ha 35 41 2003 en - home - hem - siemens i sverige - … circuit-breaker switchgear type nxplus c up...

Fixed-Mounted Circuit-BreakerSwitchgear Type NXPLUS Cup to 24 kV, SF6-Insulated

Medium-VoltageSwitchgear

Catalog HA 35.412003

Invalid:Catalog HA 35.41 · 2001

Fixed-Mounted Circuit-Breaker Switchgear Type NXPLUS C up to 24 kV, SF6-Insulated

2 Siemens HA 35.41 · 2003

Contents Application

Types

© Siemens AG 2003

Page

Application

Types, typical uses,ratings 2 to 4

Requirements

Features, safety, technology 4 and 5

Technical Data

Electrical data 6 and 7Room planning 8Shipping data 9

Dimensions

Front views, sections,floor openings, fixing points 10 to 12

Product Range

Single-busbar panels 13 to 15Double-busbar panels 16

Design

Basic panel design 17

Components

Vacuum circuit-breaker 18 and 19Three-position switch 20 and 21HV HRC fuse assembly 22 and 23Vacuum contactor, motor protection 24Busbars 25Current and voltage transformers 26 and 27Panel connection 28 to 30Indicating and measuring equipment 31 to 33

Standards

Standards, specifications, guidelines 34 and 35

Notes

35

Fixed-mounted circuit-breaker switchgearNXPLUS C is a factory-assembled, type-tested,metal-enclosed, metal-clad,SF6-insulated switchgearfor single-busbar anddouble-busbar applicationsand indoor installation.

R-HA

35-1

05ep

s

Circuit-breaker panel (example)

3Siemens HA 35.41 · 2003 3


Typical uses

Application

ApplicationPublic power supply system

NXPLUS C switchgear20 kV (example)

R-HA

35-1

08ep

s

R-HA

35-1

08ep

s

R-HA

35-1

07ep

s

R-HA

35-1

06ep

s

R-HA35-109 eps

ApplicationIndustry

ApplicationIndustry


4 Siemens HA 35.41 · 2003

Typical uses · Ratings Features

Application Requirements

Fixed-mounted circuit-breaker switchgearNXPLUS C is used in transformerand switching substations, e.g., in

■ Power supply companies■ Power stations■ Cement industry■ Automobile industry■ Iron and steel works■ Rolling mills■ Mining industry■ Textile, paper and food industries■ Chemical industry■ Petroleum industry■ Pipeline installations■ Offshore installations■ Electrochemical plants■ Petrochemical plants■ Shipbuilding industry■ Diesel power plants■ Emergency power supply installations■ Lignite open-cast mines■ Traction power supply systems

Environmental independence

Welded switchgear vesselsmade of stainless steel withoutseals make NXPLUS C switch-gear

• Insensitive to aggressiveambient conditions such as

– Salt water– Air humidity– Dust– Temperature

• Hermetically tight to ingressof foreign bodies such as

– Dust– Dirt

• Independent of site altitude

Compact design

Thanks to the SF6-insulation,compact dimensions arepossible

Thus,

• Existing switchgear roomscan be used effectively

• New constructions cost little

• Costly city-area space is saved

Maintenance-free design

Switchgear vessels designedas sealed pressure systems,maintenance-free switchingdevices and enclosed cableplugs ensure

• Maximized power supplyreliability

• Personnel safety

• Sealed-for-life design accord-ing to IEC 60 298 (sealedpressure system)

• Installation, operation, exten-sion and replacement with-out SF6-gas work

• Reduced operating costs

• Cost-efficient investment

• No maintenance cycles

Innovations

The use of digital secon-dary systems and com-bined protection andcontrol devices ensure

• Clear integration in pro-cess control systems

• Flexible and highly sim-plified adaptation to newsystem conditions andthus to cost-efficientoperation

Electrical data (maximum values) and dimensions

Rated voltage kV 7.2 12 15 17.5 24

Rated frequency Hz 50/60 50/60 50/60 50/60 50/60

Rated short-duration power-frequency withstand voltage

kV 20 28 36 1) 38 1) 50

Rated lightning impulsewithstand voltage

kV 60 75 95 95 125

Rated peak withstand current kA 80 80 80 63 63

Rated short-circuit makingcurrent

kA 80 80 80 63 63

Rated short-timewithstand current 3 s

kA 31.5 31.5 31.5 25 25

Rated short-circuit breakingcurrent

kA 31.5 31.5 31.5 25 25

Rated normal current of busbar A 2500 2500 2500 2500 2500

Rated normal current offeeders

A 2500 2500 2500 2000 2000

Width mm 600 2) 600 2) 600 2) 600 2) 600 2)

