technical specification for high voltage sf6 gas …

TEİAŞ-TMTDB/2020-003.0

TECHNICAL SPECIFICATION FOR HIGH VOLTAGE SF6 GAS INSULATED SWITCHGEAR

The original version of this technical specification has been prepared in Turkish and in case of any inconsistency between English and Turkish, the Turkish language shall prevail.

PREPARATION : APRIL 2020

TEAİŞ

TEİAŞ-TMTDB/2020-003.0 i Technical Specification for High

Voltage SF6 Gas Insulated Switchgear


1. COMMON FEATURES ............................................................................................ 1

1.1. Design and Construction .................................................................................. 1 1.2. Standards ......................................................................................................... 3

1.3. Operating Conditions ....................................................................................... 8 1.4. Gas System...................................................................................................... 8 1.5. SF6 Gas Losses ............................................................................................. 12 1.6. Local Control and Control (Operation) Circuit ................................................ 12 1.7. Unfulfilled Guarantees and Deviations ........................................................... 13

2. ELECTRICAL CHARACTERISTICS ..................................................................... 13 2.1. General .......................................................................................................... 13

2.2. Circuit Breakers .............................................................................................. 14

2.2.1. General .................................................................................................... 14 2.2.2. Operating Mechanism ............................................................................. 15 2.2.3. Closing and Opening (Tripping) Circuits .................................................. 15

2.2.4. Control and Auxiliary Equipment ............................................................. 16 2.2.5. Control Cabinets ...................................................................................... 16 2.2.6. Interlocks ................................................................................................. 17

2.3. Disconnectors ................................................................................................ 17 2.3.1. General .................................................................................................... 17

2.3.2. Operating Mechanism ............................................................................. 19 2.4. Earthing Switches .......................................................................................... 19

2.4.1. High Speed Earthing Switches ................................................................ 19

2.4.2. Usual Earthing Switches .......................................................................... 20 2.5. Instrument Transformers ................................................................................ 20

2.5.1. Current Transformers .............................................................................. 20 2.5.2. Voltage Transformers .............................................................................. 21

3. DESIGN AND STRUCTURAL CHARACTERISTICS ............................................ 22

3.1. Conductors and Busbars ................................................................................ 22 3.2. Insulators ....................................................................................................... 22 3.3. Expansion ...................................................................................................... 23 3.4. Connections ................................................................................................... 23

3.4.1. Cable Connections .................................................................................. 23

3.4.2. Bushing Connections ............................................................................... 24 3.5. Spare Parts .................................................................................................... 24

4. TESTS ................................................................................................................... 27 4.1. Cable Testing Facilities .................................................................................. 27 4.2. General .......................................................................................................... 27

4.3. Type Tests ..................................................................................................... 28 4.3.1. GIS Feeder Bay ....................................................................................... 28

4.3.2. Circuit Breakers ....................................................................................... 29 4.3.3. Current Transformers .............................................................................. 29 4.3.4. Voltage Transformers .............................................................................. 30 4.3.5. Disconnectors .......................................................................................... 30 4.3.6. Earthing Switches .................................................................................... 30 4.3.7. High Speed Earthing Switches ................................................................ 31

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TEİAŞ-TMTDB/2020-003.0 ii Technical Specification for High


4.4. Routine Tests ................................................................................................. 31

4.4.1. Circuit Breakers ....................................................................................... 31 4.4.2. Current Transformers .............................................................................. 32

4.4.3. Voltage Transformers .............................................................................. 32 4.4.4. Gas – Air Bushings .................................................................................. 32 4.4.5. Disconnectors, Earthing Switches and High Speed Earthimng Switches 33 4.4.6. Field Tests ............................................................................................... 33

5. MATTERS RELATED WITH THE TESTS AND ACCEPTANCE CRITERIA ........ 34

5.1. High Voltage SF6 Gas Insulated Switchgear ................................................. 34 5.1.1. Type Tests ............................................................................................... 34 5.1.2. Routine Tests .......................................................................................... 35 5.1.3. Acceptance Tests .................................................................................... 35

5.2. Acceptance Criteria ........................................................................................ 35

5.3. Acceptance Procedure ................................................................................... 36 6. SERVICE AND REPAIR WORKS ......................................................................... 37

6.1. Failure Detection ............................................................................................ 38

6.2. Failure Repair Method .................................................................................... 38 6.3. Supply of Materials Necessary for the Repair of Failure ................................ 38 6.4. Repair of Failure ............................................................................................. 40

6.5. Field Tests of Repair Works ........................................................................... 42 6.6. Failure Repair Prices ...................................................................................... 42

6.6.1. 6.6.1 The bidder shall determine and propose the repair prices of the indicated failures in this article. .......................................................................... 42 6.6.2 In case of recurrence of the failure, which required the repair work, within the warranty period, the Employer and the Contractor shall determine whether the failure is caused by the Contractor through inappropriate material and Service use. The process from such determination by the Employer and the Contractor until the result is obtained shall not impact the works and periods indicated in Article 6 in relation with the performed repair works and the Contractor shall continue the works related with repair. ................................................................................... 42 6.6.3 The decision of the Employer indicated in Article 6.7 shall be binding on both parties and in case of any dispute between the parties about such decision and/or in case of any negligence/ ignorance in relation with the repair works, the Employer shall seize the performance bond of the Contractor. ......................... 43 6.6.2. In case of failures caused by the contractor due to Inappropriate Material and Service Use, which occurred within the warranty period, the Contractor shall pay five hundred (500,-TL) Turkish Liras to the Employer against the expenses of the personnel, who the Employer will assign as observer at the stage of determination of the failure location. .................................................................. 43 6.6.3. A fine equal to two hundred (200,-TL/hour) shall be applied up to twenty four hours for each one hour delay that may occur for any reason in relation with the periods indicated in Article 6.1, Article 6.3., Article 6.4. and Article 6.5. In case such twenty – four (24) hour period is exceeded, the Employer reserves the right to continue the fine application or to seize the warranty related with the service or repair works. ...................................................................................................... 43 6.6.4. The repaired part shall be in the scope of Warranty of the Contractor for 2 (two) years after it is repaired and commissioned. ............................................ 43 6.6.5. Scope of Repair Prices ............................................................................ 43

i. EK.1 GARANTİLİ KARAKTERİSTİKLER LİSTELERİ ...................................... 45 ii. EK.2 SAPMALAR LİSTESİ ................................................................................ 82

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TEİAŞ-TMTDB/2020-003.0 1 Technical Specification for High



1. COMMON FEATURES 1.1. Design and Construction The switchgear shall be of compact design, fully metal-enclosed and of SF6 gas insulated type. The switchgear shall be constructed according to the busbar system as detailed in the single-line diagram for gas insulated transformer station attached to the Bidding Documents. In complying with the requirements of this Specification, in terms of both arrangement and detail, the design of the SF6 gas insulated system shall conform to most up to date engineering practice. Essentially the design shall be simple and reliable in order to ensure long-term continuous operation conditions with high economy and low maintenance cost. Particular attention shall be paid to internal and external access in order to facilitate inspection, cleaning and maintenance. The switchgear shall be supplied with all auxiliary equipment necessary for operation, maintenance, repair and extensions. Provision for future extensions shall be indicated on the drawings. Future extensions at both ends shall be feasible with minimum duration and disturbance to the existing system in service. In this context, in order to be able to provide future feeder extensions, the busbar details of the first and last feeders shall be given together with the approval documents. The switchgear shall be designed for continuous operation under all system operating conditions including sudden change of load and voltage and short circuits within its ratings, and under all atmospheric conditions at Site. The switchgear shall be of single phase encapsulated type for both busbars and feeders in 400 kV Systems. The switchgear shall be of single phase and/or three phase encapsulated type in 154 kV Systems. Assembly units that are tested in the factory shall be jointed in the field by using bolted and sealed flange connections only. Welding of enclosures in the site shall not be accepted. The metal enclosures shall be made of aluminum alloy. All compartments of the equipment must be grounded at the required points. The necessary grounding strips and associated fixings shall be provided to carry the short-circuit current for one second. All components of the switchgear (circuit breakers, busbars, disconnecting switches, grounding switches, instrument transformers, etc.) shall consist of metal enclosures completely covering all the live parts. The live parts shall be supported by high grade and corona resistant and non-hygroscopic insulators within the enclosure.

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The switchgear units shall consist of modular components and shall be arranged so as to require the applicable minimum space. Modular design shall include support structures, auxiliary equipment, control devices, mechanical linkage, SF6 gas and interlock wiring. Components that may be renewed, driving mechanisms, and standard assemblies that may be transferred from one circuit to another, shall be interchangeable to secure minimum time of repair, and, where required, this shall be demonstrated by the Supplier. The arrangement of the switchgear shall be in such a way that any part can be removed without interruption or disturbance to adjacent feeders or circuits and this system shall comply with the latest IEC Standard 62271-203 including Annex-F “Service Continuity”. Further, the arrangement of the GIS system shall not necessitate dismantling of voltage transformers before the commencement of high voltage AC tests on the switchgear and cable connection (provided that it is applicable even if AC test bushing connection is made on GIS feeder). The switchgear shall be constructed of enough thickness to withstand the mechanical and thermal stresses due to short-circuits. Where necessary suitable arrangements shall be provided for the thermal expansion and contraction of the busbars without application of stress to the supporting structure, and for different settlements of foundations in case of joints in the respective basement(s). Busbars and all electrical connections shall be made of approved materials, and suitable measures shall be taken to prevent corona discharge, particularly at edges and corners. The enclosure shall be designed and constructed to withstand to internal arc 500 msec for <40 kA values and 300 msec for ≥ 40 kA effective values without fragmentation, and shall also be made of material with this feature. (IEC 62271-203 Table-4) Any assembly requiring welding at the Site, either during the initial installation or during any reassembling shall be rejected. Each enclosure element shall be made of fabricated parts. All motors shall be in accordance with IEC standards. Motors shall be designed to operate 15% below and 10% above the nominal voltage without overheating. The required base frame and supporting structures shall form a part of the equipment. Any support rails or channels, which shall be connected to or embedded in the concrete floor, shall be provided and mounted by the Supplier. Adequate space and portable or fixed ladders and platforms shall be provided for easy access during inspection, operation and maintenance. The assembled equipment shall be designed in a capacity to withstand electrical, mechanical and thermal ratings of the projected system. All joints and connections shall be able to withstand the forces of expansion, vibration, contraction and projected seismic conditions without deformation, malfunction and leakage. All the steel frame and framework shall be hot-dip galvanized.

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1.2. Standards Unless otherwise specified, the design, production and testing of the Gas Insulated Equipment shall be carried out by considering the latest publications of the standards and / or documents listed below, at the bidding date.

S.N.

Standard Number Standard Name (Turkish/ English)

TSE Standard No.

International Standard No.

1 TS EN ISO 9001

EN ISO 9001 Kalite Yönetim Sistemleri - Şartlar

Quality management systems - Requirements

2 TS EN ISO 14001

EN ISO 14001

Çevre yönetim sistemi - Şartlar ve kullanım kılavuzu

Environmental Management Systems – Requirements With Guidance For Use

3

TS EN 62271-203

IEC 62271-203

Yüksek Gerilim Anahtarlama ve Kontrol Düzeni – Bölüm 203-52 kV Üzerindeki Beyan Gerilimleri için Gaz Yalıtımlı Metal Mahfazalı Anahtarlama Düzeni (Ek: F de ki servis devamlılığını kapsamaktadır.)

High-voltage switchgear and controlgear – Part 203: Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV

4

TS EN 62271-1 IEC 62271-1

Yüksek gerilim anahtarlama düzeni ve kontrol düzeni – Bölüm 1: Ortak özellikler

High-voltage switchgear and controlgear – Part 1: Common specifications

5

TS EN 62271-100

IEC 62271-100

Yüksek gerilim anahtarlama düzeni ve kontrol düzeni – Bölüm 100: Alternatif akım devre kesicileri

High-voltage switchgear and controlgear – Part 100: Alternating-current circuit-breakers

6

TS EN 62271-102

IEC 62271-102

Yüksek gerilim anahtarlama düzeni ve kontrol düzeni – Bölüm 102: Alternatif akım ayırıcıları ve topraklama anahtarları

High-voltage switchgear and controlgear – Part 102: Alternating current disconnectors and earthing switches

7 TS EN 62271-110

IEC 62271-110 Yüksek gerilim anahtar ve kontrol grubu - Bölüm 110: Endüktif yük anahtarlaması

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S.N.


TSE Standard No.


High-voltage switchgear and controlgear - Part 110: Inductive load switching

8

TS EN 60376 IEC 60376

Yeni SF6 Gazının Kabulü ve Şartnamesi Elektrikli donanımda kullanılacak teknik nitelikli kükürt hekzaflorürün (SF6 ) özellikleri

Specification of technical grade sulphur hexafluoride (SF6) and complementary gases to be used in its mixtures for use in electrical equipment

9

TS EN 60480 IEC 60480

Elektrik cihazlarındaki sülfürhekzaflorürün (SF6) kontolü ve işlenmesi ve tekrar kullanımı için muayene kılavuzu

Guidelines for the checking and treatment of sulfur hexafluoride (SF6) taken from electrical equipment and specification for its re-use

10

TS EN 60529 IEC 60529

Mahfazalar Tarafından Sağlanan Koruma Dereceleri (IP kodu)

Degrees of protection provided by enclosures (IP Code)

11 TS EN 60721 IEC 60721

Ortam Koşullarının Sınıflandırılması

Classification of environmental conditions

12

TS EN 61869-1 IEC 61869-1

Ölçü transformatörleri - Bölüm 1: Genel kurallar

Instrument transformers - Part 1: General requirements

13

TS EN 61869-2 IEC 61869-2

Ölçü transformatörleri - Bölüm 2: Akım transformatörleri için ek kurallar

Instrument transformers - Part 2: Additional requirements for current transformers

14

TS EN 61869-3 IEC 61869-3

Ölçü transformatörleri - Bölüm 3: Endüktif gerilim transformatörleri için ilave özellikler

Instrument transformers - Part 3: Additional requirements for inductive voltage transformers

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S.N.


TSE Standard No.


