technical specification for 161 kv gas … · “gis type cable termination for 69 kv & 161 kv...

TECHNICAL SPECIFICATION

FOR

161 kV GAS INSULATED SWITCHGEAR EQUIPMENT

TAIWAN POWER COMPANY

TAIWAN, REPUBLIC OF CHINA

Specification No. GIS2

Date: May, 1995

Table of Contents

1. SCOPE....................................................................................................................................GIS2-1

2. GENERAL REQUIREMENTS ..............................................................................................GIS2-1

2.1. Certification ............................................................................................................GIS2-1

2.2. Information .............................................................................................................GIS2-1

2.3. Exceptions...............................................................................................................GIS2-11

2.4. Guarantee ................................................................................................................GIS2-11

2.5. Award of Contract...................................................................................................GIS2-11

2.6. Drawings, etc., by Seller .........................................................................................GIS2-12

2.7. Work to be done by Seller.......................................................................................GIS2-17

2.8. Work to be done by Taiwan Power Company.........................................................GIS2-17

3. STANDARDS AND SERVICE CONDITIONS.....................................................................GIS2-18

3.1. Standards.................................................................................................................GIS2-18

3.2. Service Conditions..................................................................................................GIS2-18

3.3. Drawings.................................................................................................................GIS2-18

4. DETAILED REQUIREMENTS .............................................................................................GIS2-19

4.1. Type.........................................................................................................................GIS2-19

4.2. Circuit Breaker........................................................................................................GIS2-23

4.3. Disconnecting Switch .............................................................................................GIS2-30

4.4. Earthing Switch ......................................................................................................GIS2-32

4.5. Potential Transformer .............................................................................................GIS2-33

4.6. Current Transformer ...............................................................................................GIS2-34

4.7. Outdoor Bushing and Line Terminal ......................................................................GIS2-35

4.8. Cable Termination...................................................................................................GIS2-36

4.9. Terminal Blocks......................................................................................................GIS2-36

4.10. Nameplate ...............................................................................................................GIS2-36

5. ACCESSORY EQUIPMENT .................................................................................................GIS2-37

5.1. Blind Cover.............................................................................................................GIS2-37

5.2. Gas Filling Cart.......................................................................................................GIS2-37

5.3. Special Tools...........................................................................................................GIS2-37

6. TESTS AND REPORTS.........................................................................................................GIS2-37

6.1. General....................................................................................................................GIS2-37

6.2. Type Test .................................................................................................................GIS2-37

6.3. Routine Tests...........................................................................................................GIS2-38

6.4. Field Tests ...............................................................................................................GIS2-39

6.5. Test Fail Condition .................................................................................................GIS2-40

6.6. Additional Test........................................................................................................GIS2-40

6.7. Test Reports ............................................................................................................GIS2-40

7. INSPECTION .........................................................................................................................GIS2-40

8. SUPERVISION OF INSTALLATION....................................................................................GIS2-41

9. SPARE PARTS .......................................................................................................................GIS2-42

10. WEIGHT LIMITATION AND TRANSPORT RESTRICTIONS...........................................GIS2-42

11. PACKING AND SHIPPING...................................................................................................GIS2-42

APPENDIX I: CLASS B INSPECTION SERVICE REQUIREMENT

APPENDIX II: PRICE SCHEDULE

DRAWINGS

1. Drawing. No. TDS3-15-6093, Rev.a dated 78-12-4

“161 kV Power Circuit Breaker Control Circuit with Single Shot Re-closing.”

2. Drawing. No. TDS4-15-6036, dated Mar. 6, 1983

“Shed Form of Bushing Shell.”

3. Drawing. No. TDT-162-2027E, dated June 14, 1988

“GIS Type Cable Termination for 69 kV & 161 kV XLPE Cable.”

4. Drawing. No. TDT-162-2026C, dated July 7, 1988

“GIS Type Cable Termination for 69 kV & 161 kV Oil-Filled Cable.”

5. TDS4-15-6061A, dated Nov. 3, 1987 “Gas filling cart.”

SPECIFICATION

FOR

161 kV GAS INSULATED SWITCHGEAR EQUIPMENT

Taipower Specification No. GIS2

Date: May, 1995

1. SCOPE

1.1. These specifications cover the design, manufacture, assembly, testing and delivery of 161 kV

Sulfur Hexfluoride (SF6) Gas Insulated Switchgear (GIS) Equipment, complete with accessories

and spare parts to be installed in the substations of Taiwan Power Company.

2. GENERAL REQUIREMENTS

2.1. Certification

2.1.1. The Bidder shall submit a certificate together with his bid, issued by the manufacturer,

certifying that he has manufactured and sold 161 kV (750 kV BIL) or higher voltage class of

Sulfur Hexfluoride (SF6) Gas Insulated Switchgear (GIS) for more than five (5) years.

2.1.2. For 161 kV, 2000A, 40 kA GIS, the manufacturer shall certify that he has delivered more

than fifty (50) bays of the same equipment as offered for a period of at least three (3) years

with satisfactory operation record. There shall be a supply record attached to the Bid, giving

full names and addresses of at least three (3) previous purchasers, ratings, quantity, and

delivery date of those switchgear equipment.

2.1.3. For 161 kV, 2000A, 50 kA GIS, the manufacturer shall certify that he has already delivered

or developed the same equipment as offered. There shall be a certified type test report

attached to the Bid.

2.1.4. If the bidder is a local manufacturer, he should have technical cooperation with a foreign

manufacturer. The experience of the cooperation foreign manufacturer shall meet the

requirement as specified in Paragraphs 2.1.1, 2.1.2 & 2.1.3. The local manufacturer shall

also have a Taipower’s certificate of production ability for the equipment with the same or

higher ratings as being furnished.

2.1.5. Bids will not be considered if the manufacturer’s experience does not meet the requirement

as specified in Paragraphs 2.1.1 and 2.1.2 or Paragraphs 2.1.1 and 2.1.3.

2.2. Information

2.2.1. Bidder shall include in his Bid the drawings, descriptive literature and data, in the Chinese

or English language, as specified below. The drawings, descriptive literature and data

furnished must be identified to show the items in the Bid to which they pertain. The

drawings, descriptive literature and data are required to establish, for the purposes of Bid

evaluation and award, detailed of the products the Bidder proposes to furnish as to design,

materials, components and performance characteristics.

2.2.1.1. Outline drawing showing all GIS arrangement, approximate overall dimensions.

2.2.1.2. Drawings or cuts showing the basic design of the each component with its enclosure

and supporting insulators.

2.2.1.3. A written explanation of the basic principles of the circuit breaker proposed

accompanied with drawings, photographs or sketches which will present a clear

picture of the fundamental principles and general arrangement of the circuit breaker

and operating mechanism.

2.2.1.4. Certified test data on previously produced equipment of the same rating and type,

which may include parts test data, proving ability to meet the specifications and shall

further demonstrate the applicability of these test data to the proposed circuit

breaker.

2.2.1.5. Oscillographic evidence that circuit breaker offered will successfully interrupt all

faults within the interrupting rating and the specified time, with complete

information as to methods and connections used for these test.

2.2.1.6. Description and electrical schematic diagrams of circuit breaker control.

2.2.1.7. Drawings and descriptive information as to the proposed disconnecting switch and

earthing switch and its operating mechanism.

2.2.1.8. Drawings and descriptive information (with accuracy and performance curves): as to

the proposed potential transformer and current transformer.

2.2.1.9. Descriptive information for interlocking device.

2.2.1.10. Drawings and descriptive information as to the outdoor bushing.

2.2.1.11. Complete information, including a flow diagram, showing all valves and pressure

involved on the switchgear gas system.

2.2.1.12. Descriptive information of components and characteristics (with curves showing the

pressure against the temperature) of the SF6 gas furnished.

2.2.1.13. Drawings and descriptive information as to the seal of the enclosure.

2.2.1.14. Drawings and descriptive information of the gas leakage detection system for each

compartment of the switchgear equipment.

2.2.1.15. Descriptive information of dielectric characteristics when SF6 gas at atmosphere

pressure.

2.2.2. Bidder shall submit with each copy of his proposal the following operating and rating data.

2.2.2.1. Complete switchgear

2.2.2.1.1. Nominal voltage rating, kV

2.2.2.1.2. Rated maximum voltage, kV, rms

2.2.2.1.3. Rated frequency, Hz

2.2.2.1.4. Rated SF6 gas pressure at 20 kg/cm2 (gauge pressure)

(a) Circuit breaker compartment

(b) Disconnecting switch compartment

(c) Bus bar compartment

(d) Potential transformer compartment

2.2.2.1.5. Range of SF6 gas pressure required for satisfactory operation, kg/cm2

(gauge pressure)

(a) Circuit breaker

(b) Disconnecting switch and put to earth switch

(c) Bus bar

(d) Potential transformer

2.2.2.1.6. Guaranteed maximum leakage of SF6 gas per each

compartment at 20 , annum

2.2.2.1.7. Enclosure

(a) Circuit breaker

Material

Thickness, mm

Type of surface treatment

(b) Disconnecting switch and earth switch

Material

Thickness, mm


(c) Bus bar

Material

Thickness, mm


(d) Potential transformer

Material

Thickness, mm


2.2.2.1.8. Weight of SF6 gas, kg

(a) Circuit breaker compartment

(b) Disconnecting switch and earth switch compartment

(c) Bushing compartment

(d) Potential transformer compartment

2.2.2.1.9. Pole spacing of bushing between phases, M

2.2.2.1.10. Impulse withstand voltage, 1.2×50 s full wave, kV, crest

2.2.2.1.11. Low-frequency withstand voltage, one-minute, kV, rms

2.2.2.1.12. Low-frequency withstand voltage for 3 seconds at zero

gas pressure, kV, rms

2.2.2.1.13. The total temperature of the parts to be handled by

operator in the normal course of his duty,

2.2.2.1.14. The total temperature of external surfaces accessible to an

operator in the normal course of his duty,

2.2.2.1.15. The capacitance of GIS per bay, f

2.2.2.2. Circuit breaker

2.2.2.2.1. Nominal voltage class, kV

2.2.2.2.2. Rated maximum voltage, kV, rms

2.2.2.2.3. Rated voltage range factor, k

2.2.2.2.4. Rated maximum voltage divided by k, kV, rms

2.2.2.2.5. Rated continuous current, amperes, rms

2.2.2.2.6. Rated short circuit current at rated maximum voltage,

amperes, rms

2.2.2.2.7. Maximum symmetrical interrupting capability, amperes,

rms

2.2.2.2.8. Interrupting capability at rated maximum voltage and the duty cycle of

(a) CO + 15 sec. CO amperes, rms

(b) O + zero sec. + CO amperes, rms

(c) O +zero sec. + CO + 3 min. CO amperes, rms

2.2.2.2.9. 3-second short time current carrying capability, amperes,

rms

2.2.2.2.10. Closing and latching capability, amperes, rms

2.2.2.2.11. Maximum magnetizing current switching capability,

ampere, rms

2.2.2.2.12. Maximum line charging current switching capability,

ampere, rms

2.2.2.2.13. Rated permissible tripping time delay, sec.

2.2.2.2.14. Capacitor bank switching capability, amperes

(a) Single capacitor bank breaking current

(b) Back to back capacitor bank breaking current

(c) Inrush making current

(d) Frequency, Hz

2.2.2.2.15. Dielectric characteristics

(a) Low-frequency withstand voltage, dry, one-minute, kV, rms

Line to line

Line to ground

Across open gap

(b) Impulse withstand voltage, 1.2×50 s full wave, kV, crest

Line to ground

Across open gap

(c) Chopped wave withstand voltage, kV, crest

2 s

3 s

(d) Radio influence voltage at 1000 kHz with 102.5 kV

test voltage, line to ground, V

2.2.2.2.16. Type of circuit breaker

2.2.2.2.17. Number of interrupting units in series per pole

2.2.2.2.18. Open gap of main contact per pole

2.2.2.2.19. Method of controlling voltage division between

interrupting units

2.2.2.2.20. Type of contacts

2.2.2.2.21. Material and surface treatment of contacts

2.2.2.2.22. Temperature of main current carrying conductors

2.2.2.2.23. Material of main current carrying conductors

2.2.2.2.24. Time characteristics at rated control voltage and operating pressure, cycles

(Based on 60 Hz)

(a) Opening time (from energization of trip coil to contact

parting) with 100 rated short-circuit current

(b) Closing time

(c) Adjustable range

(d) Factory adjustment for re-closing time

(e) Maximum interrupting time

1. For 25-100 percent of rated interrupting capacity

2. For 0-25 percent of rated interrupting capacity

(f) Maximum time to interrupt opening resister, if

provided, following breaker interrupting

2.2.2.2.25. Operating mechanism and auxiliaries data:

(a) Type of operating mechanism

(b) Closing current at specified control voltage, Amps

(c) Tripping current at specified control voltage, Amps

(d) Rated control voltage

1. Closing, d-v volts

2. Tripping, d-c volts

3. Minimum for correct closing operation, d-c volts

4. Minimum for correct tripping operation, d-c volts

(e) Heaters for control cubicle and common terminal box, number and size.

watts

2.2.2.2.26. The guaranteed number of interrupting operations at rated

short-circuit current without requiring maintenance

2.2.2.2.27. The guaranteed number of interrupting operations at rated

continuous current without requiring maintenance

2.2.2.2.28. Pneumatic operating mechanism:

(a) Number of closing-opening circuit breaker operations

which can be performed by circuit breaker, starting at

normal working pressure and assuming to compressor

operation.