Depth – without pressurerelief duct at the rear

– with pressurerelief duct at the rear

mm

mm

1100

1225

1100

1225

1100

1225

1100

1225

1100

1225

Height mm 2250 2250 2250 2250 2250

1) 42 kV according to someinternational requirements

2) 1200 mm for rated normalfeeder currents of 2000 A,2300 A and 2500 A

5Siemens HA 35.41 · 2003


Personal safety

• Safe-to-touch and hermetical-ly sealed primary enclosure

• All high-voltage parts includ-ing the cable terminations,busbars and voltage trans-formers are surrounded byearthed layers or metal enclo-sures

• Capacitive voltage detectionsystem for verification of safeisolation from supply

• Operating mechanisms andauxiliary switches safely ac-cessible outside the primaryenclosure (switchgear vessel)

• Protective system interlock toprevent operation when theswitchgear enclosure is open

• Standard degree of protec-tion IP 65 for all high-voltageparts of the primary circuit,IP 3XD for the switchgearenclosure according toIEC 60 529 and VDE 0470Part 1

• High resistance to internalarcs by logical mechanicalinterlocks and testedswitchgear enclosure

• Arc-fault tested panelsaccording to IEC 60 298 andVDE 0670 Part 6, Criteria 1to 6

• Logical mechanical interlocksprevent maloperation

• Make-proof earthing bymeans of the vacuum circuit-breaker

Security of operation

• Hermetically sealed primaryenclosure independent ofenvironmental effects (dirt,moisture and small animals)

• Maintenance-free in anindoor environment(IEC 60 694 and VDE 0670Part 1000)

• Operating mechanisms ofswitching devices accessibleoutside the primary enclo-sure (switchgear vessel)

• Metal-enclosed, plug-in in-ductive voltage transformersmounted outside the gascompartments

• Ring-core current transform-ers mounted outside the gascompartments

• Complete logical mechanicalinterlocking system

• Welded switchgear vessels,sealed for life

• Minimum fire load

• Type and routine-tested

• Standardized, NC productionprocesses

• Quality assurance in accord-ance with DIN EN ISO 9001

• More than 300,000switchgear panels of Siemensin operation worldwide formany years

• Option: Aseismic design

Reliability

• Type and routine-tested

• Standardized, NC productionprocesses

• Quality assurance in accord-ance with DIN EN ISO 9001

• More than 300,000switchgear panels of Siemensin operation worldwide formany years

General

• Three-pole enclosure of theprimary part consisting of aswitchgear vessel made ofstainless steel

• Insulating gas SF6

• Three-position switch asbusbar disconnector andfeeder earthing switch

• Make-proof earthing bymeans of the vacuum circuit-breaker

• Compact dimensions due toSF6-insulation

• Hermetically welded switch-gear vessel made of stainlesssteel without seals

• Single-pole, solid-insulated,screened busbars, plug-in type

• Cable connection with out-side-cone plug-in system, orfor connection of solid-insu-lated bars

• Wall-standing or free-stand-ing arrangement

• Cable connection access fromfront or rear

• Installation and extension ofexisting switchgear on bothsides without gas work andwithout modification of exist-ing panels

Interlocks

• According to IEC 60 298 andVDE 0670 Part 6

• Logical mechanical interlocksprevent maloperation

• Circuit-breaker or contactorcan only be operated withthree-position switch in endposition and operating leverremoved

• Three-position switch-discon-nector not interlocked in cir-cuit-breaker panels£ 630 Aand in switch-disconnector,contactor, ring-main andmetering panels due to itsown switching capacity

• Three-position disconnectorinterlocked against the cir-cuit-breaker in circuit-breakerpanels > 630 A and in bussectionalizers with one panelwidth

• Cable compartment cover(access to HV HRC fuses)always interlocked againstthe three-position switch-disconnector in panels withHV HRC fuses (switch-discon-nector, metering andcontactor panels)

Safety

• Option: Three-positionswitch-disconnector in circuit-breaker panels£ 630 A canonly be operated with circuit-breaker in OPEN position