15

TS EN 62271-209

IEC 62271-209

Yüksek gerilim anahtarlama ve kontrol düzeni - Bölüm 209: 52kv üzerindeki beyan gerilimleri için gaz yalıtımlı metal mahfazalı anahtarlama düzeninde kablo bağlantıları - Sıvı dolgulu ve elektrüde edilmiş yalıtımlı kablolar - Sıvı dolgulu ve kuru tip kablo bağlantı düzenleri

High-voltage switchgear and controlgear - Part 209: Cable connections for gas- insulated metal-enclosed switchgear for rated voltages above 52 kV - Fluid-filled and extruded insulation cables - Fluid-filled and dry-type cable-terminations

16

TS EN 62271-211

IEC 62271-211

Yüksek gerilim anahtarlama düzeni ve kontrol düzeni - Bölüm 211: 52 kV'un üzerindeki beyan gerilimleri için güç transformatörleri ile gaz yalıtımlı metal mahfazalı anahtarlama düzenleri arasında yapılan doğrudan bağlantı

High-voltage switchgear and controlgear - Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV

17

TS EN 60099-4 IEC 60099-4

Parafudurlar - Bölüm 4: A.a. sistemler için - Atlama aralıksız metal oksit parafudurlar

Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems

18

TS EN 60137 IEC 60137

Yalıtkan geçiş izolatörleri - 1000 v’un üzerindeki alternatif gerilimler için

Insulated bushings for alternating voltages above 1 000 V

19

TS EN 50052 EN 50052

Yüksek gerilim anahtarlama düzeni ve kontrol düzeni - Gaz doldurulmuş dökme alüminyum alaşımlı mahfazalar

High-voltage switchgear and controlgear - Gas-filled cast aluminium alloy enclosures

20

TS EN 50064 EN 50064

Yüksek gerilim anahtarlama ve kontrol tabloları-Gaz doldurulmuş dövme aluminyum ve aluminyum alaşımı mahfazalar

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S.N.


TSE Standard No.


Wrouhgt aluminium and aluminium alloy enclosures for gas-filled high-voltage switchgear and controlgear

21

TS EN 50069+A1

EN 50069+A1

Yüksek gerilim anahtarlama ve kontrol tabloları-Gaz doldurulmuş-Döküm ve dövme aluminyum alaşımlarından, kaynaklı, bileşik mahfazalar

Welded composite enclosures of cast and wrought aluminium alloys for gas-filles high-voltage switchgear and controlgear

22

TS EN 50089 EN 50089

Yüksek gerilim anahtarlama ve kontrol tabloları-Metal mahfazalı-Gaz doldurulmuş-Dökme reçine bölmeler

Cast resin partitions for metal enclosed gas-filled high voltage switchgear and controlgear

23

TS EN 62155

EN 62155

Beyan gerilimleri 1000 v'tan büyük olan elektrikli cihazlarda kullanılan basınçlı ve basınçsız oyuk seramik ve cam izolatörler

Hollow pressurized and unpressurized ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1000 V

24

TS EN 60060-1

EN 60060-1

Yüksek gerilim deney teknikleri - Bölüm 1: Genel tarifler ve deney kuralları

High-voltage test techniques - Part 1: General definitions and test requirements

25 TS EN 60060-2

EN 60060-2

Yüksek gerilim deney teknikleri - Bölüm 2: Ölçme sistemleri

High-voltage test techniques - Part 2: Measuring systems

26

TS EN 60060-3 EN 60060-3

Yüksek gerilim deney teknikleri - Bölüm 3: Sahada yapılan deneylerle ilgili tarifler ve kurallar

High voltage test techniques - Part 3: Definitions and requirements for on-site tests

27

TS EN 60071-1 EN 60071-1

Yalıtım koordinasyonu- Bölüm 1: Tarifler, prensipler ve kurallar

Insulation co-ordination - Part 1: Definitions, principles and rules

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S.N.


TSE Standard No.


28 TS EN 60071-2 TS EN IEC 60071-2

EN 60071-2 EN IEC 60071-2

Yalıtım koordinasyonu - Bölüm 2: Uygulama kılavuzu

Insulation co-ordination - Part 2: Application guide

29

TS EN 60255-1 EN 60255-1

Ölçme röleleri ve koruma ekipmanı bölüm 1:Genel özellikler

Measuring relays and protection equipment -- Part 1: Common requirements

30

TS EN 60265-1 EN 60265-1

Ölçme röleleri ve koruma ekipmanı bölüm 1:Genel özellikler

Measuring relays and protection equipment -- Part 1: Common requirements

High-voltage switchgear and controlgear - Part 103: Switches for rated voltages above 1 kV up to and including 52 kV

31 TS EN 60270

EN 60270

Kablolar-Yüksek gerilim deney teknikleri-Kısmi boşalma ölçmeleri

High voltage test techniques-Partial discharge measurements

32

TS IEC 60815 IEC 60815

Kirlenme şartlarına göre izolatörlerin seçilme kuralları kılavuzu

Guide For The Selection Of İnsulators In Respect of Polluted Conditions

33

TS EN 61000 IEC 61000

Elektromanyetik Uyumluluk (EMC) - Bölüm 1-2: Genel - Elektromanyetik olaylarla ilgili ekipman da dahil olmak üzere elektrik ve elektronik sistemlerin işlevsel güvenliğinin sağlanması için metodoloji

Electromagnetic compatibility (EMC) - Part 1-2: General - Methodology for the achievement of functional safety of electrical and electronic systems including equipment with regard to electromagnetic phenomena

34

TS EN 62271-4 IEC 62271-4

Yüksek gerilim anahtarlama ve kontrol düzeni - Bölüm 4: sülfür heksaflorid (SF6) ve karışımları için prosedürler Taşıma

High-voltage switchgear and controlgear -- Part 4: Handling procedures for sulphur hexafluoride (SF6) and its mixtures

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S.N.


TSE Standard No.


35

TS EN 62271-207

IEC 62271-207

Yüksek gerilim anahtarlama düzeni ve kontrol düzeni - Bölüm 207: 52 kV üzerindeki beyan gerilimler için gaz yalıtımlı anahtarlama düzeni donanımlarının sismik nitelendirilmesi

High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-insulated switchgear assemblies for rated voltages above 52 kV

36 IEC 60364/60479/60621/IEEE Std. 80 – Standards for Station Grounding

37 CENELEC/SVDB – Pressure Tank Codes

1.3. Operating Conditions

Environmental Conditions:

- Ambient to be Used : Indoor (Internal) or Outdoor (External)

- Altitude (m) : 1000

- Ambient Temperature (ºC) :

Indoor (Internal) :

. Maximum : +40

. Minimum : -5

. 24h average : +35’in altında

Outdoor (external) :

. Maximum : +40

. Minimum : -25

. 24h average : +35’in altında

- Ambient Air Pollution (Internal) : “LIGHT” according to IEC 60815-1

- Ambient Air Pollution (External) : “HEAVY” according to IEC 60815-1

- Maximum Relative Humidity (24h average)

:

. 24h average : %95

. Monthly average : %90

- Earthquake (*)

. Horizontal acceleration : 0.5 g (5 m/s2) (at ground level)

. Vertical acceleration : 0.25 g (2.5 m/s2)

- System Grounding : Directly grounded neutral system

1.4. Gas System The switchgear units shall be divided into main feeder bays and each bay shall be divided into gas-tight and arc-resistant compartments. Thus the effect of any possible fault shall be confined in the respective compartment. This system shall comply with the latest IEC Standard 62271-203 including Annex-F “Service Continuity”.

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The compartments shall comply with the following requirements: a) prevent the migration of possible power arcs to adjacent compartments, shall be prevented with an adequate design of the barriers between compartments. b) any gas leakage shall be limited to a small part of the GIS hardware. c) maintenance and replacement of individual components shall be possible by receiving minimum amount of gas and without emptying the busbar compartments (If necessary, adjacent compartment gas could be discharged, but in this case, continuity of service shall be ensured in such a way that the working personnel cannot reach the compartment with operating gas pressure in any way.) d) maintenance and repair of any feeder bay shall be without outaging the adjacent feeder bay (it may be limited to active units). e) Buffer compartment shall be placed between busbar disconnectors to avoid shutdown of complete substations, in case of busbar disconnector maintenance and repair. f) Buffer compartment shall be available between circuit breaker and busbar disconnector, in order to keep both busbars in service in case of circuit breaker maintenance and repair. g) Bay-wise gas segregation shall be ensured in order to avoid long outages of complete busbars (buffer compartments with removable links) h)In case GIS in H busbar-scheme is requested in the single line diagram attached to the Specifications, the conditions specified in the articles d), e), f), g) shall not be required. Yet, during the maintenance and repair of the circuit breaker, buffer compartment shall be placed between the circuit breaker and busbar disconnecting switch, in order to keep the busbar in service. ı) In cases where feeder extension to GIS equipment is stipulated depending on the expansion work, gas compartment shall be established in accordance with IEC 62271-203 Annex F. Gas control in 400 kV and 154 kV single phase encapsulated GIS, must be individually performed for each compartment of three phases. The single-phase equipment below shall be located in the independent gas-tight compartments; A. Busbar B. Busbar voltage transformer C. Busbar earthing switch D. Busbar disconnecting switch E. Circuit breaker of the feeder bay F. Current transformer, disconnecting switch, earthing switch, high-speed earthing switch of the feeder bay G. Line voltage transformer H. Cable-end housing, SF6/air bushing, transformer bushing housing, İ. Gas barrier insulators shall be also installed between indoor SF6 gas compartment and outdoor bus ducts of the GIS hall in order to separate indoor and outdoor SF6 gas compartments. If the busbar compartment length is limited for each feeder bay; combined compartment of busbar and busbar disconnecting switch and/or combined compartment of busbar and busbar earthing switch is acceptable.

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Gas control in 154 kV 3 phase single encapsulated GIS equipment, must be individually performed for each compartment. The independent gas-tight compartments shall be located as follows; A. Busbar, busbar disconnecting switch and earthing switch together in a single independent gas tight compartment or busbar in an independent gas tight compartment, busbar disconnecting switch and earthing switch together in a separate gas tight compartment B. Busbar voltage transformer C. Circuit breaker of each feeder bay, D. Current transformer, high speed earthing switch, disconnecting switch of the feeder bay in one or separate gas compartments E. Line voltage transformer F. Cable-end housing with or without high-speed earthing switch, SF6/air bushing, transformer bushing housing The gas tight barriers and joints in the assembly shall have a high degree of tightness so as to prevent the gas loss within each individual gas compartment. The gas loss shall not be more than 0.5% per year. Continuous gas replenishing shall not be accepted. Each major device or section shall be accessible for monitoring and maintenance without evacuating a large volume of gas. Each SF6 gas filled compartment shall have its own SF6 gas monitoring device including density meter, so as to easily determine a faulty compartment. Gas monitoring devices shall be of temperature compensated and density meter type. The gas density indicator shall be well visible and scaled. A gas density monitoring device shall be provided in each compartment. External alarm contacts shall be provided to transmit an alarm signal to the monitoring panel. Gas monitors shall be equipped with suitable contacts (one high density contact and two low density contacts). Gas shall not be released when it is removed from the compartment it is connected to. The contacts shall be suitable to be set independently for three thresholds below: For circuit breakers - 1st low pressure threshold contact for alarm: to replenish pressure level to rated value, following tightness check - 2nd low pressure threshold contact for alarm: for urgent gas replenishment and/or preparation of operation block - 3rd low pressure threshold contact for circuit breaker blocking: locking the circuit breaker at its current position without trip For other compartments - One high pressure contact for alarm (This is not a prerequisite for the compartments with the same gas pressure)

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- 1st low pressure threshold contact for alarm: to replenish pressure level to rated value, following tightness check - 2nd low pressure threshold contact for alarm: for urgent gas replenishment and/or preparation of operation block Thresholds shall be adjusted with at least 0.02 Mpa intervals. The accuracy of the measuring instrument shall also be taken into account so that the thresholds shall not overlap. Intervention errors of contacts shall be not higher than ± 2% in the whole temperature range. All nominal performances shall be guaranteed at each alarm threshold. In the event of a fault in any compartment, the gas pressure in the compartment shall be kept within safe limits. It shall be ensured that the personnel in the control aisle are not exposed to any danger. Gas monitoring devices shall be of non-corrosive type and insensitive to the quakes caused by equipment maneuvers where they are installed. Each gas section shall also be provided with a gas connection valve for evacuating and refilling the section. In addition, the connection of manometer shall be possible for checking the gas pressure. This manometer shall be provided by the Supplier separately for each substation. The vessel surface shall be anti-corrosive and capable to prevent the penetration of water vapor. All GIS compartments shall be equipped with rupture diaphragms to prevent uncontrolled bursting and with suitable (gas) deflectors to provide protection for the operating personnel, as well. In order to achieve maximum operation reliability, it is not desirable to install internal gas relief devices, to refrain from the adverse effects on adjacent compartments. The Contractor shall inform the maximum operation design pressures of enclosures. In any case, these should not be lower than the values stipulated in the relevant CENELEC Standards. Each SF6 gas compartment shall be equipped with static filters. These shall be able to absorb any water vapor penetrating into the switchgear installation for over a period of twenty years. SF6 gas shall be completely sealed off so that no particular gas compressor set is required to be used. Gas insulated equipment with different operating gas pressures shall be partitioned. The materials which require a gas heating system shall not be used and the injection of other gasses into SF6 gas medium shall not be accepted.

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Enclosures shall be resistant to perforation, according to IEC Standard 62271-203. In order to minimize the risk of perforation in the enclosures, the internal arc duration shall be limited to 500 msec for < 40 kA values and 300 msec for ≥ 40 kA effective values; measures shall be adopted to prevent repetition of arc due to automatic reclosure. (IEC62271-203 Table-4) 1.5. SF6 Gas Losses In case that the gas losses are found higher in operation than the accepted limit value, the Contractor shall replace to the satisfaction of the TEİAŞ all the necessary equipment so as to reduce the gas losses below the guaranteed value. The annual gas leakage rate shall not be more than 0.5%. Over a 10-year period, gas leakage shall be lower than the filling pressure difference and the 1st alarm threshold pressure. The Contractor shall replenish all gas losses that may occur during the maintenance free period of at least five years. 1.6. Local Control and Control (Operation) Circuit A local control cabinet (LCC) shall be supplied fort he local control and operation of each circuit breaker compartment. The local control cabinets shall contain the local control, interlocking, operation and indicator devices fort he associated GIS feeder bay. The local control cabinets shall be of separate, free-standing type and installed on the building floor or foundation and located across (adjacent in compulsory situations provided that it is approved by the administration) the related GIS feeder bay. The local control cabinets shall be across the related circuit breaker and can be located at the building wall or directly in front of the related circuit breaker in the switchgear providing sufficient space for access to the equipment and work at the equipment even if the local control cabinet doors are open. A general arrangement drawing showing the installation positions of the equipment related to the GIS shall be submitted. The final installation position shall be approved by the user. The local control cabinets with IP41 protection class shall be installed indoors. The control and operation circuits shall be well shielded and safety measures shall be taken to protect the operator from touching energized parts. The control circuits shall withstand 2 kV voltage with power frequency for 1 minute. Required Features for Conventional Local Control Cabinets; The local control cabinets shall be provided with the following features: a) A mimic diagram showing the single line diagram including gas compartments, on/off switches for the High Voltage devices, position indicators and local / off / remote switches shall be located adjacent to the various symbols of the mimic diagram. The following devices shall be supplied in minimum: (to be checked and cancelled according to secondary)