(b) Time required to charge air system form zero pressure

to rated operating pressure, minutes.

(c) Time required to recharge the applicable system to

fully charged condition after five (5) immediately

successive CO operations without replenishment by

compressor (the five (5) operations starting at fully

charged conditions), minutes.

(d) Number of compressor

(e) Rated pressure, kg/cm2

(f) Rating, m3/min, each

(g) Start and stop pressure, kg/cm2

(h) Close lock-out pressure, kg/cm2

(i) Trip lock-out pressure, kg/cm2

(j) Air receiver material

(k) Air receiver internal protective coating

(l) Volume of air vessel, m3

(m)Compressor motor

Type

Rated voltage, volts

Rated horse power, hp

Phase, frequency

2.2.2.2.29. Spring motor-wound operating mechanism:

Operating motor

(a) Voltage, volts

(b) Nominal output, hp

(c) Phase, frequency

(d) Speed, rpm

(e) Time required for charging the spring, seconds

2.2.2.2.30. Hydraulic operating mechanism:

(a) Rated operating pressure

Closing, kg/cm2

Opening, kg/cm2

(b) Low pressure alarm, kg/cm2

(c) Lock-out pressure, kg/cm2

(d) Start/stop pressure, kg/cm2

(e) Hydraulic pump

Rated voltage, volts

Rated horse power, hp

Phase, frequency

(f) Number of closing-opening circuit breaker operations

which can be performed by circuit breaker, starting

at normal working pressure and assuming no pump

operation.

(g) Time required to charge hydraulic system form zero

pressure to rated operating pressure, minutes.

(h) Time required to recharge the applicable system to

fully charge condition after five immediately

successive CO operations without replenishment by

pump (the five operations starting at fully charged

conditions), minutes.

2.2.2.3. Bus bar

2.2.2.3.1. Rated continuous current, amp, rms

2.2.2.3.2. Insulation level

(a) Low-frequency withstand voltage, one-minute, kV, rms

(b) Impulse withstand voltage, 1.2×50 s full wave, kV,

crest

2.2.2.3.3. Material of bus bar

2.2.2.3.4. Material and surface treatment of bus bar connector

2.2.2.3.5. Temperature rise of bus bar,

2.2.2.3.6. Material of insulators

2.2.2.4. Disconnecting switch

2.2.2.4.1. Rated continuous current, amp., rms

2.2.2.4.2. Momentary current, amp., rms

2.2.2.4.3. 3-second current, amp., rms


(a) Low-frequency withstand voltage, one-minute, kV,

rms

(b) Impulse withstand voltage, phase to ground,

1.2×50 s full wave, kV, crest

(c) Low-frequency withstand voltage, across open-gap

one-minute, kV, rms

(d) Impulse withstand voltage across open-gap,

1.2×50 s full wave, kV, crest

2.2.2.4.5. Type of contacts

2.2.2.4.6. Material and surface treatment of contacts

2.2.2.4.7. Temperature rise of contacts,

2.2.2.4.8. Type of operating mechanism


2.2.2.4.10. Loop current interrupting capability

2.2.2.4.11. Permissible max. voltage at loop current interruption,

volt

2.2.2.4.12. Bus bar charging current interrupting capability at

169 kV, amp., rms

2.2.2.5. Earth switch

2.2.2.5.1. Fault making capability for making proof type ES

amp., rms


(a) Low-frequency withstand voltage, one-minute, kV,

rms

(b) Impulse withstand voltage, 1.2×50 s full wave,

kV, crest

2.2.2.5.3. Type of contact

2.2.2.5.4. Material of contact

2.2.2.5.5. Guaranteed number of switching induced current without

replace contact

2.2.2.5.6. Type of operating mechanism


2.2.2.6. Potential transformer

2.2.2.6.1. Rated primary voltage, kV

2.2.2.6.2. Rated secondary voltage, volt

2.2.2.6.3. Ratio

2.2.2.6.4. Total burden rating, VA

2.2.2.6.5. Total thermal burden rating, VA

2.2.2.6.6. The total number of secondary windings

2.2.2.6.7. ANSI accuracy class

(a) For metering

(b) For relaying


(a) Primary, low-frequency withstand voltage, one-minute,

kV, rms

(b) Primary, impulse withstand voltage, 1.2×50 s full

wave, kV, crest

(c) Secondary, withstand voltage, one-minute, volt

2.2.2.6.9. Temperature rise

(a) Winding at

ambient temperature

(b) Hottest-spot winding at

ambient temperature

2.2.2.6.10. Type of potential transformer

2.2.2.6.11. Over-voltage rating factor


2.2.2.7. Current transformer

2.2.2.7.1. Current transformer ratio

2.2.2.7.2. The total number of CT secondary cores for each phase of

circuit breaker

2.2.2.7.3. ANSI accuracy class

(a) For metering

(b) For relaying

2.2.2.7.4. Secondary, withstand voltage, one-minute, volt

2.2.2.7.5. Temperature rise

(a) Winding at

ambient temperature

(b) Hottest-spot winding at

ambient temperature

2.2.2.7.6. Type of current transformer

2.2.2.7.7. Thermal current rating factor

2.2.2.7.8. Material of insulator

2.2.2.8. Outdoor bushing (if required)

2.2.2.8.1. Rated voltage class, kV

2.2.2.8.2. Rated continuous current, amp., rms


(a) Low-frequency withstand voltage, kV, rms

1 minute dry

10 seconds wet

(b) Impulse withstand voltage, 1.2×50 s, full wave, kV,

crest

(c) Impulse withstand voltage, chopped wave, kV, crest

2 s

3 s

2.2.2.8.4. Minimum creepage distance, mm

2.2.2.8.5. Permissible safe cantilever loading at terminal pad of

bushing, kg

2.2.2.8.6. Type

2.2.2.8.7. Manufacturer

2.2.2.9. Power supply requirements

2.2.2.9.1. DC voltage, amperes

2.2.2.9.2. AC voltage, phase and amperes

2.2.2.9.3. Total heater load, watts

2.2.2.9.4. Total motor load, watts

2.2.2.9.5. Others

2.2.2.10. General

2.2.2.10.1. Size and weight

(a) Total net weight of switchgear, kg

(b) Heaviest part to be handled during erection

Name of part

Weight, kg

(c) Heaviest part to be handled during transportation

Name of part

Weight, kV

Height, mm

Width, mm

Length, mm

(d) Dimensions after erection

Height overall, mm

Projected floor space mm mm

(e) Height required for maintenance

2.2.2.10.2. Impact loading during circuit breaker operation, kg

2.2.2.10.3. Noise level of breaker when closing, at one meter from

circuit breaker, db

2.2.2.10.4. Noise level of breaker when opening, at one meter from circuit breaker, db

(a) Non-fault

(b) At fault

2.2.2.10.5. Quantity of SF6 gas for complete switchgear, kg

2.2.2.10.6. Recommended spare parts

2.2.2.10.7. Furnish a list of any special tools needed for installation

and/or maintenance and also indicate which of these the

manufacturer proposes to furnish

2.3. Exceptions

2.3.1. The Bidder shall state in his proposal that he has complied with this specifications. If

exceptions are taken, they shall be listed.

2.4. Guarantee

2.4.1. If within two (2) years after shipment from Seller’s factory, any part of the material or

equipment is found defective because of design, workmanship, or quality of material, the

Seller shall at his own expenses, furnish to Taipower CIF Taiwan port, including customer’s

duty if levied, replacement parts of such design, workmanship, and material as may be

acceptable to Taipower.

2.5. Award of Contract

2.5.1. The Contract will be awarded to the responsible and qualified Bidder whose proposal,

conforming to the specifications, will be most advantageous to the Taiwan Power Company

for the project.

2.5.2. The Taiwan Power Company reserves the right to reject any and all proposals without

assigning reasons and to waive any minor defects in the proposals received.

2.6. Drawings, etc., by Seller

2.6.1. Seller’s drawings - Approval:

2.6.1.1. The Seller shall submit, in the English or Chinese language, within forty-five (45)

days after execution of the Contract, four (4) copies of following drawings, data and

descriptive literature to:

Transmission and Substation Projects Department

Taiwan Power Company

73, Ku Ling Street

Taipei, Taiwan 100

Republic of China

for approval. Detailed dimensions in metric units shall be clearly marked on all

drawings.

2.6.1.1.1. Outline drawing showing overall dimensions of the GIS and the relative

location of the each equipment and bus bar.

2.6.1.1.2. Drawing showing the details of the major component, (circuit breaker,

disconnecting switch, earth switch, potential transformer, current transformer,

outdoor bushing, bus bar etc.), with its enclosure and supporting insulators.

These drawings shall be sufficiently detailed to show the general size of all

parts, and physical clearances necessary for disassembly, the minimum

distance to energize metal parts and the weight.

2.6.1.1.3. Bus bar arrangement drawing showing the locations of support insulators

connectors and expansion joint.

2.6.1.1.4. Dimensional drawings of the interrupting chamber and capacitors, if required.

These dimensional drawings shall be sufficiently detailed to show the general

size of all parts. All assemblies shall be shown in a cutaway or cross-sectional

view with all component parts identified.

2.6.1.1.5. Detailed drawings of circuit breaker operating mechanism.

2.6.1.1.6. Detailed drawings of disconnecting switch and earth switch operating

mechanism.

2.6.1.1.7. Schematic wiring diagram of the switchgear. The wiring diagram shall also

include or indicate the following :

(a) The relative locations of the parts.

(b) A material list to show the names, symbols, quantities, ratings, settings,

and manufacturers of the parts.

(c) The terminal layout.

(d) The operating pressures of the pressure switches, if any.

(e) The time settings of the timers or time relays.

(f) The colors and sizes of the wires.

2.6.1.1.8. Complete back connections wiring diagram of the switching. The wiring

diagram shall also include or indicate the following:

(a) The relative locations of the parts.

(b) All terminal block connections.

(c) The colors and sizes of the wires.

2.6.1.1.9. Detailed drawings of the switchgear gas system. The drawings shall include a

flow diagram, showing all valves and pressure switches, and arrangement of

equipment.

2.6.1.1.10. Detailed drawings of gas leakage detection system, including construction,

location and connection wiring diagrams.

2.6.1.1.11. Drawings of nameplate for equipment of switchgear and accessories.

2.6.1.1.12. Detailed drawings of frameworks for all switchgear including working

platform.

2.6.1.1.13. Foundation drawing of switchgear showing location and size of anchor bolts

and forces which the foundation must be capable of resisting.

2.6.1.1.14. Detailed drawings of potential transformer and current transformer with

performance curves.

2.6.1.1.15. Detailed drawings and descriptive information for interlocking device.

2.6.1.1.16. Detailed drawings and descriptive information for outdoor bushing, if required.

2.6.1.1.17. Outline drawing of compressor, pump, receivers, pressure reducing device and

compressor or pump housing. Wiring diagram of the compressor or pump

motors control circuits. Schematic piping diagram of the entire air system,

including safety provisions.

2.6.1.1.18. Shipping details.

2.6.1.1.19. Descriptive bulletins of accessories or parts not otherwise described above.

2.6.1.1.20. Detailed bulletins of the gas filling equipment to be furnished.

2.6.1.1.21. Any other drawings and data required for use in design of the switchgear

assembly installation or related substation facilities.

2.6.1.2. Each drawing shall be identified by a drawing number, contract number, and the

contract item number. All drawings shall be thoroughly checked for accuracy and

completeness. Such checking shall be endorsed on the drawing by a responsible

official of the Seller.

2.6.1.3. Taiwan Power Company will return one copy of all drawings submitted within 30

calendar days after receipt at the Transmission and Substation Projects Department.

Each drawing returned will be appropriately stamped according to one of the

following categories:

"APPROVED"

Seller is authorized to use the drawing for fabrication. Minor changes may be noted

on the drawing. These changes (plus any others made during the course of

fabrication prior to shipment) shall be incorporated in the drawing and re-submit

shall be made prior to shipment of equipment.