• Option: Cable compartmentcover interlocked against thethree-position switch

• Option: Electromagneticinterlocks

• Option: Actuating openingscan be locked with padlocks

Modular design

• Panel replacement possiblewithout SF6-gas work

• Low-voltage compartmentcan be removed, plug-in buswires

Instrument transformers

• Current transformers notsubjected to dielectric stress

• Easy replacement of ring-corecurrent transformers

• Metal-enclosed, plug-in anddisconnectable voltage trans-formers

Vacuum circuit-breaker

• Maintenance-free undernormal ambient conditionsaccording to IEC 60 694 andVDE 0670 Part 1000

• No relubrication or readjust-ment

• Up to 10,000 operatingcycles

• Vacuum-tight for life

Secondary systems

• Standard protection,measuring and controlequipment

• Option: Digital multifunctionprotection relay with inte-grated protection, control,communication, operatingand monitoring functions

• Can be integrated in processcontrol systems

Technology

Requirements


6 Siemens HA 35.41 · 2003

Electrical data, filling pressure, temperature for single-busbar switchgear

Technical Data

Commonelectrical data,filling pressureandtemperature

Rated insulation level Rated voltage Ur kV 7.2 12 15 17.5 24Rated short-duration power-freq. withstand voltage Ud:– phase-to-phase, phase-to-earth, open contact gap kV– across the isolating distance kV

2023

2832

36 1)39 1)

38 1)45 1)

5060

Rated lightning impulse withstand voltage Up:– phase-to-phase, phase-to-earth, open contact gap kV– across the isolating distance kV

6070

7585

95110

95110

125145

Rated frequency fr 50/60 HzRated normal current Ir

2) for the busbar A 2500 2500 2500 2500 2500Rated filling pressure pre

3) 150 kPa (absolute) at 20 °CMinimum operating pressure pme

3) 130 kPa (absolute) at 20 °CAmbient temperature – 5 °C to +55 °C

Panel dataCircuit-breakerpanel630 A

Rated normal current Ir2) A 630 630 630 630 630

Rated short-timewithstand current Ik

for switchgear with tk = 1 s up to kA 20 25 20 25 20 25 20 25 20for switchgear with tk = 3 s up to kA 20 – 20 – 20 – 20 – 20

Rated peak withstand current Ip up to kA 50 63 50 63 50 63 50 63 50Rated short-circuit making current Ima up to kA 50 63 50 63 50 63 50 63 50Rated short-circuit breaking current Isc up to kA 20 25 20 25 20 25 20 25 20

Electrical service life ofvacuum circuit-breakers

at rated normal current 10,000 operating cyclesat rated short-circuit breaking current 50 breaking operations

Circuit-breakerpanel and bussectionalizer1000 A1250 A2000 A2300 A2500 A

Rated normal current Ir2) A

AAAA

10001250200023002500

10001250200023002500

10001250200023002500

100012502000

100012502000


for switchgear with tk = 1 s up to kA 31.5 31.5 31.5 25 25for switchgear with tk = 3 s up to kA 31.5 31.5 31.5 25 25

Rated peak withstand current Ip up to kA 80 80 80 63 63Rated short-circuit making current Ima up to kA 80 80 80 63 63Rated short-circuit breaking current Isc up to kA 31.5 31.5 31.5 25 25



Switch-disconnectorpanel(with HV HRCfuses)

Rated normal current Ir2) for feeder 4) A 630 630 630 630 630



Rated peak withstand current Ip4) up to kA 80 80 80 63 63

Rated short-circuit making current Ima4) up to kA 80 80 80 63 63

Dimension ”e” of HV HRC fuse links mm 292 5) 292 5) 442 442 442

Ring-mainpanel(switch-disconnectorpanel withoutHV HRC fuses)

Rated normal current Ir2) for feeder A 630 630 630 630 630


for switchgear with tk = 1 s up to kA 20 25 20 25 20 25 20 25 20for switchgear with tk = 3 s up to kA 20 – 20 – 20 – 20 – 20

Rated peak withstand current Ip up to kA 50 63 50 63 50 63 50 63 50Rated short-circuit making current Ima up to kA 50 63 50 63 50 63 50 63 50

Disconnectorpanel1000 A1250 A2000 A2300 A2500 A


AAAA

10001250200023002500

10001250200023002500

10001250200023002500

100012502000

100012502000



Rated peak withstand current Ip up to kA 80 80 80 63 63

Contactorpanel(with HV HRCfuses)