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Circuit breaker control switch with opposite positions Circuit breaker "Local-Remote" selector switch Disconnecting control switch with opposite positions Grounding control switch with opposite positions Mimic busbar including the symbols according to the single line diagram. Annunciator (failure warning) panel b) Interposing relays and control switches for the circuit breakers, disconnect switches, earthing switches etc. c) The specified alarm and indicator devices d) Miniature disconnecting switch/automat and contacts. These shall be installed inside the local control cabinets. e) Terminal blocks for terminating and aligning/marshaling the auxiliary supply, control, interlocking, signalization and alarm circuits from the GIS and for cable connections to the remote control panels or the control system of TEİAŞ. f) Local control cabinets shall be furnished with a thermostat and hygrostat heater to prevent the internal equipment from humidity residue. The rated voltage of the heater shall be 230 VAC and the heater shall be fed through a two pole fused protected switch. The local control cabinets shall be equipped with a fluorescent lamp and a duplex socket rated 230 VAC, 15 A with ground fault interrupter. 1.7. Unfulfilled Guarantees and Deviations It is essential to meet the matters specified in the Technical Specifications and the values given in the List of Guaranteed Characteristics. If these are not fulfilled, the bidder shall clearly indicate the deviations in the list in ANNEX-III. The List of Deviations, to be filled in by the tenderer, shall be evaluated by the Administration in terms of compliance with the essence of the Technical Specifications and the relevant standards. At the stage of Bid / Approval evaluation, the Administration reserves the right to reject or accept the bids containing technical deviations. If nothing is specified in the List of Deviations, the high voltage SF6 gas insulated switchgear is considered to be fully compliant with the Technical Specifications. 2. ELECTRICAL CHARACTERISTICS 2.1. General

Rated System Voltage : 400 kV 154 kV

Maximum Rated System Voltage : 420 kV 170 kV

Basic Impulse Level (phase-ground) : 1425 kV 750 kV

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Switching Impulse Level : 1050 kV ……

Power Frequency Withstand Voltage : 650 kV effective 325 kV effective

Rated Current

For busbars : 4000 A 3150 A

For coupling : 4000 A 3150 A

For feeders : As Specified in Single Line Diagram

Rated Short Circuit Withstand Current (1 sec)

: 63 kA 50 kA

Rated Peak Withstand Current : 157,5 kA 125 kA

Idle Cable and Line Rated Breaking Current

: 400 A 160 A

2.2. Circuit Breakers 2.2.1. General The three-phase SF6 gas circuit breakers shall be of self-blast type principle and consist of one or two interrupting arcing chambers for 400 kV and one interrupting arcing chamber for 154 kV. The arc chambers and contacts shall be designed to enable easy access and visual inspection. Restrike-free switching (class C2 for capacitive current switching, with 1.4 voltage factor according to IEC 62271-100) shall be guaranteed for the conditions specified in the List of Guaranteed Characteristics. The arc interruption performance shall be consistent over the entire operating range, from the line/cable charging currents to the full short circuit currents. On-Off indicators and spring set indicators shall be seen easily on the circuit breaker. Circuit breaker tanks shall be equipped with over-pressure relief equipment, filters and gas monitoring device. Suitable filtering arrangements shall be provided in order to absorb decomposition products produced during the arc interruption process. Gas in circuit breaker tank shall not mix with the gas in adjacent modules. Circuit breakers shall be equipped with operation counters. Circuit breakers shall be equipped with lock-out circuits to prevent the operation of the circuit breaker whenever gas pressure, air pressure or hydraulic pressure is less than the set values required for satisfactory operation of the circuit breaker, or in case of any irregular operation risk. In order to reduce the space required by the GIS hardware and facilitate the maintenance works, the circuit breakers with horizontal configuration shall be preferred (but not mandatory). The circuit breaker shall be capable of breaking all currents from zero current up to the maximum fault current stipulated by TEİAŞ.

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Tripping -1 and Tripping-2 circuits of all 154 kV and 400 kV circuit breakers shall be checked and alarm signal shall be taken when there is a disconnection at the tripping circuit. This “trip circuit supervision” procedure shall be carried out by a separate relay. The performance of trip circuit supervision procedure over distance protection, Over Current or Differential protection relays shall be accepted provided that any additional material like diode, resistance etc. is not used. Tripping and closing commands in all 154 kV and 400 kV circuit breakers, shall be transmitted through the remote / close / disabled switch on the circuit breaker. When the circuit breaker is set to "Close" or "Disabled" position, an audible and light signal shall be received in the control room. When this switch is in the close position, remote opening from the control building shall be canceled, but it shall be possible to open with protection relays. In the "Remote" position it shall be possible to open the protection relays and the control building. In the "Disabled" position, it shall not be possible to remotely turn on both the protection relays and the control building. 2.2.2. Operating Mechanism The operating mechanism of the circuit breakers shall be of spring type and

For 400 kV; single-ğhase except power transformer (400/33kV) and coupling feeder (independent operating mechanisms for each pole) appropriate for auto-reclosing type

For 154 kV; single-phase for line, cable and reactor feeders (independent operating mechanisms for each pole) appropriate for auto-reclosing type.

The operating mechanism shall be designed according to duty cycles specified below and in a way that tripping/closing contacts of all three poles shall be tripped and closed simultaneously. The rated operating duty cycle shall be as follows: O-t1-CO-t2-CO: where minimum duration for t1 and t2 are 0.3 second and 1 minute, respectively. The circuit breaker mechanisms shall be equipped with an anti-pumping relay that shall prevent the circuit breaker from tripping/closing continuously as long as the closing circuit is energized – in case the circuit breaker fails to be latched in the closed position or if circuit breaker is tripped again due to the operation of the protective relays. Operating mechanisms shall store sufficient energy for completing at least one Open-Close-Open without auxiliary power supply. 2.2.3. Closing and Opening (Tripping) Circuits The circuit breakers shall be equipped with 110 V DC shunt closing and tripping coils. Two trip coils shall be available for each trip mechanism of the circuit breakers. The trip coils shall be physically separated and electrically and magnetically independent,

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and shall be energized simultaneously, and arranged in such a way that the failure of any coil shall not jeopardize the operation of the other coil. The tripping and closing circuits shall be supplied from 110 VDC voltage. The tripping circuits shall operate correctly at the voltages between 70% and 110% of the rated supply voltage. The closing circuit shall operate correctly at the voltages between 85% and 110% of the rated supply voltage. The total power consumption of the circuit breaker shall be minimized at nominal control voltage during tripping and closing. The circuit breaker shall close correctly when an electrical closing impulse is applied to the closing coil for 50 msec. The maximum current interrupting time of the circuit breaker shall be 50 msec. 2.2.4. Control and Auxiliary Equipment All circuit breakers shall be equipped with a selector switch with Off/Local/Remote positions which is locked in the "Off” position. At least 6 open and 6 closed auxiliary contacts shall be available in addition to those used in the control circuits of the circuit breaker. All the auxiliary switches and circuits shall be capable of carrying at least 6 A DC current without exceeding the permissible temperature rise specified in IEC Publication No. 62271-100. Auxiliary switches shall be capable of breaking the current of the circuits to be controlled. 2.2.5. Control Cabinets Control cabinets shall be made of at least 2 mm thick steel sheet and a rigid structure and include any supporting steel work necessary for mounting it on a suitable place close to circuit breaker. The control cabinets shall comply with IP44 (IEC 60529) protection requirements. A suitable illumination lamp shall be placed inside of the control cabinet which is controlled by a micro-switch actuated by the door movement. Control cabinets shall be adequately ventilated to restrict condensation. An anti-condensator heater supplied by 220 VAC with enough capacity, continuously in service or controlled by a thermostat, hygrostat and a single pole switch mounted inside the cabinet, shall be provided. Sufficient amount of fire resistant terminal blocks made of non-flammable material and suitable for at least 6 mm2 cross-sectioned cable connection shall be provided. All out-going connections shall be made on terminal blocks. The connections of each three poles of the circuit breaker shall be made to the main control cabinet. The cable connections between the circuit breaker and other equipment shall be made on the terminals in the main control cabinet. 10% spare

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terminals shall be provided for future use. The control cabinets shall be equipped with sufficient number of cable entry holes furnished with cable glands and plastic plugs. Terminal blocks shall be mounted on spring retained metal rails, Rails shall be earthed. A removable and inerasable marking strip shall be available on each terminal block. Sequence of terminals shall be approved by TEİAŞ. An approved diagram and mounting instructions and relevant drawings of the local control system and the electrical circuit of the circuit breaker, identifying the various components in the cabinet and on the circuit breaker shall be affixed on the cabinet door accessed from inside. The diagrams shall be drawn on durable non-fading material suitable for the stipulated climatic conditions. All the electrical connections provided outside the circuit breaker shall be properly protected against mechanical stresses, dust etc. In case of providing 10% spare plug, the use of plugs that are used in special heavy conditions shall be allowed for the control cable connections between the close control panel and the GIS feeder. 2.2.6. Interlocks In case of faults in where the circuit breaker can no longer be operated safely (low SF6 pressure, etc.): All feeder circuit breakers shall be locked in their respective positions (remain in their positions regardless of being in open or close position).

In case the 400 kV bank/autotransformer/power transformer/line/cable feeder circuit breaker is at low SF6 gas pressure, the relevant 400 kV opposite station circuit breaker, 154 kV bank/autotransformer and 33kV power transformer circuit breakers must be triggered.

In case the 154 kV bank/autotransformer/power transformer /line/cable feeder circuit breaker is at low SF6 gas pressure, the relevant 154 kV opposite station circuit breaker, 400 kV bank/autotransformer and 33kV power transformer circuit breakers must be triggered.

2.3. Disconnectors 2.3.1. General Cable/line and busbar disconnectors shall be provided as indicated in the single-line diagrams. In this context; these disconnectors, should be practically switched under zero current conditions and therefore they shall have no-load breaking features. The disconnectors shall be locked in such a way as to prevent alteration of the switch position during short-circuit conditions and due to earthquake, mechanical stresses, etc. Fluttering of the contacts shall not be allowed. Electrical and mechanical interlocks shall be provided to prevent wrong maneuver i.e. opening the disconnector under load, closing the earthing switch on an energized circuit (see Section 3.6.).

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Disconnectors shall be motor operated. The driving energy shall be provided by the 110 V DC supply. In the event of a DC supply failure, emergency situation manual operating possibility shall be available. Emergency situation manual operation and switched locking shall be possible in open position. Auxiliary switches shall be supplied for electrical interlocking circuits, and the position indication for the remote and local main contacts shall be provided., The main contacts shall ensure mechanical rigidity and overcompression, have uniform contacts, self-cleaning feature and shall be silver plated. Furthermore, they shall be designed and manufactured to withstand the short-time current for one second without being damaged. Disconnectors shall be capable of breaking and closing the capacitive current and the closed loop currents within the switchgear. According to IEC 62271-1, Article 5.12 and IEC 62271-102 Annex A, a position indicator shall be provided to see the position of each movable contact of each disconnector. Likewise, it shall be equipped so as to obtain position information from each movable contact to be used in electrical locking circuits. On-Off indicators shall be easily seen on the disconnector . The following equipment shall be available in the switchgear control cabinet: ON/OFF change-over switches locked at “ON” position (open contacts) Local open and close buttons Local/remote position selector switch Auxiliary contacts of 6 A capacity Miniature circuit breaker for power supply Terminals for remote control Operation counters The disconnectors shall be operated from the local control cabinets, and from control panels in the transformer station control room. Necessary terminals cabled on the relevant control panel in the control room shall be provided for future remote control. The manufacturers of 400 kV GIS and 400 /154kV, 250 MVA autotransformers and 400/34.5kV, 125 MVA power transformers shall jointly check that the maneuvering of SF6 insulated disconnectors does not cause harmful overvoltages inside the windings of autotransformer and transformer. Reference is made here to efficiently limiting the possible high-frequency switching overvoltages by the surge arresters connected to transformer terminals. Should any risk be evidenced for the specific application, the countermeasures shall be jointly proposed by the GIS and power transformer manufacturers to TEİAŞ. Manual operation shall be prevented by using padlock system. The contractor may proposed to establish 170 kV disconnectors and earthing switches as a single motor drive mechanism.

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2.3.2. Operating Mechanism The disconnectors shall be furnished complete with a group-operated motor mechanism proper for three-pole operation, and with any other equipment required for smooth, well controlled, and efficient operation. Motor-operated mechanism shall consist of motor, gears, contactors, auxiliary and limit switches, and all other equipment required for normal operation of the disconnectors. The general maintenance works shall be reduced to a minimum. The motor shall be reversible, have high starting /operating torque and shall be of ball housing/bearing type. All contactors, miniature circuit breaker (mcb), auxiliary relays, motors, switches, and relevant control equipment shall be suitable for operating at 110 VDC voltage. It shall be possible to manually operate the disconnector, and locking the selector switch in either the manual or motor-operation position. Mechanical and electrical interlocks shall be provided to prevent electrical operation of the disconnector at manually operation position. Miniature circuit breakers, contactors, motor overload protection, terminal blocks, and other equipment necessary to complete the control scheme shall be mounted inside the control cabinets of the disconnector. The structure of the local control cabinet shall be the same as the circuit breaker control cabinet (Section 2.2.5). Operating mechanism shall be furnished with an auxiliary switch at 110 VDC rated voltage equipped with remote control, interlocking and necessary contacts for other circuits. Furthermore, 6 On and 6 Off auxiliary contacts shall be available and necessary facilities shall be provided for the contact adjustment. 2.4. Earthing Switches 2.4.1. High Speed Earthing Switches High speed earthing switches shall be provided as indicated on the single-line diagram. Furthermore they shall be constructed to withstand the short-circuit conditions. If accidentally switched on to a live counterpart, they shall have fault-make attributes and two closing operation capability (E1 class) on short-circuit. Taking back into service shall be possible immediately after the first closing operation only; but, as soon as it is allowed to be taken into service, its control shall be possible. The main contacts shall withstand the rated short circuit current of the switchgear for 1 second without burning, welding or being damaged. The disconnecting switches shall be of a type operating with stored energy on a spring arrangement. The driving mechanism shall be energized by 110 V DC supply. In the event of a supply failure, emergency situation manual operating shall be possible. Earthing switches may be operated both from the local control cabinet and from the control panel in the transformer station control room.

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High speed earthing switches shall meet the general requirements of this type of switches and conform to the latest revision of the relevant IEC standards (also Class B requirements for induced capacitive and inductive current switching). High speed earthing switches shall be provided with electrical interlocking circuits to prevent high speed earthing switches from closing on an energized busbar section. They shall have a mechanical switch indicator with auxiliary contacts for local and remote indication. Emergency situation manual operation shall be possible. According to IEC 62271-1, Article 5.12 and IEC 62271-102 Annex A, a suitable position indicator OFF (red)/ ON (green) shall be provided for visual check. On-Off indicators shall be easily seen on the earthing switch. The following equipment shall be available at the switchgear or in the local control cabinet:

- OFF/ON change-over switches locked at “OFF” position (closed contacts) - Local open and close control buttons - Auxiliary contacts of 6 ampere capacity - Miniature circuit breakers for power supply of control circuits - Terminals for remote control.