"APPROVED WITH CORRECTIONS"

Seller is authorized to use the drawing for fabrication, incorporating the noted

corrections. Re-submit must be made without undue delay.

"RETURNED FOR CORRECTION"

Seller must change drawing and resubmit for approval before fabrication can be

authorized.

"RECEIPT ACKNOWLEDGED"

This is primarily for record purposes for drawings not specifically required

containing supplemental or explanatory information.

It will also be used when drawing submissions are so incomplete as to make

reviewing impractical. This use will be shown in the answering letter. In this case,

the time for drawing approval by the Taiwan Power Company will not start until all

necessary drawings and information are available.

2.6.1.4. If changes are made in the equipment after original approval, the Seller shall

promptly revise the appropriate drawings and submit four (4) prints of each for

approval.

Verbal discussions of drawings, equipment design, or assembly details between the

Seller and Taiwan Power Company shall not be construed as official approval of

drawings, which are required to be submitted specifically for approval.

The time consumed in submitting drawings for approval shall be included in the

time allowed for completion of the contract.

Taiwan Power Company shall have the right to require the Seller to make any

changes in the designs necessary to make the equipment conform to the

requirements of these specifications without additional cost to the Taiwan Power

Company and the requirement of such changes shall not be accepted as justification

for an extension of time.

Where a drawing is superseded due to a change in design or any other reason, the

new drawing shall state the number of the superseded drawing.

2.6.1.5. Taiwan Power Company's approval of drawings shall in no way relieve the Seller of

his responsibility for supplying equipment in strict accordance with the requirement

of the contract specification.

2.6.1.6. Shipment of the equipment will not be allowed until all necessary drawings are

approved.

2.6.2. Final Drawings, Instruction Books and Information

2.6.2.1. The Seller shall furnish the following drawing and instruction books, in the English

language, to reach

Transmission and Substation Projects Department

Taiwan Power Company

73, Ku Ling Street

Taipei, Taiwan 100

Republic of China

not later than the date that the equipment contracted is ready for delivery from the

Seller's works.

2.6.2.2. The Seller shall furnish following quantity of complete installation, operation and

maintenance instruction books for the circuit breaker, disconnecting switch, earth

switch, potential transformer, current transformer, and all accessory equipment that

may be included therewith. Any changes in subsequent units requiring additions to

or changes in the instructions, drawings or data in the books shall be immediately

covered by addenda and revised drawings.

2.6.2.2.1. Eight (8) books for a lot of switchgear equipment being furnished.

2.6.2.2.2. Three (3) books for each switchgear equipment being furnished.

2.6.2.3. When the equipment, as finally accepted, differs in any way from that described in

the instruction book furnished, the instruction book shall be revised to reflect this

difference and copies of this revision shall be furnished for each book. Each revision

shall be identified and the identification shall include the number or identifying

mark of the superseded part or parts of the instruction book.

2.6.2.4. The instruction books shall be provided with complete instructions and data for

shipment, installation, operation, maintenance, and the ordering of all parts for the

circuit breaker, disconnecting switch, earth switch, potential transformer, current

transformer, and all accessories. All books shall be identified by the contract and

item numbers and the serial numbers of all circuit breakers, disconnecting switches,

earth switches, potential transformers and current transformers to which the books

pertain. Where there is variation between the circuit breaker, disconnecting switch,

earth switch, potential transformer and current transformer supplied under these

specifications, complete information for each condition shall be provided.

This information may be included in a single set of books where feasible or separate

sets of books containing complete instructions and data shall be furnished covering

each variation. In all case, each set of books shall be furnished in quantities given in

Paragraph 2.6.2.3 above. The instruction books shall include but not be limited to

the following:

2.6.2.4.1. Complete instructions and data for ordering of all parts for the switchgear and

all accessories.

2.6.2.4.2. Drawing or cuts showing cross sections of the each component of the

switchgear and the operating mechanism.

2.6.2.4.3. Drawings or cuts showing assembly and cross sections of the circuit breaker

interrupting devices.

2.6.2.4.4. Complete instructions covering installation, assembly, including bolt torque

requirements, operating, maintenance and adjustment of the breaker

mechanism, operating mechanism, and interrupting devices. Cuts or drawings

shall be provided showing all points where adjustments may be made.

2.6.2.4.5. Complete information regarding any limits on frequency of operation without

overheating any components, or any other information affecting application of

the breaker.

2.6.2.4.6. Complete instructions for maintenance of breaker, disconnecting switch earth

switch, potential transformer and current transformer including any special

instructions required for disassembly and assembly of the breaker,

disconnecting switch and earth switch or its parts.

2.6.2.4.7. Detailed lubrication instructions including information on probable points of

wear and recommended service life between lubrications. These instructions

shall include a lubrication chart showing all points of lubrication and the type

of lubricant required. Types of oils used in dash pots, shock absorbers, or other

auxiliary devices, shall be given.

2.6.2.4.8. Complete instructions and information covering the operation, maintenance,

repair, and replacement of the energy storage system used with the circuit

breaker and disconnecting switch, including motor, compressor, recharging of

pressure reservoirs, moisture removal from air systems, and spring, cam, lever

and valve adjustments. Detailed drawings of each different air compressor and

hydraulic pump shall be furnished.

2.6.2.4.9. Complete hydraulic system or air system for operating mechanism and gas

system for circuit breaker. This information shall include the following

applicable pressures:

1. Compressor or pump start and stop setting.

2. Low pressures alarm.

3. Trip lock-out pressure.

4. Close lock-out pressure.

5. Low pressure lockout for re-closing relay.

2.6.2.4.10. Complete parts list, including a breakdown for all assemblies, or

subassemblies, including name or description, catalog number, quantity used

and reference by item number on included drawing. Where an assembly has

been quoted in the Schedule as spare parts, such assemblies shall be clearly

identified.

2.6.2.4.11. Spare parts and gasket list as recommended by the manufacturer, including the

descriptive information listed in Paragraph 2.6.2.4.10 above and in addition,

the current prices for such spare parts or gaskets.

2.6.2.4.12. One set of the curves and data for potential transformer furnished.

2.6.2.4.13. One set of the following curves and data for current transformer furnished:

(a) For Class C relaying current transformer, typical excitation current curves

for each required ratio showing excitation current and voltage applied to

the secondary terminals in accordance with ANSI Standard C57.13.

(b) Approximate resistance at 75 of the secondary windings, including leads

to the first available terminal block, and the number of turns on each tap.

(c) Mechanical and thermal short time current ratings.

2.6.2.4.14. Complete instruction and information covering the operation, maintenance and

replacement of the gas system. It shall also be included the characteristics of

the SF6 gas.

2.6.2.4.15. A complete set of finally approved drawings.

2.6.2.4.16. A list of the special tools being provided by the manufacturer.

2.6.2.4.17. Complete instructions and information covering the operation, repair and

maintenance of the gas filling equipment furnished.

2.6.2.5. Taiwan Power Company shall have the right to make copies of any instruction books,

drawings or data supplied by the Seller, provided such copies are for use only in the

construction, operation, or maintenance of facilities for Taiwan Power Company.

2.6.2.6. The actual scaled shipping weight of the heaviest piece shall be given in the

instruction books. In addition, the Seller shall advise Taiwan Power Company in

writing, of the actual scaled shipping weight of the heaviest piece at the time the

switchgear equipment are ready for delivery. This information is requested in order

that highway transportation of the proposed switchgear equipment by Taiwan Power

Company personnel may be facilitated.

2.7. Work to be done by Seller

2.7.1. The Seller shall design, manufacturer, and test the GIS all in accordance with these

specifications and contract documents.

2.7.2. Furnish all materials for installing the GIS except specified in Paragraph 2.8.

2.7.3. Furnish installation engineer to supervise the installation and commissioning of the GIS as

specified in Paragraph 8.

2.7.4. Transport the equipment to the place as specified.

2.8. Work to be done by Taiwan Power Company

2.8.1. Taiwan Power Company will furnish materials and services as follows.

2.8.1.1. Construct foundation for the GIS in accordance with the drawings and data supplied

by the Seller.

2.8.1.2. Furnish all labor and construction tools for the installation of the contract equipment

under supervision of the Seller’s installation engineer, except the special tools to be

supplied by the Seller.

2.8.1.3. Furnish all permanent electrical conduits and electrical connections external to the

local control cubicle of the GIS.

2.8.1.4. Painting equipment, if required, after installation is completed.

3. STANDARD AND SERVICE CONDITIONS

3.1. Standards

3.1.1. Performance and test of all circuit breaker, disconnecting switch, earth switch, potential

transformer and current transformer covered under these specifications shall conform in all

respects to the latest revision of ANSI Standards and NEMA Standards, except as modified

herein. Equipment meeting other authoritative standards which ensure an equal or higher

quality than the standards mentioned above will also be accepted. Bidders shall furnished

complete information and details concerning the standards to which equipment complies.

3.2. Service Conditions

The equipment shall be suitable for use under the following service conditions:

3.2.1. The equipment will be installed at an altitude below 1000 meters.

3.2.2. The maximum ambient temperature will not exceed 40 and the average ambient

temperature for any 24 hours period will not exceed 30 .

3.2.3. The maximum ambient temperature difference will be 15 within 24 hours and 25

within 30 days.

3.2.4. Exposure to the atmosphere with a maximum relative humidity 100 (annual average 85

) and salty atmosphere.

3.2.5. Frequent typhoons with 10 minutes average wind velocity of 40 meters per second and gust

wind velocity of 60 meters per second.

3.2.6. Severe earthquake shock of a maximum 0.3g accelerating force from horizontal directions.

Two (2) cycles of resonant sine wave due to earthquake shall also be considered.

3.2.7. Severe lightning stroke and frequent hot-line washing.

3.2.8. The neutral of 161 kV system is effectively grounded.

3.3. Drawings

3.3.1. Taipower Standard drawings, listed below, are attached and made a part of these

specifications.

3.3.1.1. TDS3-15-6093, dated 78-12-4

“161 kV Power Circuit Breaker Control Circuit with Single Shot Re-closing.”

3.3.1.2. TDS4-15-6036, dated Mar. 6, 1983

“Shed from of Bushing Shell.”

3.3.1.3. TDT-162-2027E, dated June. 14, 1988

“GIS Type Cable Termination for 69 kV & 161 kV XLPE Cable.”

3.3.1.4. TDT-162-2026D, dated July. 7, 1988

“GIS Type Cable Termination for 69 kV & 161 kV Oil-Filled Cable.”

3.3.1.5. The single-line diagram and preliminary layout drawing will be attached to the

“Invitation to Bid.”

4. DETAILED REQUIREMENTS

4.1. General

4.1.1. Type of Switchgear

4.1.1.1. The switchgear shall be of Sulfur Hex-fluoride (SF6) Gas Insulated Type, installed

indoors or outdoors as specified in Invitation to Bid.

4.1.1.2. Outdoor type GIS shall be totally waterproof.

4.1.2. Layout

4.1.2.1. The arrangement of GIS shall be in accordance with the single line diagram

specified in “Invitation to Bid.” The GIS shall be so designed and arranged for the

limited space as to give the possible minimum outside dimensions.

4.1.2.2. The primary components of the switchgear equipment such as bus bar, circuit

breaker, disconnecting switch, earth switch, potential transformer shall be enclosed

in the separately single-phase earth metal enclosure or in one three-phase common

earth metal enclosure.

4.1.2.3. The height from the base of supporting frame to the grounding potential part of

bushing shall not be less than 2.8 meters.

4.1.3. Insulation Level

4.1.3.1. Circuit breaker, disconnecting switch, potential transformer, current transformer and

outdoor bushing shall withstand the test voltage specified in their respective

paragraph.

4.1.3.2. Each component of the switchgear, including circuit breaker, disconnecting switch,

earth switch, potential transformer, bus bar, bushing enclosure and support insulator

shall withstand the following test voltage.

4.1.3.2.1. At normal operating gas pressure

(a) Low-frequency withstand voltage, one-minute, kV, rms 365

(b) Lightning impulse withstand voltage,

(1.2×50 s full wave), kV, crest 750

4.1.3.2.2. At gas pressure drops to atmospheric pressure

(a) Low-frequency withstand voltage, 3 sec, kV, rms 130

(b) Maximum system voltage, continuous, kV, rms

Line to ground 98

Line to line 169

4.1.3.3. Motor wiring, control wiring, potential transformer and current transformer

secondary shall withstand the following test voltage.

4.1.3.3.1. Motor wiring and control wiring withstand voltage,

one-minute, volts 1,500

4.1.3.3.2. Potential transformer and current transformer secondary

withstand voltage, one-minute, volts, rms 2,500

4.1.3.4. Clearance of live parts to earth, live parts to live parts and isolating clearances shall

be selected taking into consideration the insulation level of the switchgear specified

above and the pressure of the insulating gas.