2.4.2. Usual Earthing Switches Usual earthing switches shall be of three poled, group operated and provided with no-load break, one motor operated mechanism per three-pole. Furthermore, emergency situation manual operation shall be possible and the necessary operating handles or hand cranks shall be supplied for this purpose. Earthing switches shall be provided with electrical interlocking circuits to prevent the earthing switch from closing on an energized busbar section. Usual earthing switches shall be placed on both sides of circuit breakers and at both ends of busbars, as shown in the single line diagrams. The switch contacts shall withstand the rated short circuit current of the switchgear for 1 second without any damage. The other characteristics shall be similar to those of the high-speed earthing switches. 2.5. Instrument Transformers Loads of instrument transformers may be increased or decreased by the Contractor with the approval of the TEİAŞ after the Contract. 2.5.1. Current Transformers

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Current transformers shall be of the ring type core design and may be located either inside or outside of the enclosures. For external type current transformers necessary precautions shall be taken to protect the transformer from external effects. The main busbar conductor shall act as the primary winding. For external type current transformers, the ends of secondary windings shall be brought into the terminal box through gastight bushings. The continuous thermal rated current of the current transformers shall be 1.2 ln and the short time primary rating values shall not be less than that of the relevant switchgear. The minimum rated output power of the transformers shall be decided by the Contractor for each of the protective and measuring circuits. Secondary windings of current transformers shall be grounded at one point only. The accuracy class of current transformers shall be 0.5 for instrument circuits and 3 (5P) for protection circuits. The current transformer saturation factor shall be n ≤ 5 for instrument circuits and shall be n ≥ 20 for protection circuits. The magnetizing curve for each current transformer protection core shall be submitted for approval. Stability calculations in fault currents passing over the external faults showing the accuracy of the selected current transformer core shall be submitted after signing the contract. Furthermore the rated primary current, turns ratio, knee-point e.m.f. and resistance of the secondary windings (corrected to the maximum service temperature) shall be submitted. A label indicating the manufacturer, type, ratio, class, output power, insulation level, and serial number of the current transformer shall be affixed on the terminal boxes of all current transformers. If current transformers with multiple threshold secondary terminals are used, the terminal connection required for each ratio shall be specified on the label and they shall be clearly indicated in the appropriate diagrams and drawings. Within the framework of the provisions of the Measurement and Measuring Instruments Type Approval Regulation published in the Official Gazette dated 17/10/2008 and numbered 27027, the current transformers shall have Type approval certificate to be obtained from the Republic of Turkey Ministry of Industry and Commerce. 2.5.2. Voltage Transformers Voltage transformers shall be of SF6 insulated and inductive type. They shall be provided with three secondary windings and the rated secondary voltage, minimum output power and accuracy class of these windings shall be as given in the table below.

First Secondary Winding

Second Secondary Winding

Third Secondary Winding

Rated Secondary Voltage (V)

100/√3 100/√3

Load (VA) It shall be decided by the Contractor.

Accuracy Class 0.5 3P

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Voltage transformers shall be continuously withstand %120 of the rated primary voltage. Secondary windings shall be protected with miniature circuit breakers and auxiliary contacts. A label indicating the manufacturer, rated values, type, class, output power, insulation level, ratio and serial number of the voltage transformer shall be affixed on the terminal boxes of all voltage transformers. Within the framework of the provisions of the Measurement and Measuring Instruments Type Approval Regulation published in the Official Gazette dated 17/10/2008 and numbered 27027, the voltage transformers shall have Type approval certificate to be obtained from the Republic of Turkey Ministry of Industry and Commerce. 3. DESIGN AND STRUCTURAL CHARACTERISTICS 3.1. Conductors and Busbars Only single phase SF6 insulated busbar ducts are acceptable for 400 kV GIS. Busbars shall have expansion joints to allow thermal expansion of busbar enclosures, where necessary. Busbar systems shall be constructed with modular sub-assemblies whose length corresponds to the feeder bay spacing of the switchgear. The busbar section shall be segregated from the relevant feeder bays by gas tight barriers to enable the separation of gas-tight compartments from each other. Busbars shall be able to carry the continuous current and shall be mechanically braced to withstand the asymmetrical current. The busbar selector disconnectors shall be accommodated in separate compartments, so that any failure in one of the disconnector compartments shall not result in making both busbars out of service. Busbars shall be made with copper or aluminum. In any case, the contact surfaces shall be made of silver plated copper. Expandable elastic contacts shall also be made of silver plated copper. Permitted maximum busbar temperature depends on the class of support insulators used. Accessible parts, i.e. enclosures, may undergo overtemperatures not exceeding 30°C above the ambient temperature. The thickness of any busbar component shall not be less than 5mm. Busbar enclosures and insulating barriers shall comply with the values specified in CENELEC Standards for vessels operating under pressure. 3.2. Insulators Insulators shall ensure for all the energized parts a proper mechanical withstand under all the conditions that are met during transport and service. They shall sustain the

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permanent or casual voltages which the equipment may be exposed to during its expected life. These insulators shall be made of synthetic insulating material ensuring optimum mechanical and electrical performances. Insulators shall not be effected from SF6 decomposition products generated by the electrical arcs. Their shape shall be specially and carefully selected such that the potential difference to the adjacent metallic parts externally or in any point inside or outside the insulation material is minimum. The mere use of fins to increase the surface creepage distances shall not be considered as sufficient. Some of these insulators shall also act as barriers between two gas tight compartments. In this case, seals shall be located between the enclosures and junction points. If any compartment is opened for a period not exceeding the maximum time required for reconditioning, the gas-tightness of the unit shall be provided so that this compartment does not cause any pressure drop in the adjacent compartments. The mechanical strength must be sufficient to ensure the space requirements of the conductor and clearances between the conductors when short circuit faults occur. The sealing of the insulators, and the enclosure wall which are also used as gas-tight barriers, shall be designed according to the maximum possible pressure difference between the barriers, in other words to withstand the maximum operating pressure on one side and the vacuum on the other. The insulators shall withstand a pressure at least three times the maximum operating pressure. In addition, the gas tightness shall be sufficient to have no measurable effect on the vacuum operation to be performed in the adjacent compartments. These barrier insulators shall be designed so as to withstand the electrical arc generated by an internal fault in the compartment without any rupture. 3.3. Expansion The relative thermal expansions between the conductors and the enclosure shall be absorbed by a sliding contact assembly fitted on the conductor. The relative thermal expansion between the conductors and the enclosure shall be absorbed by means of flexible elements (bellows) when necessary, which ensure the same gas tight characteristics as other enclosures. The conductor shall be provided at the corresponding bellows positioned with a contact assembly balancing the deformations of the flexible element. The transmission of current through the enclosures shall be guaranteed at the bellows. 3.4. Connections 3.4.1. Cable Connections

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Cable connection to the GIS switchgear shall be through metal enclosed SF6 cable end housing. The voltage grading around the cable shall be established by a stress cone which forms a solid and rigid unit together with the cable. The XLPE cable (between the substations) and its accessories (i.e. connectors, stress cones, corona and ground shields etc.) shall be provided by TEİAŞ. The Contractor shall get in touch with the XLPE cable manufacturer which shall be informed by TEİAŞ after the contract. Hence, the Contractor shall be fully responsible for any failures that might occur due to cable end compartment. Cable terminations shall be arranged for bottom entry. The interface point between the cable and switchgear shall be sealed. Furthermore, the Contractor shall provide any expansion bellows necessary against the forces created during normal and abnormal operating conditions. The design of the cable end box shall fully comply with the IEC 62271-209 standard. All cable end modules shall be suitable for single core, XLPE solid dielectric cable connection. The cable end unit design shall enable for high voltage AC testing of the connected power cable on site. 3.4.2. Bushing Connections Air-SF6 bushings with high current capacity (porcelain with all surfaces free from imperfections or composite (silicone rubber) insulators), shall be provided for the connection of conventional external conductors to the outdoor type SF6 insulated metal-enclosed switchgear and line & transformer feeder. Bushings shall meet the requirements of the relevant IEC requirements. All bushings shall have an impulse and power frequency withstand level that is above or equal to the specified level. The surface creepage distance of outdoor bushings shall not be less than 25 mm/kV (phase-to-phase) at rated voltage. Bushings shall be able to withstand the stipulated short-circuit and earthquake conditions. Tests on bushings shall be carried out in accordance with the relevant IEC Standards. Outdoor type bushings shall meet the minimum load bearing capacity values given in IEC 60137 Standard Table-1. 3.5. Spare Parts Among the spare parts listed below, the items included in the Offered Unit Price Table shall be provided;

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1. Complete Set of Breaker Pole for Circuit Breaker (Spare Parts for 400 kV and/or

154 kV) Supply (For 3 phase independent enclosure types; it shall be supplied with 1 phase enclosure. For 3 phase single housing types; it shall be supplied with 3 phase enclosure.)

2. Operating Mechanism for Circuit Breaker (for 400 kV and/or 154 kV, 1 of each type – Spare Part)

3. Trip & Closing Coils Set for Circuit Breaker ((for each 400 kV and/or 154 kV, 2 sets of Trip & Closing Coil) - Spare Part)

4. “**” Motor for Disconnector (for 400 kV and/or 154 kV – Spare Parts) 5. “**”Motor for Earthing Switch (for 400 kV and/or 154 kV - Spare Part) 6. “**”Motor for High Speed Earthing Switch (for 400 kV and/or 154 kV - Spare

Part) 7. “**”Complete set of disconnector without enclosure (for 400 kV and/or 154 kV -

Spare Part) 8. “**”Complete set of earthing switch without enclosure (400 kV and/or 154 kV -

Spare Part) 9. “**”Complete set of high speed earthing switch without enclosure (400 kV and/or

154 kV, 3 Phase - Spare Part) 10. Voltage Transformer (with enclosure, 400 kV and/or 154 kV, 1 Phase - Spare

Part) 11. “**”Current Transformer (1 Phase, for each 400 kV and/or 154 kV Type, without

enclosure, core - Spare Part) 12. “**”SF6 Gas Density Meter (3 for each pressure value - 400 kV and/or 154 kV

Spare Part) 13. SF6 Gas Bottle (40 Lt- Spare Part) 14. “*” SF6 Gas filling and deflating equipment with compressor, storage tank,

indicators, vacuum pump and filters (including dry and gas filters) (SF6 Gas Filling Car with All Accessories) Compressor; transmission speed: [5-15 m³ / s (at 50 Hz)] Suction pump gas [15-30 m³ / s (at 50 Hz); final vacuum <1 mbar) Vacuum pump (40 - 60 m³ / s [at 50 Hz]; final vacuum <1 mbar) Operation and display of process parameters with at least 10" multi-touch panel with protective cover Evaporator Dry filter (water absorption capacity: -36°C at dew point 175 g) Particle filter at least 2 µm Storage connection hose DN8 at least 4 m long, connection end DN20 Gas connection hose 3 pieces at least 5 m Digital scale for SF6 tube Gas tank with scale of minimum 160 kg weight. (It is required on the device. If offered externally, the supply, weighing and carrying equipment shall be provided separately.)

15. Gas Bottle Heater with Thermostat for Emptying SF6 Gas Bottles Quickly (Spare Part)

16. Portable and Handy SF6 Gas Detection Device (Radioactive Digital Type Ensuring Necessary Measurements with All Accessories - Spare Part)

17. “**”3 sets of post insolators of each type- Spare Part 18. One outdoor (external) bushing of each type – Spare Part

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19. Supply of Test Bushing with All Accessories (Tool and Hardware) for 154 kV / 400 kV GIS Equipment

20. Complete cable connection box for one GIS of each type (with cable connection contact set external enclosure)

21. Supply of Rotating Handle with All Accessories for 154kV and 400 kV GIS Equipment (For Disconnecting Switch, Earthing Switch and Circuit Breaker) (Manual maneuvering and setting handle) (Tool and Hardware)

22. Supply of tool bags with at least 6 drawers for 154 kV and 400 kV GIS Equipment (Including the materials such as double end wrench set, box wrench set, combined wrench set, allen wrench set, pliers, side cutter, hammer, adz, socket set, torque wrench (at torque values suitable for GIS), pincer, pliers, magnetic drill, cordless screwdriver set, caliper, steel tape measure, forged steel clamp, adjustable wrench, voltage tester, snip, terminal type screwdriver, fillister head and flathead screwdriver set etc.)

23. “**”2 pressure valves of each type 24. “**”50 dryers 25. “**”10 gaskets of each type (o-ring) 26. “**”5 degassing and filling valves 27. Supply of Multi SF6 Gas Analyzer Device (Multi gas analyzer is a fully automatic

zero emission compact device designed to control and monitor the humidity (dew point), SO2 and purity of the gas used in high voltage switchgear equipment.

- The measured gas should be stored in an internal storage container and may be pumped back into the gas chamber (up to 10 bar pe).

- For measurements on high pressure tubes, tanks or gas compartments (max inlet pressure 35 bar pe), it should be connected directly without requiring pressure reducers. In this case, if the measurement gas shall not be pumped back to equipment provided with SF6, it must have an outlet directly connectable to the tube. There should be no need to separate the device from the higher-pressure gas chamber, tank or tube.

- The precise and accurate results for subsequent measurements shall be guaranteed by cleaning the measuring tube before each measurement.

- SF6 humidity should be measured at operating pressure and dew point should be calculated at atmospheric pressure.

- Humidity and purity measurements should be shown automatically in terms of ppmv and ppmw.

- Each type of sensor shall be delivered with 1 spare device. - There should be no gas emissions into the atmosphere during the measurement

process. - Must operate with or without battery (external power supply) and guarantee high

measurement accuracy when operating on battery. Batteries should be replaceable.

- Easy and user friendly menu should be used with high quality at least 5" capacitive color touch screen and change between measurement units should be easy.

- It shall have an internal memory to store at least 300 measurement results and these records shall be transferrable to USB.

- It should be carried with a compact and hard protected bag.

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- The device shall be delivered together with sealed DN8 and DN20 coupling, 2 sealed stainless steel armored connection hoses of at least 6 m length, power cable, USB memory and user manual in Turkish.

- There must be an authorized distributor of the device in Turkey. - The features of the sensors used are given in the table below.

Sensor Features

Purity Humidity SO2

Measuring Range 0-100 vol-% -60 - +20 °C 0 – 100 ppmv

Measuring Accuracy ±0,5 vol-% ±2 °C ±2%

Note-1: The prices of these spare parts above shall be indicated separately. The price of SF6 Gas Filling and Deflating equipment marked with "*” above shall be specified together with the information indicating the name of Manufacturer and type designation. Note-2: The spare parts marked with “**” shall be transported to the site as vacuumed.

The spare parts above shall be submitted to TEİAŞ on the site one month before 2T date.

The Contractor shall submit the assembly and disassembly catalog to the employer for approval together with the documents. 4. TESTS 4.1. Cable Testing Facilities The cable-end housing shall be designed as to enable HV AC testing of the connected power cable at a voltage of √3 x Uo kV for 1 hour. The manufacturer shall explain the proposed test method. Power frequency and switching impact test voltages shall be applied to the switchgear and the power cable, when the chamber is filled to the minimum rated operating SF6 gas density or pressure. 4.2. General The equipment specified in this Section are subject to three type of tests. The tests in these there categories have different purposes:

Type tests to check the design,

Routine tests and verifications to check the manufacture and the subassembly,

Tests and controls after assembly at the Site. The metal-enclosed switchgear and the circuit breakers, disconnecting switches, earthing switches and devices forming the switchgear and the instrument transformers shall be tested in accordance with the requirements of the IEC Publications listed in Article 1.2 and CENELEC Standards.

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Unless otherwise specified, the design, production and testing of the Gas Insulated Equipment shall be performed taking into account the latest publications of the relevant IEC standards and / or documents. Even if not mentioned below, if necessary, other tests shall also be carried out to verify the operation and performance of the equipment. 4.3. Type Tests If the appropriate type test reports are not submitted, the Type tests shall be performed on the first unit of each type of component to be manufactured within the scope of this order. Regarding the type tests for switchgear;

- Short-time withstand current and peak withstand current tests (IEC 62271-203 Article 6.6)

- Verification of making and breaking capacities (for circuit breakers and high speed earthing switches) (IEC 62271-203 Article 6.101)

- Tests under conditions of arcing due to an internal fault (IEC 62271-203 Article 6.105)

The reports of those type tests that are not issued by one of the STL member laboratories shall be rejected; the repetition of these rejected tests shall be performed in a STL member laboratory and certification shall be required. The type tests to be performed are specified below: 4.3.1. GIS Feeder Bay

a) Dielectric tests (IEC 62271-203 Clause 6.2) - Lightning impulse voltage withstand tests, - Power frequency voltage withstand tests, - Voltage withstand tests in external bushings, - Switching impulse withstand voltage (for 400 kV), - Partial discharge test.

b) Radio interference voltage (r.i.v.) test (IEC 62271-203 Clause 6.3) c) Measurement of the resistance of circuits (IEC 62271-203 Clause 6.4) d) Temperature rise tests (IEC 62271-203 Clause 6.5) e) Short-time withstand current and peak withstand current tests (IEC 62271-203

Clause 6.6) f) Verification of the protection (IEC 62271-203 Clause 6.7) g) Tightness tests (IEC 62271-203 Clause 6.8) h) Electromagnetic compatibility tests (EMC) (IEC 62271-203 Clause 6.9) i) Additional tests on auxiliary and control circuits (IEC 62271-203 Clause 6.10) j) Verification of making and breaking capacities (for disconnectors and high

speed earthing switches) (IEC 62271-203 Clause 6.101) k) The disconnecting switch, normal and high-speed earthing switches of the gas-

insulated switchgear shall be subjected to a mechanical endurance test of 5000

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operation sequences, each of which is C-t-O, unless previously tested separately. (Mechanical and environmental tests) (IEC 62271-203 Clause 6.102)

l) 400 kV breakers, 10000 (5000 for 154 kV disconnecting switches) operation sequence, each of which is C-t-O, shall be subjected to mechanical endurance test. (Mechanical and environmental tests) (IEC 62271-203 Clause 6.102)

m) Proof tests for enclosures (IEC 62271-203 Clause 6.103) n) Pressure test on partitions (IEC 62271-203 Clause 6.104) o) Test under conditions of arcing due to an internal fault (IEC 62271-203 Clause

6.105) p) Insulator tests (IEC 62271-203 Clause 6.106) q) Seismic qualification of GIS equipment (IEC 62271-207 or IEEE 693)

4.3.2. Circuit Breakers

a) Dielectric tests (IEC 62271-100 Clause 6.2) b) Temperature-rise tests (IEC 62271-100 & 6.5) c) Short-time Withstand Current and Peak Withstand Current Tests (IEC 62271-

100 Clause 6.6) d) Mechanical and Environmental Tests (IEC 62271-100 Clause 6.101) Extended

Mechanical Endurance Tests on M2 Class Circuit-Breakers for Special Service Requirements (IEC 62271-100 Article 6.101.2.4) (The mechanical test shall consist of 7000 (3500 at 154 kV) operating sequences, each of which is C-t-O, at rated control voltage; 1000 (500 at 154 kV) operating sequences, each of which is C-t-O, at minimum and maximum control voltage and 1000 (500 at 154 kV) operating sequences, each of which is 0-0.3s-CO-1 min-CO, at rated control voltage of circuit breaker [in total 10000 (5000 at 154 kV)] operating sequences. The time interval t is the necessary duration between successive operations to restore the initial condition and/or to prevent undue heating of the parts of the circuit breaker.)

e) Short-circuit Current Making and Breaking Tests (IEC 62271-100 Clause 6.102-6.106)

f) Critical Current Tests (IEC 62271-100 Clause 6.107) (It shall be applied on the circuit breakers with critical current.)

g) Single-Phase and Double-Earth Fault Tests (IEC 62271-100 Clause 6.108) h) Out-of-phase Making and Breaking Tests (IEC 62271-100 Clause 6.110) i) Capacitive Current Switching Tests (IEC 62271-100 Clause 6.111) j) Idle Cable Current Breaking Test (IEC 62271-100 Clause 6.102) k) Small Inductive Load Switching Test (IEC 62271-100)

4.3.3. Current Transformers

a) Temperature-rise test (IEC 61869-2 Clause 7.2.2) b) Impulse voltage withstand test on primary terminals (IEC 61869-2 Clause 7.2.3) c) Wet test for outdoor type transformers (IEC 61869-1 Clause 7.2.4) d) Electromagnetic Compatibility (EMC) tests (IEC 61869-1 Clause 7.2.5) e) Tests for accuracy (IEC 61869-2 Clause 7.2.6) f) Verification of the degree of protection by enclosures (IEC 61869-1 Clause

7.2.7) g) Short-time current tests (IEC 61869-2 Clause 7.2.201)

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h) Chopped impulse voltage withstand test on primary terminals (IEC 61869-1 Clause 7.4.1)

i) Multiple chopped impulse test on primary terminals (IEC 61869-1 Clause 7.4.2) j) Transmitted overvoltage test (IEC 61869-1 Clause 7.4.4) k) Mechanical tests (IEC 61869-1 Clause 7.4.5) l) Internal arc fault test (IEC 61869-1 Clause 7.4.6)

Protection stage shall be taken as 1 at least. Class shall be taken as 1 at least. Any test applied on a current transformer; shall be accepted valid for the current transformers with same voltage level, same type and same design. 4.3.4. Voltage Transformers

a) Temperature-rise test (IEC 61869-3 Clause 7.2.2) b) Chopped impulse test (IEC 61869-1 Clause 7.4.1) c) Impulse voltage test on primary terminals (IEC 61869-3 Clause 7.2.5) d) Wet test for outdoor type transformers (IEC 61869-1 Clause 7.2.4) e) Electromagnetic Compatibility (EMC) tests (IEC 61869-1 Clause 7.2.5) f) Test for accuracy (IEC 61869-3 Clause 7.2.6) g) Verification of the degree of protection by enclosures (IEC 61869-1 Clause

7.2.7) h) Enclosure tightness test at ambient temperature (IEC 61869-1 Clause 7.4.7) i) Capacitance and tanδ measurement at power-frequency (IEC 61869-3 Clause

7.4.3) j) Short-circuit withstand capability test (IEC 61869-3 Clause 7.2.301) k) Ferro-resonance tests (IEC 61869-5 Clause 7.2.503) l) Transient response test (for protective capacitive transformers) (IEC 61869-5

Clause 7.2.504) m) Type test for carrier frequency accessories (IEC 61869-5 Clause 7.2.505) n) Transmitted overvoltage test (IEC 61869-1 Clause 7.4.4) o) Mechanical tests (IEC 61869-1 Clause 7.4.5) p) Determination of the temperature coefficient (Tc) (IEC 61869-5 Clause 7.4.501) q) Tightness design test of capacitor units (IEC 61869-5 Clause 7.4.502)

4.3.5. Disconnectors

a) Dielectric tests (IEC 62271-102 Clause 7.2) b) Low- and high-temperature tests (IEC 62271-102 Clause 7.104) c) Short-time withstand current and peak withstand current tests (IEC 62271-102

Clause 7.6) d) Operating and mechanical endurance tests (5000 operation) (IEC 62271-102

Clause 7.102) 4.3.6. Earthing Switches

a) Dielectric tests (IEC 62271-102 Clause 7.2) b) Low- and high-temperature tests (IEC 62271-102 Clause 7.104)

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c) Short-time withstand current and peak withstand current tests (IEC 62271-102 Clause 7.6)

d) Operating and mechanical endurance tests (5000 operation) (IEC 62271-102 Clause 7.102)

4.3.7. High Speed Earthing Switches

a) Dielectric tests) (IEC 62271-102 Clause 7.2) b) Low- and high-temperature tests (IEC 62271-102 Clause 7.104) c) Test to prove the short-circuit making performance of earthing switches (Class

E1) (IEC 62271-102 Clause 7.101) d) Operating and mechanical endurance tests (5000 Operation) (IEC 62271-102

Clause 7.102) e) Short-time withstand current and peak withstand current tests (IEC 62271-102

Clause 7.6) 4.4. Routine Tests The following routine tests shall be carried out on each GIS transport unit which is completely assembled:

a) Dielectric tests (IEC 62271-203 Clause 7.1) - Power-frequency voltage tests on the main circuit (IEC 62271-203 Clause

7.1.101) - Partial discharge measurement (IEC 62271-203 Clause 7.1.102) b) Tests on auxiliary and control circuits (IEC 62271-203 Clause 7.2) c) Measurement of the resistance of the main circuit) (IEC 62271-203 Clause 7.3) d) SF6 gas leakage detection and tightness tests: In addition to the tests performed

on all the basic components to ensure the gas tightness of the compartments; a tightness test shall be performed with pressurized SF6, provided by the gas tightness system, directly on the main shipping units, if possible, or on smaller sub-assemblies of the same shipping unit (For these tests; the proper test reports at the during production stage shall be accepted, as well) (Tightness test) (IEC 62271-203 Clause 7.4)

e) Design and visual checks (IEC 62271-203 Clause 7.5) f) Pressure test on partitions (IEC 62271-203 Clause 7.104) g) Tests on auxiliary circuits, equipment and interlocks in the control mechanism

(IEC 62271-203 Clause 7.103) h) Mechanical operation tests on the units as per specific standards (IEC 62271-

203 Clause 7.102) i) Humidity test of SF6 gas (The offer for making this test on site will be accepted.) j) Inspection of auxiliary and control circuits, and verification of conformity to the

circuit diagrams and wiring diagrams (IEC 62271-1 Clause 8.3.1) The routine tests to be carried out for the circuit breakers, disconnectors, earthing switches, high speed earthing switches and instrument transformers are specified below: 4.4.1. Circuit Breakers

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a) Dielectric test on the main circuit (IEC 62271-100 Clause 7.1) b) Tests on auxiliary and control circuits (IEC 62271-100 Clause 7.2) c) Measurement of the resistance of the main circuit (IEC 62271-100 Clause 7.3) d) Mechanical operating tests (IEC 62271-100 Clause 7.101) e) Mechanical operating tests for making and closing times (IEC 62271-100

Clause 7.101) 4.4.2. Current Transformers

a) Power-frequency voltage withstand tests on primary terminals (IEC 61869-1 Clause 7.3.1)

b) Partial discharge measurement (IEC 61869-1 Clause 7.3.2) c) Power-frequency voltage withstand tests between sections (IEC 61869-1

Clause 7.3.3) d) Power-frequency voltage withstand tests on secondary terminals (IEC 61869-

1 Clause 7.3.4) e) Test for accuracy (IEC 61869-2 Clause 7.3.5) f) Verification of markings (IEC 61869-1 Clause 7.3.6) g) Enclosure tightness test at ambient temperature (IEC 61869-1 Clause 7.3.7) h) Inter-turn overvoltage test (IEC 61869-2 Clause 7.3.204) i) Measurement of capacitance and dielectric dissipation factor (IEC 61869-2

Clause 7.4.3) 4.4.3. Voltage Transformers

a) Power-frequency voltage withstand tests on primary terminals (IEC 61869-1 Clause 7.3.1)

b) Partial discharge measurement (IEC 61869-1 Clause 7.3.2) c) Power-frequency voltage withstand tests between sections (IEC 61869-1

Clause 7.3.3) d) Power-frequency voltage withstand tests on secondary terminals (IEC 61869-1

Clause 7.3.4) e) Test for accuracy (IEC 61869-1 Clause 7.3.5) f) Verification of markings (IEC 61869-1 Clause 7.3.6) g) Enclosure tightness test at ambient temperature (IEC 61869-1 Clause 7.3.7) h) Ferro-resonance check (IEC 61869-1 Clause 7.3.501) i) Routine tests for carrier frequency accessories (IEC 61869-1 Clause 7.3.502) j) Capacitance and tan δ measurement at power frequency (IEC 61869-1 Clause

7.4.3) 4.4.4. Gas – Air Bushings

a) Measurement of dielectric dissipation factor (tan δ) and capacitance at ambient temperature (IEC 60137 Clause 9.2)

b) Dry power-frequency voltage withstand test (1 minute at minimum rated SF6 pressure) (IEC 60137 Clause 9.4)

c) Measurement of partial discharge quantity at 1,5 Um√3 rated maximum voltage / minimum SF6 gas pressure (IEC 60137 Clause 9.5)

d) Resistance measurement

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4.4.5. Disconnectors, Earthing Switches and High Speed Earthimng Switches

a) Power frequency dielectric test on the main circuit (IEC 62271-102 Clause 8.2) b) Tests on auxiliary and control circuits (IEC 62271-102 Clause 8.3) c) Measurement of the resistance of the main circuit (IEC 62271-102 Clause 8.4) d) Tightness test (IEC 62271-102 Clause 8.5) e) Design and visual checks (IEC 62271-102 Clause 8.6) f) Mechanical operating tests (IEC 62271-102 Clause 8.101)

4.4.6. Field Tests The Contractor shall furnish full details of all tests to be carried out on the completely assembled plant. All necessary test equipment shall be provided by the Contractor. The following tests and verifications shall be performed on the equipment after the assembly at site:

a) Main circuit contact resistance measurement for circuit breakers and disconnecting switches,

b) Verification of the gas pressure control device operation, c) Verification of the gas tightness on the junctions at the site by means of the

sealed gas tightness system, d) Gas analysis tests (IEC 60376 and IEC 60480) (% purity and humidity (dew

point) measurements shall be performed (Compartment gas shall be measured at least 3 days later)

e) Verification of SF6 gas filling pressures of the compartments, f) Operating tests on the units and measurement of operating times of the circuit

breakers, g) Dielectric tests of HV equipment: GIS shall be subjected to a power frequency

test as the test bushings are assembled (if so required) and the removable connections to power cable and transformer and the voltage transformer are dismantled. Depending on the testing facilities and the mutual agreement between the Contractor and TEİAŞ, the test shall be performed on the whole switchgear or separately for each section. The test shall consist of the application of the following voltages between the conductor and earth:

For 170 kV GIS Equipment:

- Power frequency voltage test at the value of 270 kV rms, for 1 minute duration

For 400 kV GIS Equipment:

- Power frequency voltage test at the value of 515 kV rms, for 1 minute duration - Partial discharge measurements h) Gas density monitor check i) Interlock test j) 2 kV effective voltage test with power frequency for 1 minute on the control

circuit k) Primary injection tests on the current and voltage transformers used for

measurement and protection in order to control the ratio, polarity, accuracy

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class, saturation factor (for current transformers) and the burdens of the secondary circuits.