4.1.4. Continuous Current Rating

4.1.4.1. The rated continuous current rating of all primary components shall be in accordance

with paragraphs specified and these rating shall be taking into consideration the

ambient temperature and limits of temperature rise specified.

4.1.5. Temperature Rise

4.1.5.1. With an ambient temperature of 40 the temperature rise of any component

contained in GIS at rated continuous current and rated frequency shall not exceed

the following values:

4.1.5.1.1. Bus runs without silver plated connector. 30

4.1.5.1.2. Bus runs with silver plated connector. 65

4.1.5.1.3. Silver plated power circuit breaker and switch contacts. 65

4.1.5.2. The total temperature of the parts to be handled by operator in

the normal course of his duty. 50

4.1.5.3. The total temperature of external surfaces accessible to an

operator in the normal course of his duty. 70

4.1.5.4. The insulation material used for the GIS shall be capable of withstanding the above

temperature rise limitations without any deterioration.

4.1.6. Enclosures of the Components

4.1.6.1. The enclosures of SF6 GIS shall be constructed from aluminum alloy, nonmagnetic

stainless steel or steel (if use steel, the adequate counter measure shall be provided to

avoid eddy current path due to magnetic field and to limit the temperature rise of the

enclosures less than the value specified in Paragraph 4.1.5, if necessary) and each

phase shall be divided into a number of components corresponding to the major

components of the switchgear, i.e. circuit breaker, bus bar, disconnecting switch,

earth switch, potential transformer and cable termination. The enclosure shall be

capable of withstanding the effects of an internal arc result from the specified

short-circuit current over a period of at least 0.3 sec. without any deterioration. The

supplier shall submit adequate proof (test certificate or laboratory test report).

4.1.6.2. The enclosures shall be gas tight and shall be provided with gas tight flange.

4.1.6.3. The enclosures and seal shall be designed to withstand the gas pressure encountered

under normal and short circuit conditions which the switchgear is subjected. To

avoid dangerous over-pressure build up in the enclosure due to an internal fault, a

pressure relief device shall be provided for each compartment, if necessary. Number,

location and pressure setting of the devices have to be indicated. The Bidder shall

also indicate the area (in mm2) through which the pressure can escape.

4.1.6.4. The enclosures shall be perfectly earthed. The method of earth shall be subjected to

approval.

4.1.7. Gas Leakage Detection

4.1.7.1. An effective gas leakage detection system shall be provided for each compartment

and connected to an alarm and lock-out control circuit. The system shall be

explained in the Bid.

4.1.8. Supporting Insulators

4.1.8.1. Reliable epoxy resin insulators shall be provided at the intersections between

enclosure compartments to support the live conductors and to act as gas tight

barriers between compartments.

4.1.8.2. The design of the insulator shall be such that it is possible to inspect, maintain or

pressurize each compartment individually without interfering with adjacent

compartments.

4.1.8.3. The design of the insulator shall be such that it can withstand all over pressures

building up in the compartment in case of an internal fault. No design will be

accepted which allows for the insulators to give way under overpressure, thus

communicating the overpressure to compartments not at fault.

4.1.9. Supporting Structure, Inspection Step and Platform

4.1.9.1. Rigid supporting structure shall be provided for the switchgear unless it is a

self-standing type.

4.1.9.2. The design of the supporting structure shall be such that must not interfere with

maintenance, transportation, assembly and disassembly.

4.1.9.3. Inspection steps shall also be provided so that a man can be permitted easy access to

the parts to be operated and maintained in service.

4.1.10. Bus Bars and Connectors

4.1.10.1. Conductors for the bus bar and the various connectors shall be of tubular copper or

aluminum and shall be of adequate dimensions to guarantee the continuous current

as shown in specified single line diagram and short circuit current ratings of the

circuit breakers.

4.1.10.2. The surfaces of the conductors shall have a smooth finish to prevent any electrical

discharges within the insulating SF6 gas. Electrical joints between bus bar sections

and between bus bar and other connectors shall be subjected to the approval.

4.1.10.3. The bus bars and connectors shall be mounted within a gas tight earthed metal

cylindrical enclosure which shall be filled with SF6 gas for insulation between live

parts and earth. A homogeneous uniform electric field be maintained within the

insulating gas. Supports shall be in the form of epoxy resin insulators as specified in

Paragraph 4.1.8.

4.1.11. Insulating Gas

4.1.11.1. SF6 gas required for the all GIS shall be furnished with switchgear. Moreover, gas

cylinder and SF6 gas in more than 10 of above required amount with necessary

connecting hose and fittings shall also be supplied for future maintenance.

4.1.11.2. SF6 gas shall conform in all respects to the latest revision of IEC Standard,

Publication 376.

4.1.12. Internal Fault

4.1.12.1. The internal fault of the SF6 GIS shall be limited to minimum and the design of the

enclosures shall be divided into a number of compartment to ensure the followings:

4.1.12.1.1. The flashover arc will not extend to the adjacent compartment.

4.1.12.1.2. In the case of enclosure damage, gas leakage will not interfere adjacent

compartment.

4.1.13. Expansion, Contraction, Vibration and Noise

4.1.13.1. The design of all component of the SF6 GIS shall take into consideration of its

expansion, contraction and vibration to ensure satisfactory operation under the

service conditions specified in Paragraph 3.2.

4.1.13.2. The impulse noise level shall not exceed 140 db at a horizontal distance of 1 meter

to the measurement point.

4.1.14. Local Control Cubicle

4.1.14.1. Each three-phase bay shall be furnished with a metal enclosed type local control

cubicle mounted adjacent to GIS. The following equipments shall be provided in the

cubicle for local and more remote control.

(a) Instruments and devices required for supervision control of GIS.

(b) Fault indicators for gas monitor.

(c) Local/remote select switch.

(d) Local control switch for circuit breaker.

(e) Position indicating lamps for circuit breaker.

(f) Local control switches with semaphore-type indicator showing the “ON” ”OFF”

positions for disconnecting switch and earth switch.

(g) De-Interlock key switch to cancel the interlock system between circuit breaker

and disconnecting switch and put to earth switch.

(h) Mimic diagram: Made of acrylic and the color shall be red for line and bus bar,

and yellow for earth bus.

(i) Circuit breakers for AC and DC power supply and heater.

(j) Receptacle rated AC 120V, 20 Amp.

(k) Space heater with humidity controller to maintain the internal relative humidity

of cubicle or housing below 60 .

(l) Terminal blocks for terminating all connecting wires from GIS to remote control

room.

(m)No-fuse breaker for DC control source of the major components such as CB, DS

and ES. Provisions shall be independent of any other circuit.

4.1.14.2. The cubicle shall have a hinged for door and shall be waterproof and dustproof.

Provisions shall be made for locking the cubicle door.

4.1.14.3. The cubicle floor shall have blank removable plate with sufficient room for conduits

to permit entrance of the TPC’s control circuits.

4.1.14.4. The wiring and piping materials among cubicle, the GIS and air compressor (if

offered) shall be furnished by Seller. The wiring materials between the local control

cubicle and the remote control room will be furnished by Taipower.

4.1.15. The wire colors of the low voltage wiring circuits shall be as the following:

4.1.15.1. The wire color of DC circuit shall be blue.

4.1.15.2. The wire color of AC 110V circuit shall be green.

4.1.15.3. The wire color of AC 220V circuit shall be orange.

4.1.16. Power Supply

4.1.16.1. Power for operation of motors, pumps, compressors and other auxiliary power

equipment will be supplied from a 220V volts, 3-phase, 60 Hz, 3-wire, delta

connected, station service system provided by Taipower.

4.1.16.2. Station storage battery, provided by Taipower, will be rated 125 volt d-c and

normally floated at about 140 volt, with occasional fluctuations between 100-145

volt.

4.2. Circuit Breaker

4.2.1. Type

4.2.1.1. The circuit breaker shall be SF6 gas single pressure type suitable for d-c trip and

automatic high speed re-closing service.

4.2.2. Ratings

4.2.2.1. Rated Frequency, Hertz 60

4.2.2.2. Voltage Ratings

4.2.2.2.1. Nominal voltage class, kV 161

4.2.2.2.2. Rated maximum voltage line to line, kV, rms 169

4.2.2.3. Current Ratings

4.2.2.3.1. Rated continuous current amperes, rms 4,000 or 2,000

as shown on

Single-Line Diagram

4.2.2.3.2. Rated short-circuit current at rated maximum

voltage, amperes, rms 50,000 40,000

4.2.2.3.3. 3-second short-time current carrying capability,

amperes, rms 50,000 40,000

4.2.2.3.4. Closing and latching capability, amperes, rms 80,000 64,000

4.2.2.3.5. Line charging current switching capability,

amperes, rms 90 90

4.2.2.4. Interrupting Ratings

4.2.2.4.1. Maximum symmetrical interrupting capability for standard duty cycle of

CO + 15 sec. + CO, amperes, rms 50,000 40,000

4.2.2.4.2. Maximum symmetrical interrupting capability for re-closing duty cycle of

O + Zero sec. + CO, amperes, rms 50,000 40,000

4.2.2.5. Rated Interrupting Time, cycle (Based on 60 Hertz) 3 3

4.2.2.6. Rated Permissible Tripping Time Delay, sec. 1 1

4.2.3. Circuit Breaker Capabilities

4.2.3.1. Each circuit breaker shall be capable of performing within the applicable rating and

operating characteristics limits established in accordance with ANSI Standards

C37.04 for two (2) standard operating duty cycles of close-open (CO) plus 15

seconds plus close-open (CO), each separated by at least 15 minutes. Each breaker

shall also be designed and constructed for automatic re-closing from remote device

at a duty cycle of open (O) plus 20 cycles plus close-open (CO) at rated interrupting

capability.

4.2.3.2. Each circuit breaker shall be capable of completely interrupting all phases of a 60 Hz,

three phase circuit when faulted by any type fault, from zero to 100 percent of rated

short-circuit current at rated maximum voltage or related required capability in three

(3) cycles, after which time there shall be no recurrence of main current flow. The

interrupting time for a three-phase close-open (CO) operation at the specified duty

shall not exceed the rated interrupting time by more than 1/2 cycles.

4.2.3.3. The breaker shall be capable of interrupting purely charging current of transmission

lines and the magnetizing current of transformer. For both of these duties, the time

required for interruption shall not exceed three (3) cycles. In the performance of

these duties, the breaker shall be re-strike free.

4.2.3.4. The breaker shall allow three-phase re-closing for all faults. Taiwan Power Company

will provide appropriate external relaying.

4.2.3.5. Any device required to function as a voltage limiter or to damp out oscillation or

re-strikes prior to complete interruption of the current shall have a life expectancy

not less than that of the rest of the circuit breaker as a whole.


4.2.4.1. The circuit breaker shall withstand the following test voltage at the normal operation

gas pressure.

4.2.4.1.1. Low-frequency withstand voltage, dry, one-minute, kV, rms 365

4.2.4.1.2. Impulse withstand voltage, 1.2×50 s full wave, kV, crest 750

4.2.4.1.3. 2-microsecond chopped wave withstand voltage, kV, crest 968

4.2.4.1.4. 3-microsecond chopped wave withstand voltage, kV, crest 862

4.2.5. Operating Requirement and Control

4.2.5.1. Each circuit breaker shall be provided with all necessary mechanisms, fittings,

auxiliaries, with electrical, mechanical, pneumatic or hydraulic connections required

for the satisfactory operation of the breaker. The control circuit shall be in

accordance with Taipower Drawing No. TDS3-15-6093, Rev. a, dated 78-12-4.

4.2.5.2. Interlocks shall be provided to prevent hunting and other dangerous or undesirable

operations of the circuit breaker.

4.2.5.3. The control circuits shall be electrically trip free and spring, hydraulically or

pneumatically trip free and non-pumping, and shall be such that only momentary

actuation of a control device is necessary to obtain a complete operation. The

tripping control circuit shall be such that the TPC may, with the addition of suitable

relays and connection to the proper terminals, operate the breaker with three-phase

trip. The closing control circuit shall be suitable for three-pole single-shot adjustable

re-closing as specified in the Paragraph 4.2.3 CIRCUIT BREAKER CAPABILITIES.

All control coils shall be so rated that they will not overheat during five (5)

immediately successive close-open operations. The closing control circuit

components shall be so rated that they will not be damaged if the circuit is energized

for five minutes.

4.2.5.4. The total operating current of the tripping coils or closing coils, shall be less than 15

amperes at DC 125V.