The satisfactory results of these tests shall result with the acceptance of the equipment. 5. MATTERS RELATED WITH THE TESTS AND ACCEPTANCE CRITERIA 5.1. High Voltage SF6 Gas Insulated Switchgear 5.1.1. Type Tests The Bidder/Contractor shall submit to the Administration the type test reports regarding the switchgear for the tests specified under the title “4.3.1 Type Tests” in the Technical Specifications”, in accordance with the latest editions of the relevant standards and TS EN 62271-203 standard in a laboratory that is accredited by the accreditation institutions included in the Turkish Accreditation Agency or International Laboratory Accreditation Collaboration Mutual Recognition Agreement or in a laboratory to be approved by the Administration under the supervision of the Administration’s representatives Regarding the type tests for switchgear;

- Short-time withstand current and peak withstand current tests) (IEC 62271-203 Clause 6.6)

- Verification of making and breaking capacities (for circuit breaakers and high speed earthing switches) (IEC 62271-203 Clause 6.101)

- Test under conditions of arcing due to an internal fault (IEC 62271-203 Clause 6.105)

The reports of those type tests that are not issued by one of the STL member laboratories shall be rejected; the repetition of these rejected tests shall be performed in a STL member laboratory and certification shall be required.

The type test reports / certificates submitted to the administration shall belong to the tests manufactured in the same factory with the offered high voltage SF6 gas insulated switchgear, shall be applied on a switchgear of same type and exactly same feature.

Regarding this type of test reports / certificates; a table including the information about in which factory the type-tested switchgear was manufactured, which type and feature of high voltage SF6 gas insulated switchgear it belongs to, in which laboratory and on which date the type tests were carried out and the documents related to the laboratory where the type tests were carried shall be submitted to the administration with necessary explanations in detail.

If the offered type tests shall be carried out in the own accredited laboratory of the manufacturer / seller, they shall be performed under the supervision of the Administration representatives.

If the manufacturer produces the switchgear under a license, it shall have the type tests of the switchgear performed. Type tests of the licensor company shall not be accepted.

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If there are type tests that are requested to be repeated by the administration, these tests shall be specified in the tender file. In this case, even if the test reports / certificates of the type test requested to be repeated are submitted by the Contractor, it shall be repeated under the supervision of the Administration without any charge to the Administration.

Seismic adequacy of GIS equipment; shall be proved with test according to IEC TR 62271-207 or by dynamic analysis method according to IEEE 693 standard by using the required response spectrum (RRS: Required Response Spectrum) at the High (ZPA: 5 m / s2) qualification level defined in IEC TR 62271-207technical report.

The analysis for seismic adequacy is required to be approved by an organization with previous references in this field or by a university competent in this field. If the buyer does not find the approval institution or university sufficient in this regard, the analysis shall not be accepted. 5.1.2. Routine Tests The sample tests specified under the title “4.4. Routine Tests” in the Technical Specifications shall be applied by the Manufacturer on the gas insulated metal enclosed switchgear and control gear ordered within the scope of the contract, in accordance with the latest editions of the relevant standards and IEC 62271-203 standard and the routine test reports shall be submitted to the Administration in the form of 2 (two) duplicable electronic copies (soft copy: USB Flash Memory / CD/ DVD). 5.1.3. Acceptance Tests The tests specified under the title of “4.4 Routine Test” in the Technical Specifications shall be applied as acceptance tests. Acceptance Tests shall be performed at Contractors expense in the laboratory of the Manufacturer or in a laboratory to be approved by the Administration, under the supervision of TEİAŞ representatives. The calibrations of the devices to be used in the tests shall be performed by an accredited organization and the calibration certificates and routine test reports shall be submitted to the Inspection and Acceptance Commission before starting the tests. Otherwise test and acceptance procedure shall not be initiated. 5.2. Acceptance Criteria a. Acceptance tests shall be performed at the manufacturer’s laboratory with the

participation of the Administration’s representatives. In case the Administration representatives do not participate in the aforementioned tests, the manufacturer shall submit the factory routine test reports to the Administration.

b. The calibrations of the devices to be used in the tests shall be performed by an accredited organization and the calibration certificates shall be submitted to the Inspection and Acceptance Commission before starting the tests.

c. Positive results shall be obtained from all type tests. In case a type test gives a negative result, this type of high voltage SF6 gas insulated switchgear that gives

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the negative result shall be rejected. However, upon the request of the Contractor and the approval of the Administration, the repetition of all tests for the new product which is produced by making necessary changes, at the expense of the Contractor, within a reasonable period, may be accepted without giving period extension under the sole discretion of the Administration.

d. Positive results shall be obtained from all acceptance tests. In case an acceptance test gives a negative result, this type of high voltage SF6 gas insulated switchgear that gives the negative result shall be rejected.

None of the samples selected for the test should be defective. In case of defective units, the Administration may reject the whole lot or request the Contractor to replace the defective units and have them tested in accordance with the requirements of type technical specifications for the relevant tests. 5.3. Acceptance Procedure The administration or its representative is free to inspect and / or test the high voltage SF6 gas insulated switchgear during manufacturing in order to verify their compliance with the Technical Specifications. The Administration shall inform the Contractor in writing about the identity of any representative assigned for these purposes. Production control and tests can be carried out at the premises of the Manufacturer, at the material delivery location and / or at the final delivery location of the materials. In the production control and tests, without any expense to the Administration, all kinds of reasonable help and convenience shall be provided, including permission to the auditors to review the drawing and production information. The Contractor shall notify the Administration of the test program after the Contract is signed. The Contractor shall notify the Administration of the actual starting date of the tests at least 45 (forty five) days before, for the tests to be performed abroad and at least 15 (fifteen) days before, for the tests to be performed in the country. In consequence of the successful test and inspection, the test reports shall be mutually signed and the representatives of the Administration shall place a Shipment Order for delivery. The Contractor shall submit 2 (two) copies of mutually signed test report to the representatives of the Administration. However, the Administration may inform the Contractor in time that it shall not be present at the tests. If the Administration does not notify its participation to the tests in written 48 hours beforehand, the Contractor shall perform the tests and notify their results to the Administration. The test reports prepared and signed by the Contractor shall be sent to the Administration in 3 (three) copies for inspection and approval. If the test reports are approved, the Administration shall place a Shipment Order for delivery and 1 (one) approved copy of test report shall be sent back to the Contractor. If it is determined that the examined and tested materials do not comply with the Technical Specifications, the Administration shall reject them. If deemed appropriate by the administration; the contractor shall replace the rejected materials with new ones, at its own expense or make changes to ensure its compliance with the Technical Specifications.

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6. SERVICE AND REPAIR WORKS The Contractor shall submit the documents that will evidence that it will provide the maintenance, repair, spare parts provision and similar services as prescribed in the specifications using technical personnel, who has been authorized and certificated by GIS producer, to the Directorate before the provisional acceptance of the center. In case of replacement of such technical personnel in the future, the approval of the Directorate shall be obtained. Employment of mentioned personnel in repair works shall be subject to the confirmation by the Directorate. The personnel, who has not been found sufficient and who has not been approved by the Directorate, shall not be employed. The Contractor shall apply maintenance and repair works and spare part supply and other services in the scope of ISO 9001:2008 quality management system. The Contractor shall document before the provisional acceptance of the center that;

- It has or is able to provide the hardware and equipment to perform the maintenance and repair works for the proposed GIS type,

- It has or is able to provide the hardware and equipment to perform the field tests defined in the Technical Specifications,

- It is able to have the technical personnel, who has the following certificates, available whenever necessary, and which certificates shall be issued by the High Voltage Gas Insulated Switching Equipment producer and shall be still valid;

a) For assembly/ disassembly works; installation, function test, SF6 gas

measurement and gas pumping/ discharge works and failure follow up certificate,

b) For commissioning works; testing, SF6 gas measurement and gas pumping/ discharge works, failure follow-up certificate,

c) For repair works; for the proposed GIS type, certificate showing that the personnel is capable of providing maintenance service at any level

- It shall be at the site and start working together with all necessary technical

equipment and service and maintenance team within forty eight (48) hours (2 calendar days) following the notification of the failure to it and shall complete the detection work within seventy two (72) hours (3 work days).

In case repair work (works) due to reasons that can not be referred to the Contractor are needed within the warranty period, the Contractor shall perform the necessary repair work (works) against the charges indicated in sub-article 3.6.6, the details of which are given in the “Repair Works Prices” upon the request of the Employer and/or for a period of 5 years after the expiry of the warranty period. Furthermore, the Contractor shall submit a Bank Warranty Letter in an amount equal to the amount of 10% of the “Repair Works Services Contract Price” to the Employer one month before the date of expiry of performance bond of the Contract. The validity of such warranty shall be 5 (five) years after the date of expiry of the warranty period of the contract. The Performance Bond Letter of the contract shall not

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be returned to the Contractor / Bank and shall be seized unless the Warranty Letter for repair services is delivered to the Employer. The bid of the Bidder, who did not give “Repair Works Prices” in its bid and/or who did not fill the “Repair Works Prices” (including unit price for each work item, total price and grand total) shall not be found appropriate and shall be rejected. For the 5 year period indicated above, the Contractor shall notify a fixed communication address for repair works. In case of any address change within such period, the Contractor is responsible for notifying such address change and the new address to the Employer within maximum 15 days. The relevant repair price shall be paid to the Contractor upon the successful completion of the work as accepted by the Employer. The Contractor shall perform the repair and maintenance works in compliance with the Employer – approved drawings and methods. 6.1. Failure Detection The failures occurring within the warranty period or within five (5) years following the warranty period shall be notified to the Contractor by the Employer through facsimile and electronic mail message. The Contractor shall be present at the site and start the failure detection with its technical personnel authorized and certificated by the GIS producer within forty eight (48) hours (2 calendar days) following the notification of the failure to it by the Employer, it shall complete the failure detection work within seventy two (72) hours (3 calendar days) (excluding gas discharge and gas charge periods) and shall submit the failure report signed by the authorized personnel to the Employer. The report shall contain the details related with equipment and processes related with the troubleshooting work as well as information on the failure. 6.2. Failure Repair Method Following the failure detection indicated in Article 3.6.1, the drawings and methods related with the repair method to be applied shall be prepared by the Contractor and submitted to the Employer for approval. After obtaining the approval of the Employer, the Contractor shall commence the works necessary for the provision of materials necessary for failure repair. If it is possible to provide the materials from the Operational Spares of the Directorate, the works shall be commenced within maximum 48 hours (2 calendar days) following the approval of the failure report by the Employer. 6.3. Supply of Materials Necessary for the Repair of Failure The design, production and tests of the materials that will be used for the repair of the failure shall be in compliance with these specifications and shall be performed by the same manufacturer, who has undertaken the supply services for …………….GIS

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switching under contract no ………….. The Contractor is obliged to supply the equipment taking into consideration the following maximum periods after approving the failure report.

- “The Operating Mechanism for CB Complete” the latest (720 hours) “The breaker mechanism represents the driving mechanism and connection members, which are capable of controlling one phase for one-phase systems and three phases for 3-phase mechanisms, consisting of spring, hydraulic or hydraulic + spring.

- “Complete Set of Pole for CB” the latest (720 hours) “Breaker means the cut-

off cell equipment excluding the mechanism and the connections, but including the external housing. It is assessed to be 3-phase for 3-phase systems and 1 phase for 1-phase systems.”

- “Trip and Closing Coils for CB (Each trip and closing coils)” the latest (720

hours) “It means only the coil set in the mechanism.

- “Operating Mechanism for Disconnector” the latest (720 hours), “Disconnector mechanism means the main equipment ensuring movement together with all external equipment.”

- “Disconnector Unit” the latest (720 hours), “Disconnection unit means the

disconnection contacts, insulator and connection connector together with the external housing excluding the mechanism and its connections. It is assessed to be 3 phase for 3 phase systems and 1 phase in 1 –phase systems.”

- “Motor for Disconnector” the latest (720 hours) “Means the motor in the

disconnector mechanism.”

- “Complete Set of Contacts for Earthing Switch” the latest (720 hours)

- “Motor for Earthing Switch” the latest (720 hours)

- “Complete Set of Contacts for Fast Earthing Switch” the latest (720 hours)

- “Operating Mechanism for Fast Earthing Switch” the latest (720 hours)

- “Motor for Fast Earthing Switch” the latest (720 hours)

- “Winding of Current Transformer” the latest (720 hours) For coil types out of the gas chamber, it means the coil group in the feeder, the terminal connections and for coil types in the gas chamber it is assessed as a coil group including the metal enclosure, internal and external equipment.”

- “Voltage Transformer” the latest (720 hours) “It individually represents 1 or 3

phase voltage transformer.”

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- “External Bushing (SF6/Air Bushing)” the latest (720 hours) “It represents the silicon-enclosure bushing and internal conductor that provides the GIS and transformer, line or busbar connection.”

- “Cable Box Compartment” the latest (720 hours) “It means the entire

equipment of the compartment belonging to cable entrance”

- “Busbar Conductor” the latest (720 hours) “shall be assessed taking into consideration the dimensions of the longest compartment.”

- “Connector” the latest (720 hours) “It means 1 connector regardless of

connector types.”

- “Insulator” the latest (720 hours) “It means 1 insulator regardless of insulator types.”

“Indicator” the latest (720 hours) “It means 1 indicator regardless of indicator types.”

“Gas Filling Connection” the latest (720 hours)

“Pressure Relief Piece” the latest (720 hours)

“Filter” the latest (720 hours)

“Gasket” the latest (720 hours) If the materials are provided from the Operational Spares of the Employer, the Contractor shall supply the materials of the same type and characteristics within the above maximum periods following the completion of the works at the section of failure. The payment of the relevant repair work item price shall be made after the delivery of the materials to the Employer. If the mentioned materials can not be supplied within the indicated periods, no payment shall be made and the relevant repair price shall be seized from the warranty of the Contractor. 6.4. Repair of Failure In the troubleshooting works to be performed by the Contractor, minimum one personnel having certificate of competence for assembly, disassembly and troubleshooting works for GIS model shall be present at the worksite. The Contractor may have more personnel present whenever it deems necessary. The Contractor shall notify a certificated personnel to the Employer as the worksite supervisor. For additional personnel needed in case of urgent works, the Employer may assign personnel from its own teams as a support team. No additional charge shall be claimed in relation with the works of such teams. All equipment planned to be used in the work, which is specific to GIS switching works, shall be provided by the Contractor. In cases where gas charge/ discharge and gas analysis devices can not be provided by the contractor, they shall be provided by the Employer. No charge shall be imposed on the contractor for this reason.

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Supply of SF6 gas is the obligation of the contractor within the warranty period. In case it is provided by the Employer, its price shall be collected from the contractor. Gas supply shall be the responsibility of the Employer after the expiry of the warranty period. The contractor chall complete:

- The assembly/ installation work for the “The Operating mechanism for CB complete” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Complete set of pole for CB” within 120 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Trip & Closing coils for CB (Each trip and closing coils)” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Operating mechanism for Disconnector” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly /installation work for the “Disconnector” within 120 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Motor for disconnector” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/installation work for the “Complete set of contacts for ES” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly /installation work for the “Motor for Earthing Switch” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly /installation work for the “Complete set of contacts for FES” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Operating mechanism for FES” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/installation work for the “Motor for Fast Earthing Switch” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Current Transformer (for each core without enclosure)” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Voltage Transformer” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “SF6/Air Bushing” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Cable box compartment” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Busbar conductor” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Connector” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Insulator for each type” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Pressure gauge manometers(each type)” within 72 hours following the delivery of the necessary materials to the Worksite

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- The assembly/ installation work for the “Gas filling valve” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Rupture disc (of each type)” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Filter” within 72 hours following the delivery of the necessary materials to the Worksite

- The assembly/ installation work for the “Gasket” within 72 hours following the delivery of the necessary materials to the Worksite

Gas discharge and gas pumping periods are not included in the above periods. 6.5. Field Tests of Repair Works The tests required in relation with the repair work depending on the location of the failure shall be indicated by the Contractor in the failure report. In case of disassembly or renovation of GIS compartment for repair purposes, dielectric tests shall be performed on HV equipment. , After the completion of Repair Works, field tests and checks shall be applied within twenty four (24) hours. The tests indicated in the failure report shall be performed in compliance with the provisions of routine field tests indicated in the Gas Isolated Switching Area section of the specifications. 6.6. Failure Repair Prices 6.6.1. 6.6.1 The bidder shall determine and propose the repair prices of the indicated

failures in this article. The proposed repair prices shall include all Materials and Services (assembly, field tests, commissioning,…etc) necessary for the completion of repair works indicated in this article. Main items belonging to the necessary Materials and Services are listed below:

a) Provisional supply of equipment, tools and devices necessary for the repair (repairs) or assembly/ installation works,

b) Provisional supply of the equipment, tools and devices necessary for the performance of the field tests indicated in Article 6.5,

c) Preparation of the necessary drawing (drawings) and method (methods), d) Supply of all materials necessary for the repair of the failure (failures), e) All assembly/ installation works necessary for the repair works, and f) Application of field tests after the repair

The proposed prices shall include the prices of all materials and services, which are not indicated in this article, but which are necessary for remedying the failure and for the full operation of the project as a whole. 6.6.2 In case of recurrence of the failure, which required the repair work, within the

warranty period, the Employer and the Contractor shall determine whether the

TEAİŞ



failure is caused by the Contractor through inappropriate material and Service use. The process from such determination by the Employer and the Contractor until the result is obtained shall not impact the works and periods indicated in Article 6 in relation with the performed repair works and the Contractor shall continue the works related with repair.

6.6.3 The decision of the Employer indicated in Article 6.7 shall be binding on both

parties and in case of any dispute between the parties about such decision and/or in case of any negligence/ ignorance in relation with the repair works, the Employer shall seize the performance bond of the Contractor.

6.6.2. In case of failures caused by the contractor due to Inappropriate Material and

Service Use, which occurred within the warranty period, the Contractor shall pay five hundred (500,-TL) Turkish Liras to the Employer against the expenses of the personnel, who the Employer will assign as observer at the stage of determination of the failure location.

6.6.3. A fine equal to two hundred (200,-TL/hour) shall be applied up to twenty four

hours for each one hour delay that may occur for any reason in relation with the periods indicated in Article 6.1, Article 6.3., Article 6.4. and Article 6.5. In case such twenty – four (24) hour period is exceeded, the Employer reserves the right to continue the fine application or to seize the warranty related with the service or repair works.

6.6.4. The repaired part shall be in the scope of Warranty of the Contractor for 2 (two)

years after it is repaired and commissioned. 6.6.5. Scope of Repair Prices THE FOLLOWING WORK ITEMS SHALL BE INCLUDED IN THE REPAIR PRICES TABLE IN ACCORDANCE WITH ARTICLE 6 AND THE TOTAL PRICE OF REPAIR WORKS SHALL BE CALCULATED BASING ON 1 LOT FOR ALL ITEMS.

- “The Operating mechanism for CB complete” price (1 lot) - “Complete set of pole for CB” price (1 lot) - “Trip & Closing coils for CB (Each trip and closing coils)” price (1 lot) - “Operating mechanism for Disconnector” price (1 lot) - “Disconnector” price (1 lot) - “Motor for disconnector” price (1 lot) - “Complete set of contacts for ES” price (1 lot) - “Motor for Earthing Switch” price (1 lot) - “Complete set of contacts for FES” price (1 lot) - “Operating mechanism for FES” price (1 lot) - “Motor for fast Earthing Switch” price (1 lot) - “Current Transformer (for each core without enclosure)” price (1 lot) - “Voltage Transformer” price (1 lot) - “SF6/Air Bushing” price (1 lot) - “Cable box compartment” price (1 lot) - “Busbar conductor” price (1 lot)

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- “Connector” price (1 lot) - “Insulator for each type” price (1 lot) - “Pressure gauge manometers (each type)” price (1 lot) - “Gas filling valve” price (1 lot) - “Rupture disc (of each type)” price (1 lot) - “Filter” price (1 lot) - “Gasket” price (1 lot)

If both of 400 kV and 154 kV GIS equipment is included in the scope of this substation construction work, the work items detailed above shall be separately priced for both 154 kV and 400 kV GIS equipment.

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i. ANNEX.1 WARRANTED CHARACTERISTICS LIST

420 KV HIGH VOLTAGE SF6 GAS INSULATED SWITCHGEAR WARRANTED CHARACTERISTICS LIST

NO TANIM İSTENİLEN ÖNERİLEN

1. Ambient Conditions

1 Type of installation indoor and outdoor

2 Max. ambient temperature (°C)

+ 40

3 Min. ambient temperature (°C)

indoor - 5

outdoor - 25

4 Max. average ambient temperature (°C)

+35

2. Common Features

5 Manufacturer's name

6 Manufacturer's type designation

7

First commercial operation of the offered type referring to the reference list (in the year of)

8 Standards in force IEC

9 Number of phases 3

10 Rated frequency (Hz) 50

11 Rated system voltage (kVrms)

400

12 Max. system voltage (kVrms) 420

13 Rated short-time withstand current (1 sec) (kArms)

63

14 Rated peak short-circuit current (kA)

157,5

15 Rated current:

Busbars (Arms) 4000

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Feeders (Arms) as indicated in

SLD

16 Insulation medium SF6

17 Conductor material

18 Rated lightning impulse withstand voltage (BIL, 1.2/50 µsec) (kV-peak)

at nominal gas pressure 1425

at minimum gas pressure

19 Rated switching impulse 250/2500 µsec withstand voltage (kV peak)



20 Rated power frequency withstand voltage (1 min) (kVrms)



21 Partial discharge test as per IEC 62271-203 clause 6.2.9

22

Number of compartments (Volume of any individual compartment shall not exceed 3500 liters.)

cable/line feeder pcs

transformer feeder pcs

bus coupler pcs

busbar pcs

23 Thickness of enclosure (mm) ≥ 6

24 SF6 gas pressure (at 20 °C) (bar)

for circuit breakers

for busbars

for other compartments

25 SF6 gas losses per compartment per year

≤ 0.5%

TEAİŞ



26 Protection of auxiliary circuits of LV circuits and CT and PT boxes

IP44

27 Heat losses per feeder (kW)

bus coupler feeder at 3150 Arms

line feeder at 3150 Arms

transformer feeder at 3150 Arms

28 Heaviest part for crane (kg)

29 Weight per feeder (ready for operation) (kg)

line feeder

transformer feeder

bus coupler feeder

30 feeder width (mm)

3. Busbars


32 Type designation

33 Single-phase enclosures Yes

34 Material of enclosures Aluminium Alloy

35 Material of busbars

36 Cross section of busbar conductors (mm²)

37 Rated current (Arms) 4000

38 Current density (A/mm²)

39 Rated current at maximum ambient temperature (A)

4000

40 Pressure of SF6 gas at 20 °C (bar)

rated (filling pressure)

of alarm (warning pressure)

of lock out

41 SF6 gas required for one feeder (kg)

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42 Enclosure design pressure (bar)

43 Enclosure test pressure (bar)

4. Circuit Breaker


45 Type designation

46 Class Indoor


48 Single-phase enclosure (Yes/No)

Yes

49 Auto-reclosing (Yes/No)

Yes Power transformer

(400/33) and coupling three phase and the others single-

phase)

50 Rated current (Arms)

line/cable feeder as indicated in

SLD

transformer feeder as indicated in

SLD

busbar coupling feeder 4000

51 Rated cable-charging breaking current (Arms)

IEC 62271-100, Tablo 9’da 420 kV anma gerilimine

karşılık gelen değerler.

52 Rated line-charging breaking

Current (Arms)



53 Rated capacitor bank breaking current (Arms)



54 Pure inductive current breaking capacity (Arms)

IEC 62271-110

TEAİŞ



55 Rated lightning impulse 1.2/50µs withstand voltages (kV peak):

phase-to-earth 1425

across open circuit breaker 1425(+240)

56 Rated switching impulse 250/2500µs withstand voltages (kV peak):

phase-to-earth 650

across open circuit breaker (type test only)

815

57 Maximum overvoltage factor for interruption of rated line charging current (400A)

1.4

58 Maximum overvoltage factor for interruption of rated cable charging current (400A)

1.4

59

Rated transient recovery voltage without restrike (six parameter representation according to IEC)

IEC 62271-100, Tablo 26’da 420 kV

anma gerilimine karşılık gelen

değerler

ITRV Part

- Vi (kV)

- ti (sec)

TRV Part

- V1 (kV)

- t1 (µsec)

- Uc (kV)

- t2 (µsec)

Delay line parameters

- V' (kV)

- t' (µsec)

- td (delay time) (µsec)

60 Rated restrike factor

amplitude factor

rate of rise (V/µsec)

TEAİŞ



61 Rated short-circuit breaking current

AC component (kArms) 63

DC component as per

IEC 62271-100

62 Rated short-circuit making current (asym) (kA peak)

157,5

63 Rated short time current (1 sec) (kArms)

63

64 Rated out of phase breaking current (kArms)

as per

IEC 62271-100

65 Evolving fault interruption (kArms)

63

66 Short-line fault interruption (faults closer than 1 km to the breaker) (kArms)

67 Critical current breaking (kArms)

68 Parallel interruption of short-circuit current:

degree of derating

69 First pole to clear factor as per

IEC 62271-100

70 Rated operating times (msec)

O-0.3sec-CO-1min-CO

opening time

total interruption time ≤ 60

closing time ≤ 100

make time

make-break time ≤ 80

reclosing time 300

maximum time discrepancy between 1st and last pole to close (msec):

new circuit breaker 3

after 10,000 C-0 cycles 5

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maximum time discrepancy between 1st and last pole to open (msec):

3

maximum time discrepancy between contacts of one pole (msec):

2

71 Operating mechanism

number of mechanism per complete 3 phase breaker

3

type of operating mechanism spring

Is there a centralised pneumatic/hydraulic pumping system (yes/no)


rated pneumatic/hydraulic (bar) pressure (all setting steps required)

trip free mechanism (yes/no) yes

auxiliary voltage (volt)

power consumption of (watt)

- closing coils

- tripping coils

- operating cubicle

resistor

number of

- closing coils (pcs)

- tripping coils (pcs) 2

- auxiliary contacts

(NO/NC) (pcs/pcs) 6/6

72 Number of maintenance free operations

at no load 10000

at rated current ≥ 2000

at rated short-circuit ≥ 10

73 Type of interrupter and material of main contacts

TEAİŞ



74 Number of breakers per pole 2 or 1

Pressure of the SF6 gas at 20 °C (bar)

rated

of alarm

of lock out

75 Gas quantity of complete (kg) breaker (three phase)



78 Material of the enclosure Aluminium alloy

5. Disconnecting Switches


80 Type designation


82 Single-phase separately enclosed phases (yes/no)

yes


transformer, cable/line feeder as indicated in

SLD



63

85 Rated peak short-circuit current (kApeak)

157,5

86 Charging current breaking capacity (Arms)

≥ 0.5

87 Magnetising current breaking capacity (A)

88 Rated lightning impulse withstand voltage (1.2/50 µsec) (kV peak)

to earth 1425

across the isolating distance 1425 (+240)

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89 Rated switching impulse 250/2500µsec withstand voltages (kV peak):

phase-to-earth 1050

across the isolating distance 1050 and 900

(+345)

90 Rated power frequency withstand voltage (1 min.) (kVrms)

to earth 650

across the isolating distance 815

91 Rated busbar commutation voltage (Vrms)

20

92 Rated busbar commutation current (Arms)

1600

93 Motor voltage (Volt)

94 Motor power (Watt)


for closing

for opening

96 Operating time (sec)

opening

closing

97 Hand operating facilities (yes/no)

Yes

98 Mechanical endurance without maintenance (cycles)

5000

99 Type of contact

100 Material of contact surface

101 Auxiliary contacts

number(NO/NC) (pcs/pcs) 6/6

voltage (volt)

102 Pressure of SF6 gas at 20°C(bar)

rated

of alarm

of lock out

TEAİŞ



103 Total gas weight of complete disconnecting switch (single-phase units) (kg)



106 Material of the enclosure Aluminum Alloy

107 Minimum insulation distance (mm)

to earth

between open contacts

6. High Speed Earthing Switches


109 Type designation



yes


63


withstand current 157,5

making current 157,5


1425

115 Rated 250/2500µsec switching impulse withstand voltage (kV peak)

1050

116 Rated power frequency withstand voltage (1 min.) (kV rms)

650




for closing

for opening

TEAİŞ




opening

closing

121 Hand operating facilities(yes/no)

Yes

122 Mechanical endurance without maintenance (C-O cycles)

5000

123 Type of contact



Number (NO/NC) (pcs/pcs) 6/6

Voltage (volt)


rated

of alarm

of lock out

127 Total gas weight of complete earthing switch (three phase) (kg)




131 Minimum insulation distance between open contacts (mm)

High-speed earthing switches of line/cable fedeers with making

and breaking capacity of induced currents

Required characteristics are the same as

specified for the High Speed Earthing

switches, with the following additional

requirements:

132 Making and breaking capacity of induced currents at a voltage of 20kVrms:

electrostatic induced current (Arms)

18

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electromagnetically induced current (Arms)