4.2.5.5. The operating mechanism shall be suitable for three-phase, 20-cycle re-closing

(re-closing relays shall not be supplied), with a re-closing duty cycle of:

Open + 20 cycles + CO + 3 minutes + CO

4.2.5.6. Control Voltages

4.2.5.6.1. Closing control, d-c 125V

4.2.5.6.2. Tripping control, d-c 125V

4.2.5.6.3. Heater, a-c, 60 Hz, single phase 220V

4.2.5.6.4. Motor supply, a-c, 60 Hz., three-phase 220V

4.2.5.6.5. The circuit breaker shall be capable of opening and closing throughout the

appropriate control voltage ranges as follows:

Closing voltage range 90~140V

Tripping voltage range 70~140V

4.2.5.7. Two electrically independent tripping coils and all necessary circuits including

pressure switches and reset devices shall be provided, one for primary solid-state

protective relaying and the other one for conventional E/M protective relaying. Each

circuit shall be capable of operating normally with or without any voltage on the

other circuit.

4.2.5.8. The control circuit of breaker shall be automatically lock out and the breaker can not

be closed or open when the pressure of operating mechanism or SF6 gas in any or all

phases drops below the value necessary for operating the breaker.

4.2.5.9. Extra auxiliary switches shall be provided for each operating mechanism, in addition

to those normally required for breaker operation. Each switch shall be provided with

at least six (6) normally open and six (6) normally closed contacts. Switch contacts

shall have a voltage rating not less than 125 volts d-c and continuous current rating

not less than 15 amperes.

4.2.5.10. A manually operated tripping device shall be provided for each breaker. This device

shall be so located that it can be operated without opening the doors of the

mechanism housing and shall trip all three phases of the breaker. Operation of the

manual trip shall block the breaker’s close and re-close features units such a

capabilities are manually restored.

4.2.6. Construction

4.2.6.1. SF6 Gas Circuit Breakers

4.2.6.1.1. The circuit breakers shall be provided with a closed SF6 gas system for

insulation and for arc quenching. All chambers containing the SF6 gas shall be

hermetically sealed to prevent leakage of the gas to atmosphere.

4.2.6.1.2. Live parts shall be mounted within a gas tight and earth metal cylindrical

enclosure. SF6 gas shall be used as the insulation medium between live parts

and the earth cylinder. A homogeneous uniform electric field shall be

maintained within the insulation gas. Supports shall be epoxy resin insulators

complying with Paragraph 4.1.8.

4.2.6.1.3. Voltage distribution across the breaks of each circuit breaker pole shall be

controlled in accordance with Paragraph 4.2.6.2.

4.2.6.1.4. The operation of all the interrupters of a circuit breaker shall be simultaneous.

Suitable interlocks and other safety devices shall be provided to prevent

non-simultaneous or other undesirable operation.

4.2.6.2. Voltages Distribution Across Breaks

4.2.6.2.1. The total recovery and the transient recovery voltage across a pole of a circuit

breaker with multiple breaks shall be as evenly distributed across the breaks of

the pole as possible under all operating conditions. If necessary the circuit

breaker shall be provided with voltage grading capacitors, resistors or a

combination of capacitors and resistors connected in parallel with the breaks.

4.2.6.3. Contacts of Circuit Breaker

4.2.6.3.1. The contracts shall be designed to have adequate thermal and current-carrying

capacity for carrying full-rated current without exceeding the allowable

temperature rise as specified in Paragraph 4.1.5. They shall be designed to

have long life so that frequent replacement or maintenance will be unnecessary.

The surfaces of either or both, moving and stationary arcing contracts which

are exposed directly to the arc shall be forced with suitable arc resisting

material.

4.2.6.4. Operating Mechanisms:

The types of operating mechanisms used differ in the means used for obtaining the

power required to close a circuit breaker. The following general features apply to all

types.

4.2.6.4.1. The operating mechanism shall operate to open and close all three poles of the

breaker essentially simultaneously for three-phase operation. The mechanism

shall consist of a spring-operated, a pneumatically-operated or a

hydraulically-operated device mounted in a weatherproof, dustproof housing of

steel not less than 2.6 mm (No.12 US gauge). The housing shall have a

removable conduit plate or sufficient conduit knockouts for bring in conduit.

4.2.6.4.2. Access to the control or operation mechanism shall be through hinged doors of

the housing or cabinet. Provisions shall be made for locking the housing doors

with a padlock.

4.2.6.4.3. Each breaker shall close from the fully opened position when energized at

normal control voltage in not more then 20 cycles, on a 60 Hz. basis, from the

instant the control circuit is energized until the main contacts touch. This

requirement shall not apply in a re-closing cycle.

4.2.6.4.4. One or more heaters with humidity controller shall be supplied to maintain the

internal relative humidity of operating mechanism cubicles or housings below

60 . These heaters shall be installed in the lower portion of the cabinet with

electrical connections below the heaters to minimize deterioration of insulation

of supply wire. Heaters shall be encased in sheath having high electrical

insulating properties. The surface temperature of the heaters shall be restricted

to a value which will not shorten the life of the heater sheaths or other circuit

breaker components in the housing.

A separate two-pole, single-throw no-fuse breaker shall be provided for each

heater circuit. Heaters shall be suitable for continuous operation at 220 volts

a-c. The heater circuit shall be independent of any other circuit.

4.2.6.4.5. Each operating mechanism shall be designed for the duty cycle involved and

all working joints throughout shall be made of corrosion-resistant materials.

All bearings which require periodic greasing shall be provided with suitable

means of introducing the lubricant. Where periodic packing of the bearings is

recommended, the bearings shall be such as to facilitate disassembly prior to

packing. The mechanism shall be strong rigid, positive, quick in action, not

subject to rebound or to critical adjustment and shall be readily accessible for

maintenance. The design shall be such that five immediately successive

close-open operations will produce no overheating of electrical parts.

4.2.6.4.6. For purposes of inspection and adjustment means shall be provided for manual

closing and opening of the circuit breaker at a conveniently accessible place.

The maintenance closing and opening device shall be such that the contacts

can be operated slowly by one man to adjust the circuit breaker when it is not

in service.

4.2.6.4.7. Pneumatic Mechanism

4.2.6.4.7.1. If the GIS in installed outdoors, each circuit breaker’s pneumatic

closing mechanism (if furnished) shall be provided with its own

individual air compressor, air tank, necessary control, piping and

associated equipment (pressure gauge, safety valves, pressure switches,

etc.).

4.2.6.4.7.2. If the GIS is installed indoors, each set shall be provided with a central

air compressor plant, and each circuit breaker shall be provided with its

own operating mechanism with air tank and necessary control. The air

pipe and accessories required for air piping between compressor plant

and each circuit breaker shall be provided by seller.

The central air compressor plant shall consist of at least two (2) air

compressor units, air storage tanks, necessary control, piping, valves,

pressure gauge and pressure switch. The air tank may be located within

the enclosing housing or adjacent to it.

4.2.6.4.7.3. The air compressor shall have a compressor motor, 220 volts

alternating current three phase.

4.2.6.4.7.4. The air compressor and motor shall be of sufficient size to charge the

storage system from its minimum operating pressure to normal

operating pressure in 30 minutes for individual air compressor plant. If

central air compressor plant is supplied, the recharging time shall be

within one (1) hour after tripping operation of all circuit breakers

simultaneously or from the minimum operation pressure. It shall also

be capable of charging the storage system from atmospheric pressure to

normal pressure in 60 minutes for individual air compressor plant or 4

hours for central air compressor plant. The air compressor shall be

equipped with a suitable filter for dirt removal and an automatic control

to maintain normal operating pressure.

4.2.6.4.7.5. If individual air compressor plant is supplied, the air storage tank shall

be of sufficient size to permit closing the circuit breaker at least five (5)

times without compressor operation. If central air compressor plant is

supplied, each circuit breaker shall be provided with a sufficient size of

storage tank to permit three (3) close-open operations without

replenishment from central air tank. However, the air storage tank of

the central air compressor plant shall have capacity to permit two (2)

circuit breakers to perform additional two (2) close-open (CO)

operations without compressor operation. A manually operated valve

shall provide for draining condensed moisture and oil from the lowest

point of the air system. The air tank shall be equipped with a safety

relief valve set at approximately 20 percent above the normal operating

pressure. A low pressure alarm switch set at approximately 10 percent

above the minimum operating pressure and a low pressure lockout

switch to prevent the operation of mechanism shall be provided. These

features may be combined into one device.

4.2.6.4.7.6. Suitable means shall be provided between the air tank and mechanism

to prevent operation of the mechanism pneumatically when

maintenance work is being done. This should shut off the air supply

and may be arranged to exhaust the air from the mechanism.

4.2.6.4.8. Hydraulic Mechanism

4.2.6.4.8.1. Each circuit breaker’s hydraulic closing mechanism shall be provided

with its own individual pump, accumulators, necessary control, piping,

pressure gauge, pressure switches and valves.

4.2.6.4.8.2. The pump and associated motor shall be of sufficient size to charge the

accumulator from its minimum hydraulic operating pressure to normal

hydraulic operating pressure within five (5) minutes. The hydraulic

pump shall be equipped with an automatic control to maintain normal

hydraulic operating pressure. A manually operated hydraulic pump shall

be provided for charging the hydraulic pressure manually in case loss of

power supply.

4.2.6.4.8.3. The accumulator shall be of sufficient size to permit the circuit breaker

to perform an operating sequence Specified in Paragraph 4.2.5.5

without operation of the hydraulic pump. The hydraulic system shall be

equipped with a safety relief valve set at approximately 20 percent

above the normal hydraulic operating pressure.

4.2.6.4.8.4. An alarm pressure switch shall close when the hydraulic pressure drops

to a value approximately 10 percent above the minimum operating

pressure of the mechanism. A lockout pressure switch shall prevent the

mechanism from attempting a closing operation when the hydraulic

pressure is too low to complete the operation. (These functions may be

combined into one device.)

4.2.6.5. Spring Operated Mechanism

4.2.6.5.1. If spring operated mechanism is supplied, the spring shall be charged by a

motor. The motor and its control circuits shall be so constructed as to

automatically fully charge the closing spring within fifteen (15) seconds after

each closing operation so that the breaker can perform the re-closing duty cycle

specified. The spring compressing motor shall be rated three phase 220V, 60

Hertz. The motor and all necessary accessories for satisfactorily performing

this function shall be provided with the breaker, suitably mounted and

completely wired. Means shall be provided for charging and release the spring

manually. The control circuit shall include means to prevent damage to the

closing relays or other components of the control circuit in case of loss of the

power supply or failure of the spring rewinding function.

4.2.6.5.2. In case loss of power supply, the operating mechanism shall be capable of

performing the operation of open-close-open circuit breaker is in closed

position.

4.2.6.5.3. On stored-energy mechanism, a position indicator shall indicate the state of

energy in the storage device. The word “charged” in black print on a yellow

background shall be used; “discharged” in black print on a white background

may be used where applicable.

4.2.6.5.4. Suitable means shall be provided to prevent operating the mechanism when

maintenance work is being done.

4.2.7. Accessories

4.2.7.1. Each circuit breaker shall be furnish with all necessary accessories, but not be

limited to the following:

4.2.7.1.1. Position Indicator:

A semaphore signal and a pair of position indicating lamps (red and green) to

indicate the open and closed positions of each individual phase of the breaker

contacts shall be mounted in such position that it will plainly visible to a

person standing on the ground (for example on top of control cubicle). If the

semaphore is inside the control cubicle, it shall be readily visible through an

appropriate window. The indicating lamps shall be supplied from the 110 volt

a-c receptacle circuit. A mechanical position indicator shall also be provided in

the operating mechanism housing.

4.2.7.1.2. Operation Counter:

An operation counter shall be furnished to indicate the total number of

operations of the circuit breaker. The counter shall register on tripping

operation only, and shall remain in operative during the closing stroke of the

breaker.

4.2.7.1.3. Supply Switches:

Separate circuit breakers shall be provided in the control cubicle for

disconnection and protection of the convenience outlet circuits.

4.2.7.1.4. Other accessories in accordance with manufacturer’s standard.

4.3. Disconnecting Switch

4.3.1. General Requirement

4.3.1.1. Disconnecting switches shall be triple-pole, single throw, electrically or

pneumatically and manually operated type.

4.3.1.2. Disconnecting switches shall be provided for isolating of circuit breakers, current

and power circuits and they shall be locate electrically in accordance with the

“Single Line Diagram” as specified in “Invitation to Bid.”

4.3.1.3. The disconnecting switches shall be capable of making and breaking the transformer

magnetizing current, charging current, and bus loop current. Contacts parts of the

disconnecting switches shall be capable of switching loop current more than 100

times.

They shall be fully interlocked with the circuit breakers to ensure that they can only

be operated under no load. However, for double bus system, provision shall be made

for de-interlocking with the circuit breaker before changing the bus, so that while

one of bus bar disconnecting switches is closed, the another one will be able to open

satisfactorily without opening the circuit breaker.

4.3.2. Rating

4.3.2.1. Rated frequency, Hertz 60

4.3.2.2. Rated voltage, kV, rms (L line to line) 161

4.3.2.3. Rated current, amperes, rms

4.3.2.3.1. Continuous current 4,000 or 2,000

as shown on

Single-Line Diagram

4.3.2.3.2. Momentary current (Asy.) 80,000 64,000

4.3.2.3.3. 3-second current 50,000 40,000


4.3.3.1. The disconnecting switches shall withstand the following test voltage at the normal

operation gas pressure.

4.3.3.1.1. Low-frequency withstand voltage, one-minute, kV, rms 365

4.3.3.1.2. Impulse withstand voltage, 1.2×50 s full wave, kV, crest 750

4.3.3.1.3. Low-frequency withstand voltage, across open gap,

one-minute, kV, rms 425

4.3.3.1.4. Impulse withstand voltage, across open gap, 1.2×50 s

full wave, kV, crest 825

4.3.4. Design of Disconnecting Switches

4.3.4.1. The GIS shall be provided with single or double break isolators incorporation

adequate isolating clearances to guarantee insulation level as specified in Paragraph

4.3.3 when the contacts are opened. The insulation medium between live parts and

earth between the opened contacts shall be SF6 gas.

4.3.4.2. All live metal parts shall be mounted in a gas-tight earthed non-magnetic metal

cylindrical enclosure, supported by conical epoxy resin insulators and insulated by

SF6 gas in a similar manner as Paragraph 4.1.8 and 4.2.6.1.2.

4.3.5. Operating Mechanisms of Disconnecting Switches

4.3.5.1. The disconnecting switches shall be operated electrically or pneumatically and

manually. They shall be fully interlocked with circuit breakers to ensure that they

can only be operated when the associated main circuit is not energized. For double

bus bar system, they shall be able to operate in accordance with the requirement

specified in Paragraph 4.3.1.3. The disconnecting switches shall also be fully

interlocked with earth switches to prevent from unauthorized operation.

4.3.5.2. Each three phase disconnecting switch shall be provided with its own motor, control

gear, facilities for connecting to a remote control panel and a local/remote control

selector and shall be rated a-c, 220V, 3-phase, 60 Hertz or d-c 125V.

4.3.5.3. Extra auxiliary switches shall be provided for each operating mechanism, in addition

to those normally required for disconnecting switch operation. Each switch shall be

provided with at least six (6) normally open and six (6) normally closed contacts.

Switch contacts shall have a voltage rating not less than 125 volts d-c and a

continuous current rating not less than 15 amperes.

4.3.5.4. The position indicator to indicate the open and closed positions of the disconnecting

switch shall be furnished. A pair of indicating lamps shall also be provided on local

control cubicle.

4.3.5.5. The operating mechanism shall be enclosed in a water and dust proof metal housing.

Space heater with humidity controller shall be provided to maintain the internal

relative humidity of housing below 60 .

4.4. Earth Switches

4.4.1. The earth switches shall be located on both sides of each circuit breaker and on each end of

the circuit as shown on the “Single Line Diagram” specified in “Invitation to Bid.”

4.4.2. All earth switches shall be electrically or pneumatically and manually operated. The earth

switches on line side shall be high speed making proof type with a making capability equal

to circuit breaker closing capability.

4.4.3. The operating mechanism shall be enclosed in waterproof and dustproof metal housing. A

mechanical position indicator and space heater with humidity controller to maintain the

internal relative humidity below 60 shall be provided in the housing.

4.4.4. The earth switches shall be fully interlocked with the associated circuit breakers and

disconnecting switches to prevent from earth the live parts.

4.4.5. Extra auxiliary switches shall be provided for each operating mechanism, in addition to

those normally required for earth switch operation. Each switch shall be provided with at

least six (6) normally open and six (6) normally closed contacts. Switch contacts shall have

a voltage rating not less than 125 volts d-c and continuous current rating not less than 15

amperes.

4.4.6. The grounding potential parts of the earth switches shall be connected to the earth terminals

fitted to the outside of the enclosure through suitable insulators which are insulated from the

enclosure for the measurement of insulating resistance or contact resistance of the circuit

breaker or disconnecting switch unit.

4.5. Potential Transformer

4.5.1. Type

4.5.1.1. The potential transformers shall be the electromagnetic type.

4.5.2. Ratings


4.5.2.2. Voltage rating:

Primary line to line voltage, kV 161

Primary line to ground voltage, kV 93

Secondary X winding, volts 115~66.4

Secondary Y winding, volts 115~66.4

Secondary Z winding, volts 66.4

4.5.2.3. The total number of secondary windings: 2 or 3

as shown on

Single-Line Diagram

4.5.2.4. Burden rating:

Total burden rating, VA 200 or 400

as shown on

Single-Line Diagram

4.5.2.5. Accuracy class:

ANSI 0.3 accuracy class for Y and Z winding, 1.2 accuracy class for X windings.

4.5.3. Connections

As shown on Single-Line Diagram.


4.5.4.1. Primary, low-frequency withstand voltage, one-minute, kV, rms 365

4.5.4.2. Primary, impulse withstand voltage,

(1.2 50 microsecond full wave), kV, crest 750

4.5.4.3. Secondary, withstand voltage, one-minute, volts, rms 2,500


4.5.5.1. The limits of observable temperature rise in potential transformers and hottest-spot

conductor when tested in accordance with their ratings shall be as following:

Ambient

Temperature

Winding

Temperature Rise

Hottest-Spot

Winding Temperature Rise

30 55 65

55 30 40

4.5.6. Design and Construction

4.5.6.1. Single phase units shall be provided for each switchgear phase and shall be

accommodated in metal enclosures with SF6 gas insulation. The potential

transformer compartments shall be fully segregated from other primary

compartments of the switchgear by means of epoxy resin insulators as specified in

Paragraph 4.1.8.

4.5.6.2. All secondary leads of potential transformers shall be brought out and connected to

the local control cubicle. All connections within the cubicle shall be made with

solder-less connectors on suitable terminal blocks. Sufficient terminals shall be

provided to permit three-phase connection and brought out to remote control room.

4.5.6.3. The neutral of each single-phase potential transformer shall be brought out through a

10 kV neutral bushing and connected to the earth terminal fitted to the outside of the

enclosure.

4.6. Current Transformer

4.6.1. Type

4.6.1.1. Current transformers shall be the bushing type mounted outside or inside the metal

enclosure.

4.6.2. Ratings


4.6.2.2. Current transformation ratio, amp.: 4000-3000-2500-1500-500/5 or

2000-1500-1200-800-500/5

as shown on

Single-Line Diagram.

4.6.2.3. The total number of CT secondary cores for each phase: 4

4.6.2.4. Accuracy class: One of the secondary cores

shall be ANSI accuracy class

0.3B-0.9 for metering, and the

others shall be C800 for relaying.


4.6.3.1. Secondary, withstand voltage, one-minute, volts, rms 2,500


4.6.4.1. The limits of observable temperature rise in current transformers and hottest-spot

conductor when tested in accordance with their ratings shall be as followings:

Ambient

Temperature

Winding

Temperature Rise

Hottest-Spot

Winding Temperature Rise

30 55 65

55 30 40

4.6.5. Design and Construction

4.6.5.1. Current transformers shall be mounted outside or inside the metal enclosure. Full

insulation between the primary conductor and current transformer core and

secondary parts shall be provided by the SF6 gas and epoxy resin supports. The

current transformer mounted outside shall be protected by metal cover.

4.6.5.2. Current transformers shall be of the multi-core design to suit the requirements as

specified in Paragraph 4.6.2 and the cores shall be made of cold-rolled

grain-oriented steel or nickel-iron alloy.

4.6.5.3. Ratio changing of current transformers shall be possible by means of taps on the

secondary windings.

4.6.5.4. All secondary and tap leads of each current transformer shall be brought out and

connected to the local control cubicle. All connections within the cubicle shall be

made with solder-less connectors on suitable short circuiting type terminal blocks.

Sufficient terminal shall be provided to permit and brought out to remote control

room.

4.7. Outdoor Bushing and Line Terminal (If required)

4.7.1. All bushings shall be SF6 gas filled or oil impregnated paper insulated type and in

accordance with ANSI Standard electrical characteristics. The construction of bushing shall

be of one piece integrally fused porcelain type, and the color shall be chocolate brown. If

bushing shall is made of multi-piece the joint shall be made of ceramic and glazed. Joint

made by resin or gasket will not be considered.

4.7.2. Bushing shall have an adequate water shed petticoat. The water-drip sheds shall have the

following dimensions.

(a) The ratio of the shed pitch to the shed projection shall not be less than 0.9.

(b) Interval of the water-drip sheds: 700-1000 mm.

(c) Projection of the water-drip shed over normal shed shall be not less than 30 mm.

(d) The detailed construction of shed form shall be in accordance with the attached drawing

No. TDS4-15-6036, dated Mar. 6, 1983.

4.7.3. All electrical and dimensional characteristics are shall be as follows:

4.7.3.1. Rated voltage class, kV, rms 161

4.7.3.2. Rated continuous current, amp., rms 4000 or 2000

as shown on

Single-Line Diagram.

4.7.3.3. Low-frequency withstand voltage, kV, rms

(a) 1 minute, dry 365

(b) 10 second, wet 315

4.7.3.4. Impulse withstand voltage, 1.2×50 s full wave, kV, crest 750

4.7.3.5. Impulse withstand voltage, chopped wave, kV, crest

(a) 3 microsecond 862

(b) 2 microsecond 968

4.7.3.6. Minimum creepage distance, mm As specified in

“Invitation to Bid”

4.7.4. Each bushing shall be provided with a 6-hole (for 4000A) or 4-hole (for 2000A) line

terminal pad drilled in accordance with NEMA Standard CC-1. The line terminal pads shall

be made of copper or high-conductivity copper or aluminum alloy. All contact surfaces shall

be completely and uniformly tinned with commercially pure tin.

4.7.5. Bushing shall meet the applicable test requirements as specified in Paragraph 6 “TYPE

TESTS AND ROUTINE TESTS.”

4.7.6. Each bushing shall be so designed that there will be no undue stressing of any parts due to

temperature changes, with adequate means provided to accommodate the expansion or

deflection of conductor and current-carrying parts resulting from overload or transient

conditions.

4.7.7. All portions of an assembled bushing, other than gaskets, which may in any way be exposed

to be atmosphere, shall be composed of completely non-hygroscopic material such as metal

or glazed porcelain.

4.8. Cable Termination

4.8.1. If the outgoings of GIS are connected with power cable, the type and size of cable will be

shown on the attached “Single-Line Diagram.” The power cables and cable terminations

will be provided by others. The connectors shield rings, cable housing, mounting plated and

accessories required for the installation of cable termination shall be provided by GIS

manufacturer. Details as attached drawings.

4.9. Terminal Blocks

4.9.1. All terminal blocks shall be of the screw type. Blocks which depend upon the spring return

of deformed metal to secure terminal leads are not acceptable. All current transformer

terminal blocks shall have shorting provisions of the positive-contact type with all parts

provided with the terminal blocks. Short-circuiting the terminals of any one current

transformer shall not short-circuit the terminals of any other current transformer. All

terminals for external connection by the TPC shall accommodate 5.5 mm2 stranded wire or

large where necessitated by current requirement.

4.10. Nameplate

4.10.1. Nameplate for circuit breaker, disconnecting switch, earth switch, potential transformer,

current transformer and operating mechanism legible from the ground, shall be installed on

each equipment. Nameplate shall be made of stainless steel and giving complete

information and rating as specified in ANSI Standard C37.04 and C37.30.

5. ACCESSORY EQUIPMENT

5.1. Blind Cover

5.1.1. The blind covers for each end shall be furnished. The covers will be used for blinding the

compartment during maintenance works.

5.2. Gas Filling Cart

5.2.1. One set of gas filling cart including cylinder, pressure reducing valve, monometer, adapter

and filling hose shall be furnished for filling SF6 gas. One end of the filling hose shall be

suitable for connection with DILO coupling tongue part No.VK/F-02/20.

The construction of gas filling cart shall be in accordance with the attached drawing No.

TDS4-15-6061A, dated Nov. 3, 1987 “Gas Filling Cart”.

5.3. Special Tools

5.3.1. One complete set of special tools and gauge necessary for erection and maintenance of the

GIS shall be furnished. The set of tools shall be provided with a steel cabinet suitable for

wall mounting and incorporated with locking facilities. A list of these special tools shall be

attached to the Bid.