160

7. Maintenance Earthing Switches





yes


63

138 Rated peak short-circuit withstand current (kA peak)

157,5


1425

140 Rated 250/2500µsec switching impulse withstand voltage (kV peak)

1050


650




for closing

for opening


opening

closing


Yes


5000

148 Type of contact



TEAİŞ




Voltage (volt)


rated

of alarm

of lock out






8. Current Transformer-Cable/ line bays

(see core locations in single-line diagram)




160 Rated primary current (Arms)

as indicated in SLD

161 Rated secondary current (Arms)

1/1/1/1

162 Protection core (pcs)

3

accuracy class 5P20

burden (VA)

163 Measuring core (pcs) 1

accuracy class 0.5

burden (VA)

safety factor ≤5

164 Rated short-time withstand current (1sec) (kArms)

63

TEAİŞ



165 Rated peak short-circuit current (kA peak)

157,5

166 Insulation material

167 Dielectric loss factor at 20°C (tanδ)

168 Dielectric tests and partial dicharge tests

as per IEC 61869

169 Inside or outside of the enclosure

9. Current Transformers-Bus coupling bay

(see core location in single-line diagram)





as indicated in SLD


1/1/1/1

175 Protection core (pcs)

3

accuracy class 5P20

burden (VA)


accuracy class 0.5

burden (VA)

safety factor ≤5


63


157,5




as per IEC 61869


TEAİŞ



10. Voltage Transformer (for cable/line feeder, busbar)




186 Rated primary voltage (kV) 400/√3

187 Rated secondary voltages (kV)

0.1/√3; 0.1/√3

accuracy class 0.5 + 3P

Burden (VA)

188 Insulation material SF6 Gas

189 Rated lightning impulse 1.2/50 µsec withstand voltage (kV peak)



190 Rated switching impulse 250/2500µsec withstand voltages (kV peak):

at nominal pressure 1050

at minimum pressure

191 Rated induced overvoltage test (kVrms)

at nominal pressure 630kV

at minimum pressure

192 Other dielectric tests as per IEC 61869

193 Partial discharge test as per IEC 61869


195 Rated voltage factor 1.2 permanent

1.5 (30 sec)

196 Is independent enclosure required? (yes/no)

yes


rated

of alarm

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of lock out



200 Material of enclosure Aluminium alloy

201 Net weight (kg)

11. Stress Cones (if applied)




205 Material

206 Density at 20°C

207 Rated power frequency withstand voltage (kVrms)

650

208 Rated impulse withstand voltage (1.2/50 µsec) (kV peak)

1425

209 Breakdown strength (kV/mm)

210 Creepage distance (mm)


212 Tensile strength at 20°C (N/mm²)

213 Elongation at 20°C (KJ/cm²)

214 After heating (140°C/11h)

tensile strength (N/mm²)

elongation (KJ/cm)

215 Hardness

12. Solid Insulators




219 Material


TEAİŞ




650


1425





227 Elongation at 20°C (%) w.o. (KJ/cm²)



elongation (KJ/cm)

229 Hardness

13. Expansion Joints




233 Material

234 Maximum elongation (mm)

235 Maximum compression (mm)

236 Maximum angular displacement (degrees)

237 Net weight (kg)

14. Marshalling Cubicle



240 Material sheet steel

241 Steel thickness (mm) min. 2

242 Surface finish (µm)

TEAİŞ



total paint thickness (minimum)

Insulators epoxy resin

243 Dimensions

Width (mm)

Depth (mm)

height (mm)

244 Total net weight (kg)

15. SF6/Air Bushing



247 Rated voltage (kVrms) 400

248 Maximum system operating voltage (kVrms)

420

249 Rated lightning impulse 1.2/50µs withstand voltage (kV peak)

1425

250 Rated switching impulse 250/2500µs withstand voltage (kVpeak)

1050


630

252 Creepage distance (mm/kV of phase-ground voltage)

25

253 Salt fog withstand test at 420/√3kV (gr of NaCl/liter)

254 Colour of porcelain or composite

255 Mechanical loads (N)

cantilever applied 500mm above top flange

- operating load IEC

- withstand test IEC

vertical operating load IEC

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170 KV HIGH VOLTAGE SF6 GAS INSULATED SWITCHGEAR WARRANTED CHARACTERISTICS LIST

NO TANIM İSTENİLEN ÖNERİLEN

1. Ambient Conditions

1 Type of installation indoor and outdoor

2 Max. ambient temperature (°C)

+ 40

3 Min. ambient temperature (°C)

indoor - 5

outdoor - 25

4 Max. average ambient temperature (°C)

+35

2. Common Features


6 Manufacturer's type designation

7

First commercial operation of the offered type referring to the reference list (in the year of)


9 Number of phases 3

10 Rated frequency (Hz) 50

11 Rated system voltage (kVrms)

154

12 Max. system voltage (kVrms)

170


50

14 Rated peak short-circuit current (kA)

125

15 Rated current:

Busbars (Arms) 3150

Line/transformers/Feeders (Arms)

as indicated in SLD

Bus coupler feeder 3150

TEAİŞ



16 Insulation medium SF6

17 Conductor material

18 Rated lightning impulse withstand voltage (BIL, 1.2/50 µsec) (kV-peak)


at minimum gas pressure 750

19 Rated power frequency withstand voltage (1 min) (kVrms)


at minimum gas pressure 325

20 Partial discharge test

as per

IEC 62271-203 clause 6.2.9

21 Number of compartments

cable/line feeder pcs

transformer feeder pcs

bus coupler pcs

busbar pcs

22 Thickness of enclosure (mm)

23 SF6 gas pressure (at 20 °C) (bar)

for circuit breakers

for busbars

for other compartments

24 SF6 gas losses per compartment per year

≤ 0.5%

25 Protection of auxiliary circuits of LV circuits and CT and PT boxes

IP44

26 Heat losses per feeder (kW)

bus coupler feeder at 3150 Arms

line feeder at Arms as indicated in SLD

transformer feeder at Arms as indicated in SLD

TEAİŞ



27 Heaviest part for crane (kg)

28 Weight per feeder (ready for operation) (kg)

line feeder

transformer feeder

bus coupler feeder

29 Feeder width (mm)

3. Busbars


31 Type designation

32 Common enclosed phases (Yes/No)

33 Material of enclosures Aluminium Alloy

34 Material of busbars

35 Cross section of busbar conductors (mm²)

36 Rated current (Arms) 3150

37 Current density (A/mm²)

38 Rated current at maximum ambient temperature (A)

3150

39 Pressure of SF6 gas at 20 °C (bar)

rated (filling pressure)

of alarm (warning pressure)

of lock out

40 SF6 gas required for one feeder (kg)



4. Circuit Breaker


44 Type designation

45 Class Indoor


TEAİŞ



47 Common enclosed phases (Yes/No)

48 Auto-reclosing (Yes/No)

Yes

for line, cable and reactor feeders

single phase and others three phase


line/cable feeder as indicated in

SLD

transformer feeder as indicated in

SLD


50 Rated cable-charging breaking current (Arms)



51 Rated line-charging breaking

Current (Arms)



52 Max. capacitor bank breaking current (Arms)



53 Pure inductive current breaking capacity (Arms)

IEC 62271-110

54 Maximum overvoltage factor for interruption of rated line charging current (A)

55 Rated lightning impulse 1.2/50µs withstand voltages (kV peak):

phase-to-earth 750

across open circuit breaker 860

56 Rated power frequency 60s withstand voltages (kVrms):

phase-to-earth 325

TEAİŞ



across open circuit breaker (type test only)

375

57 Maximum overvoltage factor for interruption of rated cable charging current (A)

58

Rated transient recovery voltage without restrike (six parameter representation according to IEC)

IEC 62271-100, Tablo 26’da 170 kV

anma gerilimine karşılık gelen

değerler.

ITRV Part

- Vi (kV)

- ti (sec)

TRV Part

- V1 (kV)

- t1 (µsec)

- Uc (kV)

- t2 (µsec)

Delay line parameters

- V' (kV)

- t' (µsec)

- td (delay time) (µsec)

59 Rated restrike factor

amplitude factor

rate of rise (V/µsec)

60 Rated short-circuit breaking current

AC component (kArms) 50

DC component as per

IEC 62271-100

61 Rated short-circuit making current (asym) (kA peak)

125

62 Rated short time current (1 sec) (kArms)

50

63 Rated out of phase breaking current (kArms)

as per

IEC 62271-100

TEAİŞ



64 Evolving fault interruption (kArms)

50

65 Short-line fault interruption (faults closer than 1 km to the breaker) (kArms)

66 Critical current breaking (kArms)

67 Parallel interruption of short-circuit current:

degree of derating

68 First pole to clear factor as per

IEC 62271-100

69 Rated operating times (msec)

O-0.3sec-CO-1min-CO

opening time

total interruption time ≤ 60

closing time ≤ 120

make time

total make time

interrupting time (breaking time) (in cycles)

make-breake time

reclosing time 300

maximum time discrepancy

between 1st and last pole to close (msec):

- new circuit breaker

- after 5,000 C-0 cycles

maximum time discrepancy

between 1st and last pole to open (msec):


number of mechanism per complete 3 phase breaker

type of operating mechanism spring


TEAİŞ




rated pneumatic/hydraulic (bar) pressure (all setting steps required)

trip free mechanism (yes/no) yes

auxiliary voltage (volt)

power consumption of (watt)

- closing coils

- tripping coils

- operating cubicle

resistor

number of

- closing coils (pcs) 1

- tripping coils (pcs) 2

- auxiliary contacts

(NO/NC) (pcs/pcs) 6/6

71 Number of maintenance free operations

at no load

at rated current

at rated short-circuit

72 Type of interrupter and material of main contacts

73 Number of breakers per pole 1

Pressure of the SF6 gas at 20 °C (bar)

rated

of alarm

of lock out

74 Gas quantity of complete (kg) breaker (three phase)




TEAİŞ



5. Disconnecting Switches


79 Type designation


81 Common enclosed phases (yes/no)


transformer, cable/line feeder as indicated in

SLD

busbar 3150

coupling feeder 3150


50


125

85 Charging current breaking capacity (Arms)

≥ 0.5

86 Magnetising current breaking capacity (A)


to earth 750


88 Rated power frequency withstand voltage (1 min.) (kVrms)

to earth 325





for closing

for opening


opening

TEAİŞ



closing

93 Hand operating facilities (yes/no)

Yes

94 Mechanical endurance without maintenance (cycles)

5000

95 Type of contact



number(NO/NC) (pcs/pcs)

voltage (volt) 6/6


rated

of alarm

of lock out

99 Total gas weight of complete disconnecting switch (single-phase units) (kg)



102 Material of the enclosure Aluminum Alloy

103 Minimum insulation distance (mm)

to earth

between open contacts

6. High Speed Earthing Switches






50


125

TEAİŞ




750


325




for closing

for opening


opening

closing


Yes


5000

118 Type of contact




Voltage (volt)


rated

of alarm

of lock out





TEAİŞ




7. Maintenance Earthing Switches






50

132 Rated peak short-circuit withstand current (kA peak)

125


750


325




for closing

for opening


opening

closing


Yes


5000

141 Type of contact




Voltage (volt)

TEAİŞ




rated

of alarm

of lock out






8. Current Transformer (Line/cable Side)





as indicated in SLD


1/1/1/1

155 Protection core (pcs) 3

accuracy class 5P20

burden (VA)


accuracy class 0.5Fs5

burden (VA)


50


125



max.1

TEAİŞ




as per IEC 61869


9. Current Transformer (Transformer feeder 154/33 kV)




166 Rated primary current (Arms) as indicated in

SLD


1/1/1


accuracy class 5P20

burden (VA)


50


125




as per IEC 61869


10. Current Transformer (Transformer feeder 400 /154 kV)





SLD


1/1/1/1


TEAİŞ



accuracy class 5P20

burden (VA)



burden (VA)


50


125




as per IEC 61869


11. Current Transformer (outdoor), for cable-OHL Connection (Clamp Type)





SLD


5


accuracy class 5P20

burden (VA)


50


125




as per IEC 61869

TEAİŞ




12. Current Transformer (bus coupler)





SLD


1/1/1/1


accuracy class 5P20

burden (VA)



burden (VA)


50


125




as per IEC 61869


10. Voltage Transformer (for cable/line feeder, busbar)




216 Rated primary voltage (kV) 154/√3

217 Rated secondary voltages (kV)

0.1/√3; 0.1/√3

accuracy class 0.5 + 3P

TEAİŞ



Burden (VA)

218 Insulation material SF6 Gas

219 Other dielectric tests as per IEC 61869

220 Partial discharge test as per IEC 61869


max.1

222 Rated voltage factor 1.2 permanent

1.5 (30 sec)

223 Is independent enclosure required? (yes/no)


rated

of alarm

of lock out



227 Material of enclosure Aluminium alloy

228 Net weight (kg)

11. Stress Cones (if applied)




232 Material



325


750




TEAİŞ




240 Elongation at 20°C (KJ/cm²)



elongation (KJ/cm)

242 Hardness

12. Solid Insulators




246 Material



325


750





254 Elongation at 20°C (%) w.o. (KJ/cm²)



elongation (KJ/cm)

256 Hardness

13. Expansion Joints




TEAİŞ



260 Material

261 Maximum elongation (mm)

262 Maximum compression (mm)

263 Maximum angular displacement (degrees)

264 Net weight (kg)

14. Marshalling Cubicle



267 Material sheet steel

268 Steel thickness (mm) min. 2

269 Surface finish (µm)

total paint thickness (minimum)

Insulators epoxy resin

270 Dimensions

Width (mm)

Depth (mm)

Height (mm)

271 Total net weight (kg)

15. SF6/Air Bushing



274 Rated voltage (kVrms) 154

275 Maximum system operating voltage (kVrms)

170

276 Rated lightning impulse 1.2/50µs withstand voltage (kV peak)

750


325

278 Creepage distance (mm/kV of phase-ground voltage)

25

TEAİŞ



279 Salt fog withstand test at 420/√3kV (gr of NaCl/liter)

40

280 Colour of porcelain or composite

brown

281 Mechanical loads (N)

cantilever applied 500mm above top flange

- operating load IEC

- withstand test IEC

vertical operating load IEC

TEAİŞ



ii. EK.2 DEVIATION LIST

Order no: …………………………

Drawing No: …………………………

Directorate’s Mat. Code no: ………………………… A- DEVIATIONS FROM TECHNICAL SPECIFICATIONS (The bidder shall clearly indicate which articles include deviations and what those deviations are.) - ………………………………………………………………… - …………………………………………………………………. - …………………………………………………………………. - ………………………………………………………………….. - ………………………………………………………………….. - ………………………………………………………………….. - ………………………………………………………………….. B- DEVIATIONS FROM LIST OF WARRANTED CHARACTERISTICS (The bidder shall clearly indicate which articles include deviations and what those deviations are.) - ………………………………………………………………… - …………………………………………………………………. - …………………………………………………………………. - ………………………………………………………………….