6. TESTS AND REPORTS

6.1. The tests shall be done in accordance with the applicable standards of ANSI and NEMA. The Type

tests and Routine tests shall be tested at the manufacturer’s plant or at a suitable test site, by and at

the expense of the Seller. The test schedule, including the date, site and test item, shall be

submitted to Taipower and the authorized Inspector within 2 months in advance. The testing

method, wiring circuit and testing equipments for each test item shall also be clearly described in

the test schedule. The tests shall include the following.

6.2. Type Test (Design Test)

Type test shall be made the following tests on at least one circuit breaker, disconnecting switch,

earth switch, potential transformer, current transformer, bus bar, and outdoor bushing. If the same

design, insulation class and rating of the equipment to be supplied have been previously

manufactured, type test of these previously produced equipment will be acceptable. The test data

shall be complete and shall clearly state the performance data of tests.

6.2.1. No-load mechanical operation life test:

Circuit breaker, disconnecting switch, earth switch.

6.2.2. Short-time current carrying capability test:

Circuit breaker, bus bar, disconnecting switch, earth switch, current transformer, outdoor

bushing.

6.2.3. Closing and latching capability test:

Circuit breaker, making proof type earth switch.

6.2.4. Interrupting test (including normal current switching test, short-circuit current switching test

and short line fault test according to IEC Standard):

Circuit breaker.

6.2.5. Re-closing duty test:

Circuit breaker.

6.2.6. Temperature rise test:

Circuit breaker, bus bar, disconnecting switch, potential transformer, current transformer,

outdoor bushing.

6.2.7. Impulse withstand voltage test:

Circuit breaker, bus bar, disconnecting switch, potential transformer, outdoor bushing.

6.2.8. Low-frequency withstand voltage test:


outdoor bushing.

6.2.9. Partial discharge test:

Circuit breaker, bus bar, disconnecting switch, potential transformer, outdoor bushing.

6.2.10. Withstanding voltage at zero SF6 gas pressure:

Complete set of GIS.

6.2.11. Various test of potential transformer and current transformers in accordance with ANSI and

NEMA Standard.

6.2.12. Stored energy system tests:

Circuit breaker.

6.2.13. Noise level test as specified in NEMA SG-4:


6.2.14. Cantilever test:

Outdoor bushing.

6.3. Routing Tests

Each partial assemblies of the component or the complete switchgear shall be subjected to the

following tests:

6.3.1. Mechanical operation test:


6.3.2. Timing test:

Circuit breaker, disconnecting switch.

6.3.3. Low-frequency withstand voltage test:


outdoor bushing.

6.3.4. Partial discharge test:

Complete set of GIS.

6.3.5. Gas leakage test:

Circuit breaker, bus bar, disconnecting switch, earth switch, potential transformer, outdoor

bushing.

6.3.6. Contact resistance measurement test:

Circuit breaker, bus bar, disconnecting switch, earth switch.

6.3.7. Various test of potential transformer and current transformer in accordance with ANSI and

NEMA Standard.

6.3.8. Control wiring check:

Circuit breaker, disconnecting device, earth switch.

6.4. Field Tests

The following tests will be performed on complete assembled switchgear at site prior to putting

into service.

6.4.1. Mechanical operation test:


6.4.2. Timing test:

Circuit breaker, disconnecting switch.

6.4.3. Gas leakage test.

6.4.4. Gas analysis test.

6.4.5. Interlock test:


6.4.6. Contact resistance measurement test:

Circuit breaker, bus bar, disconnecting switch, earth switch.

6.4.7. Applied voltage test:

Total assembled switchgear.

The manufacturer shall furnish AC high voltage testing facilities and testing engineer for

carrying out HV test at site after erection of GIS free of charge.

Means shall be provided for dielectric test on switchgear assembly and power cable after

erection at site. Provision shall also be made for installation test bushing and for

disconnecting the cable termination from switchgear, so that they can be tested separately.

The test voltage shall be according to IEC Standard 517.

6.4.8. Partial discharge test.

6.5. If any item of equipment fails to pass any of the above tests, it shall be repaired and defective parts

replaced or redesigned, and the equipment shall then be retested without additional cost. All

additional items of equipment of the same type and rating being furnished shall conform in all

respects with the item of equipment which passed the above tests.

6.6. In the event any equipment as actually built and being furnished on this contract includes

important modifications of or significant departure from the designs on which certified design test

data have been accepted, shows evidence of failure to comply with the requirements of these

specifications, the Taiwan Power Company reserves the right to require the performance of such

tests specified herein as may be necessary to demonstrate that the equipment meets the

requirements of these specification. Such tests to be made no additional cost.

6.7. Test Reports

The Seller shall furnish twelve (12) copies of suitable bound certified test reports within thirty (30)

days after completion of the tests and they are subject to Taipower’s approval.

7. INSPECTION

7.1. All material and workmanship shall be subject to inspection, to the extent practical by an

Authorized Inspector at any time during the manufacture, assembly and testing of material or

equipment to be furnished under these specifications.

7.2. The manufacturer shall afford, without charge, all necessary and reasonable facilities required by

the Inspector for the performance of inspection required.

7.3. The Inspector shall have full access to all fabricating or manufacturing plants at all reasonable

times, to inspect all materials and fabrication as well as witness all tests.

7.4. No material or equipment shall be shipped before it has been cleared in writing by the Inspector

and the material or equipment so marked.

7.5. At time of award TPC may elect, in lieu of independent inspection, to accept “Manufacturer’s

Certificate” showing compliance to the contract specifications for the material or equipment

furnished. This certificate shall be in the nature of a signed, notarized statement or the

manufacturer, certifying that the material or equipment conforms to the contract specifications,

listing such test results as are required to be performed by the contract. “Manufacturer’s

Certificate” shall be furnished in the English or Chinese language in twelve (12) copies prior to

shipment of the material or equipment.

7.6. The acceptance of Manufacturer’s Certificate or acceptance of equipment by TPC’s Authorized

Inspector shall in no way relieve the Seller of his responsibility for furnishing material or parts

thereof according to the requirements of these specifications. Any warranties or guaranties

concerning workmanship or material on this equipment shall be in full force even though the

equipment has been accepted by the Inspector.

7.7. Independent inspection of all equipment shall be required. This inspection shall be conducted in

accordance with the provisions detailed in the Appendix I “Class B Inspection Service

Requirement” by the authorized Inspector.

8. SUPERVISION OF INSTALLATION

8.1. Taiwan Power Company (Taipower) will require the seller to furnish one or more installation

engineers to supervise and be directly responsible for the installation and operation of all GIS until

tests and adjustments are completed.

8.2. Bidder shall furnish a quotation for the supervision services which will be compared together with

the Bid. The quotation shall state the cost of travel and supervisory fee separately. Supervisory fee

shall be quoted based on the man-day rated and the estimated continuous working man-days

excluding duration of travel. The total supervisory cost including travel cost shall be subject to the

gross business receipts tax law of Taiwan, Republic of China.

8.3. The cost of travel shall include round trip air fare and all other ground travel costs from the

engineers residence to the Taiwan location and return plus incidental en-route subsistence

expenses.

8.4. Vehicles for local transportation in Taiwan shall be made available to the engineers for the work.

If such transportation is not available, the cost of which shall be reimbursable to the engineers.

Cost of local air, sail or other transportation for the engineers when performing supervision

services in Taiwan under this contract shall be paid or reimbursed by Taipower.

8.5. Living allowance shall be included in the supervision fee.

8.6. Should the supervision services be interrupted, either by Taipower’s grounds or “Force Majeure,”

for a considerable long period, Taipower may request installation engineers for repatriation.

Excessive cost of return travel will be paid by Taipower at the rate quoted by the Seller.

8.7. If the actual working man-days exceed that estimated by the Seller due to Taipower’s grounds or

“Force Majeure,” the increased supervisory fee shall be paid by Taipower at the rate specified:

Taipower shall not be required to pay for unauthorized absence and absence due to illness or

hospitalization.

8.8. Payment of total amount of supervisory fee and travel cost shall be made on actual working

man-days and numbers of return travel.

8.9. The supervision engineers shall be able to speak fluent English or Chinese. Taipower will notify

the Seller in writing at his official address or local agent a reasonable time in advance of the date

on which. Taipower desires such personnel to report for work. The work week shall be on a

forty-eight (48) hour basis, Monday through Saturday inclusive. If overtime work exceeding 8

hours per day or work on Sunday/National holiday the special rate as listed on Appendix II will be

applied.

8.10. Payment of supervisory fee and travel cost after tax shall be made in NT Dollar irrevocable L/C to

be paid against presentation of Taipower Certificate of acceptance and Seller’s invoice after

completion of services.

8.11. The installation engineer will be directly responsible for seeing that the equipment involved by

installed in accordance with the manufacturer’s recommendation and he will further be

responsible for finding and detecting defective parts, as well as pursuing the necessary corrective

measures.

8.12. The type of materials and methods used in the installation shall be as those recommended or

approved by the inspection engineer. The responsibility of the installation engineer shall apply

from such time as he arrives at the installation and shall further apply whenever installation is in

progress, whether or not he is at the installation, so long as he has been informed that the normal

inspection is starting or continuing.

8.13. Any cost incurred by the Taiwan Power Company due to over-sight or negligence of the

installation engineer shall be the responsibility of the Seller up to the time of energization.

8.14. At the completion of the energization, the Seller will be required to furnish the Taiwan Power

Company a written report, based on the installation engineer’s report to his company, outlining the

complete installation as well as any unusual conditions or special instructions.

9. SPARE PARTS

9.1. One lot of spare parts for at least five years operations, as recommended by the manufacturer shall

be quoted.

9.2. The total price for the recommended spare parts will not be included in the evaluation price. The

itemized prices for the spare parts shall be quoted separately. However, Taiwan Power Company

reserves the right to adjust the quantity of spare parts to be purchased at contract award.

10. WEIGHT LIMITATION AND TRANSPROT RESTRICTIONS

10.1. The heaviest package to be handled during transport of the equipment shall not exceed 30 metric

tons. The dimensions of the largest package shall not exceed 6.4 meters in length, 2.4 meters in

width, 3.5 meters in height.

11. PACKING AND SHIPPING

11.1. All equipment shall be suitably prepared for ocean shipment through the tropics and in a manner

that affords the necessary protection against atmospheric conditions.

11.2. All packing enclosures shall be such that slings for handling may be readily attached during

transport. Where it is unsafe to attach slings to boxes and crates, boxes and crated parts shall be

packed with slings attached to the contents. The slings shall project through the box or crate so

that other lifting attachments can be readily made.

11.3. All projecting parts shall be removed, wherever possible, and shipped separately. Where removal

is not possible, they shall be provided wherever necessary with protective steel plates of boxes.

11.4. Porcelain bushings shall be individually packed and properly supported for ocean shipment.

11.5. All boxes containing liable to corrode in a high humidity, tropical saline atmosphere shall be

double lined with suitable weather proof packing with ample supply of dehydrating agent enclosed

in such boxes to prevent condensation.

11.6. Before the equipment is dispatched from the manufacturer’s premises, the components shall be

stamped in at least two places with distinguishing marks corresponding to marks shown on

installation drawings. Components to be fitted adjacent to each other shall be so stamped to ensure

that they can be identified and correctly fitted on site.

11.7. All packages shall have at least one copy of packing list in English, enclosed, showing content.

11.8. Three copies of shipping documents, non-negotiable Bill of Lading (B/L), etc., shall be sent to

Taipower directly Via Air Mail immediately after shipment.

APPENDIX I: CLASS B INSPECTION SERVICE REQUIREMENT

The service by Inspector for “Class B” inspection shall include:

(1) Review of factory tests

Inspector shall review result of factory tests carried out by the manufacturer during manufacture to

determine whether the requirements and stipulations of specification have been complied with. If

deemed necessary Inspector may order extra tests or make special inspections to check manufacturer

data. Serious failures or non compliance with specifications with would affect delivery of equipment

shall be reported immediately to allow proper remedial measures to taken.

(2) Completion inspection and test

Inspector shall make completion inspection of all equipment prior to painting and shall witness a

final test on the completed equipment to ensure that the quality and performance of the equipment be

in compliance with the requirements and standards specified in the contract. Whenever possible the

final test shall be a test run of the equipment under different simulated working conditions. When he

is satisfied with the inspection and test, he shall make a written inspection approval to permit the

manufacturer to proceed with painting and packing.

(3) Packing

Inspector shall check the packing list against the contract. The packing of the equipment for

shipment shall be such that no damage will occur during transportation from the manufacturer’s

factories to the place of installation in Taiwan. Inspector shall inspect the packing prior to the

issuance of a certificate of inspection. Should his inspection reveal this packing to be inferior or

likely to be the cause of unreasonable risks as to damage in handling and transportation, Inspector

shall cause improvement in packing to be made and shall issue a certificate of inspection only after a

new inspection shows that the packing in entirely satisfactory. Inspector shall also see that the

markings on cases or package are in accordance with the contract requirement.

(4) Certificate of Inspection

A certificate of inspection shall be issued by Inspector when he is satisfied that equipment and

materials for which Inspector is required to render technical services has passed Inspection.

Addendum No.1 Dated Jan. 1998

TO

Specification for 161 kV Gas Insulated Switchgear Equipment

Taipower Specification No.GIS-1 Date: May, 1995

1-1 SCOPE

1-1.1 This addendum covers changes and additions to be made in Taipower Specification No.

GIS-1 to modify the general requirements and detailed dimensions of Cable Termination

in accordance with IEC-859.

1-1.2 All other paragraphs of specification No. GIS-1 not mentioned in this addendum remain

unchanged.

1-1.3 Paragraph numbers used below are the ones in the original specification or shall be added

to the original specification.

1-2 AMENDMENT

1-2.1 The drawings “GIS Type Cable Termination for 69 kV & 161 kV XLPE Cable” & “GIS

Type Cable Termination for 69 kV & 161 kV XLPE Oil-Filled Cable” list in Table of

Contents and Paragraph 3.3.1.3 & 3.3.1.4 are changed as follow:

TSCD-162-3035, IEC Pub. 859, 1986 “Typical Cable Connection Assembly For

Gas-insulating Metal-enclosed Switchgear For Rated Voltage of 72.5 kV And Above.”

1-2.2 Paragraph 4.8.1 changed to read:

If the outgoing of GIS are connected with power cables, the cable size will be shown on

the attached “Single-Line Diagram.” The power cables and cable termination will be

provided by others. The connector shield rings, cable housing, mounting plated and

accessories required for the installation of cable termination shall be provided by GIS

manufacturer. Cable housings shall be designed in accordance with the attached cable

terminal drawings. The height of the base plate of cable housing measured from the floor

of GIS room shall not be less than 1.4M.


The Bidder shall quote firm FOB price for the following items:

(1) 161kV SF6 gas insulated switchgear equipment as per attached single line diagram.

Price, US$ Item Description Q’ty

Unit Total

a Line Bay with Cable Housing

b Line Bay with Outdoor Bushing

c Transformer Bay

d Static Capacitor Bay

e Bus tie Bay

f Three-Phase Set of Bus potential

Transformer

g Central Compressor Plant, If Offered

h Arrester

Total 1 (one) set (US$)

(2) Independent inspection fee (if required) US$

(3) Supervision fee:

a. Total estimated working days. US$

b. Man-day rate. US$

c. Overtime or holiday man-hour rate. US$

d. Traveling cost. US$

(4) Spare parts:

The total price will be included for price comparison. Taiwan Power Company reserves the right to

adjust the quantity of spare parts to be purchased at contract award.

a. One (1) complete single phase set of bushing (if required). US$

b. One (1) complete three phase set of interrupter unit including contacts and

accessories required for the interrupter. Detailed construction drawing to

show each component of the interrupter unit shall be attached. US$

c. One (1) complete three phase sets of moving and stationary contacts for

circuit breaker. US$

d. One (1) complete three phase sets of moving and stationary contacts for

disconnecting switch. US$

e. One (1) complete three phase sets of closing and tripping coils for

circuit breaker. US$

f. One (1) complete three phase sets of closing and opening coils for

disconnecting switch. US$

g. One (1) complete three phase sets of closing and opening coils for earth switch. US$

h. One (1) complete three phase sets of closing auxiliary relay (52X) and

anti-pumping relay (52Y) for circuit breaker. US$

i. One (1) complete three phase set of insulating rod for circuit breaker. US$

j. Three (3) complete three phase sets of gasket. US$

k. Two (2) sets of compression motor for pneumatic operating mechanism. If

hydraulic operating mechanism is offered, pump with driving motor shall be

furnished. US$

l. Three (3) sets of suction valve for pneumatic operating mechanism. If

hydraulic operating mechanism is offered, main valve should be furnished. US$

m. Three (3) sets of piston ring for air compressor. US$

n. Three (3) sets of filter for air compressor. US$

o. Three (3) sets of SF6 gas density relay. US$

(5) Special tools:

The total price shall also be included for price comparison.

a. One (1) set of gas filling cart as specified in Paragraph 5.2. US$

b. One (1) complete set of special tools required for installation and maintenance. US$

(6) The unit price for the test bushing shall be quoted for reference but it will not be included for price

comparison. Test bushing shall include accessories required for high voltage test at site. Name of

manufacturer, drawing and technical specification of the test bushing shall be attached to the Bid.


The Bidder shall quote firm FOB price for the following items:

(1) 161kV SF6 gas insulated switchgear equipment as per attached single line diagram.

Price, NT$ Item Description Q’ty

Unit Total

a Line Bay with Cable Housing

b Line Bay with Outdoor Bushing

c Transformer Bay

d Static Capacitor Bay

e Bus tie Bay

f Three-Phase Set of Bus potential

Transformer

g Central Compressor Plant, If Offered

h Arrester

Total 1 (one) set (US$)

(2) Independent inspection fee (if required) NT$

(3) Supervision fee:

a. Total estimated working days. NT$

b. Man-day rate. NT$

c. Overtime or holiday man-hour rate. NT$

d. Traveling cost. NT$

(4) Spare parts:

The total price will be included for price comparison. Taiwan Power Company reserves the right to

adjust the quantity of spare parts to be purchased at contract award.

a. One (1) complete single phase set of bushing (if required). NT$

b. One (1) complete three phase set of interrupter unit including contacts and

accessories required for the interrupter. Detailed construction drawing to show

each component of the interrupter unit shall be attached. NT$

c. One (1) complete three phase sets of moving and stationary contacts for circuit

breaker. NT$

d. One (1) complete three phase sets of moving and stationary contacts for

disconnecting switch. NT$

e. One (1) complete three phase sets of closing and tripping coils for circuit

breaker. NT$

f. One (1) complete three phase sets of closing and opening coils for

disconnecting switch. NT$

g. One (1) complete three phase sets of closing and opening coils for earth switch. NT$

h. One (1) complete three phase sets of closing auxiliary relay (52X) and

anti-pumping relay (52Y) for circuit breaker. NT$

i. One (1) complete three phase set of insulating rod for circuit breaker. NT$

j. Three (3) complete three phase sets of gasket. NT$

k. Two (2) sets of compression motor for pneumatic operating mechanism. If

hydraulic operating mechanism is offered, pump with driving motor shall be

furnished. NT$

l. Three (3) sets of suction valve for pneumatic operating mechanism. If

hydraulic operating mechanism is offered, main valve should be furnished. NT$

m. Three (3) sets of piston ring for air compressor. NT$

n. Three (3) sets of filter for air compressor. NT$

o. Three (3) sets of SF6 gas density relay. NT$

(5) Special tools:

The total price shall also be included for price comparison.

a. One (1) set of gas filling cart as specified in Paragraph 5.2. NT$

b. One (1) complete set of special tools required for installation and maintenance. NT$

(6) The unit price for the test bushing shall be quoted for reference but it will not be included for price

comparison. Test bushing shall include accessories required for high voltage test at site. Name of

manufacturer, drawing and technical specification of the test bushing shall be attached to the Bid.

7-1

(GIS GCS GCB GIL) 104 4

1

1.1 69kV

1.2

1.3 161kV 69kV (PCH1) (TB01)

( ) (TB0A)

2

2.1

2.1.1

2.1.2

2.2

2.2.1

2.2.2

2.3

2.3.1

2.3.2

2.3.3

2.3.4 73 100

2.4

2.4.1 SF6 IEC

2.4.2

2.4.3

7-2

2.4.4 (GIL)

IEC

2.4.5 (GCS)

2.4.6 (GCB) H

2.4.7 (GCB) 2.2.2.2.4. (r.m.s.)

2.4.8

110V

220V

2.4.9

2.4.10 AC 110V AC220V

AC 110V

2.4.11 TDS3-15-60001(69kV) TDS3-15-60003(161kV)

TDS2-15-60005(345kV)

2.4.12 0.33G 0.22G

0.5G( ) 0.3G( )

O

2.4.13 69kV ( ) (HVD)

2.4.14 (SPACER)

2.4.15 60

2.4.16 ( 200 VA 75VA) (0.3 1.2)

(1 2 3) ( )

345kV 75VA

345kV/ 3 (115-66.4)V

161kV 200VA 75VA

161kV/ 3 (115-66.4)V

69kV 200VA 75VA

69kV/ 3 (115-66.4)V

2.4.17 69kV GIS

7-3

2.4.18

2.4.19 Kgf/cm2 Mpa

2.4.20 ANSI

( ) 161kV 50kA 2000A

GIS/GCS/GCB 3000/5A

(ANSI ) C800 2000/5A (ANSI )

0.3B-0.9

2.4.21 69kV (GCB) 1200A C400

2000A C800

2.4.22 GIS 13 ( PT )

4 13 8 5%

2.4.23 161kV 50kA GIS TDS4-15-65010

2.4.24

2.4.25 161kV ( GIS) 161kV 80MVAR 160A

2.4.26 161kV GIS 2.2.2.2.31~33 :

2.2.2.2.31 Reactor bank switching capability,

a. Reactor bank breaking current, A ________

b. Guaranteed number of switching reactor without requiring

maintenance. _______

2.2.2.2.32 Maximum cable-charging breaking current, A _______

2.2.2.2.33 Does the CB integrate a parallel TRV-Shaping Capacitor?

__________(Yes or No).

If yes, what is its capacitance? _________ , f.

2.4.27 161kV GCB 2.2.2.1.33~34 :

2.2.2.1.33 Reactor bank switching capability,




2.2.2.1.34 Maximum cable-charging breaking current, A _______

2.4.28 345kV ( GIS) 345kV 100MVAR 355A

2.4.29 345kV GIS/GCB 2.3.2.31~32

2.3.2.31 Reactor bank switching capability,


7-4



2.3.2.32 Maximum cable-charging breaking current, A _______

2.4.30

2.4.30.1 (345kV GCS/GCB 161kV GCS/GCB) Munsell No.5G

3/2 ( GIS) Munsell N7.0 69kV GCB/GCS

Munsell No.10BG 4/2 Munsell

No.5G 3/2

2.4.30.2 (LCC) / CNS 1244

(Z06 )

2.4.30.3 ( 85% )

2.4.30.4 (LCC) (

) 40 m

120 m CNS

10756-1 10757 8886

(1 ) (300

) (300 ) (500 )

2.4.30.5

2.4.31 GIS

2.4.32 ( ) 161kV GIS CB

(TRV-Shaping Capacitor) BPT

(ATP/EMTP ) BPT 161kV GIS

BPT

2.4.33 (TDT-162-2026D, 2027E) IEC-60859(TSCD-162-3035) (

PCH1) IEC

1.4M

2.4.34 TB0A

2.4.35

2.4.36 ( )

GIS ( )

7-5

2.4.37 GIS/GCS/GCB

2.4.38 GIB/GIL

2.4.39 69/161kV GIS IEC-61128

2.4.40 GIS/GCS/GCB/GIL SF6 0.5%

2.4.41 GIS/GCS/GCB/GIL SF6

2.4.42 345kV GIL (gas compartment) 20

12

2.4.43 345kV GIS GCS GIL

2.4.44 GIS A1 1 5

7.5R 5/14

SF6 5Y 8.5/4

10YR 8/14

2.5G 4/10

10B 7/8

SF6

2.4.45 (Gas Filling Cart)

One set of gas filling cart including cylinder, pressure reducing

valve, monometer, adapter and filling hose shall be furnished for

filling SF6 gas.The construction of gas filling cart shall be in

accordance with the attached drawing No. TDS4-15-6061A, dated Nov.

suitable for connection with DILO coupling tongue part No.VK/F-

02/20 or equivalents.

2.4.46 69/161/345kV GIS SF6 5%

2.4.47 69/161/345kV GIS GCB GCS LCC LCC

2.4.48 GIS/GCS/GCB/GIL (

)

2.5

2.5.1

7-6

2.5.2

2.5.3

2.5.4

2.5.5 (GIS) (GCB/GCS)

GIL

2.5.6 (

)

2.5.7 CT PT

2.5.8 GIS CT PT CT

2.5.9 B

2.5.10

2.5.11 345kV GIL (POST) AC

1 10 ( 1

1 1 ) (PT)

GIL

2.6 ( )

2.6.1

( )

2.6.2

2.6.3

2.6.4

7-7

2.6.5

2.6.6

2.6.7

2.7 ( )

2.8

2.8.1

2.8.2

2.8.3 7.5m 2.5m 3.9m 30

technical specification for 161 kv gas … · “gis type cable termination for 69 kv & 161 kv...

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