Rated normal current Ir2) for feeder 4) A 400 400 400 400 400




Rated short-circuit making current Ima4) up to kA 80 80 80 63 63

Electrical service life at rated normal current 100,000 or 500,000 operating cyclesDimension ”e” of HV HRC fuse links mm 292 5) 292 5) 442 442 442

Metering panel(with HV HRCfuses)




Dimension ”e” of HV HRC fuse links mm 292 5) 292 5) 442 442 442

7Siemens HA 35.41 · 2003


Technical Data

Electrical data, filling pressure, temperature for double-busbar switchgear

Footnotes for pages 6 and 7

1) Higher values for rated short-duration power-frequencywithstand voltage available with:– 42 kV for phase-to-phase,

phase-to-earth, open contactgap as well as

– 48 kV across the isolatingdistance

2) The rated normal currents applyto ambient temperatures ofmax. 40 °C. The 24-hour meanvalue is max. 35 °C(acc. to IEC 60 694 / VDE 0670Part 1000)

3) Pressure values for SF6-insulatedswitchgear vessels

4) Depending on the HV HRC fuselink, observe max. cut-off currentof HV HRC fuse links

5) Extension tube (150 mm long)required additionally

Commonelectrical data,filling pressureandtemperature

Rated insulation level Rated voltage Ur kV 7.2 12 15 17.5 24Rated short-duration power-freq. withstand voltage Ud:– phase-to-phase, phase-to-earth, open contact gap kV– across the isolating distance kV

2023

2832

36 1)39 1)

38 1)45 1)

5060

Rated lightning impulse withstand voltage Up:– phase-to-phase, phase-to-earth, open contact gap kV– across the isolating distance kV

6070

7585

95110

95110

125145

Rated frequency fr 50/60 HzRated normal current Ir

2) for the busbar A 2000 2000 2000 2000 2000Rated filling pressure pre

3) 150 kPa (absolute) at 20 °CMinimum operating pressure pme

3) 130 kPa (absolute) at 20 °CAmbient temperature – 5 °C to +55 °C

Panel dataCircuit-breakerpanel1000 A1250 A


A10001250

10001250

10001250

10001250

10001250


for switchgear with tk = 1 s up to kA 25 25 25 25 25for switchgear with tk = 3 s up to kA 25 25 25 25 25

Rated peak withstand current Ip up to kA 63 63 63 63 63Rated short-circuit making current Ima up to kA 63 63 63 63 63Rated short-circuit breaking current Isc up to kA 25 25 25 25 25



Incomingsectionalizer,bus coupler

Rated normal current Ir2) A 1250 1250 1250 1250 1250


for switchgear with tk = 1 s up to kA 25 25 25 25 25for switchgear with tk = 3 s up to kA 25 25 25 25 25

Rated peak withstand current Ip up to kA 63 63 63 63 63Rated short-circuit making current Ima up to kA 63 63 63 63 63Rated short-circuit breaking current Isc up to kA 25 25 25 25 25



Furtherpanel types

The above-mentioned panel types can on request be combinedwith panel types of the single-busbar range.


8 Siemens HA 35.41 · 2003

Wall-standing arrangement (top view)Panels without pressure relief duct

Room planning

Technical Data

Room planning for single-busbar switchgearSwitchgear arrangement

• For single-busbar applica-tions:

– Wall-standing arrangementor

– Free-standing arrangement– Face-to-face arrangement

accordingly

• For double-busbar applica-tions:

– Back-to-back arrangement(free-standing arrangement)

Room dimensions

See opposite dimensiondrawings

Door dimensions

The door dimensions dependon the number of panels in onetransport unit

Switchgear fastening

• For floor openings and fixingpoints of the switchgear,see pages 10 to 12

• Foundations:– Steel structure– Steel-reinforced concrete

with foundation rails,welded or bolted on

Panel dimensions

See pages 10 to 12

Weights

• Panels for£ 1250 A:Approx. 700 kg

• Panels for > 1250 A:Approx. 1100 kg

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³50***

125

B****

1100

125*

110012

25³

50

³500***

Wall-standing arrangement(same as left side), but panelswith pressure relief ductaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaHA35-2530b eps B****

³80

0**

1225

52

B****

52

³50***

³50

0

³500***

125*

* 125-mm-deep pressure relief ductat the rear

** For panel replacement: Control aisle³ 1400 mm recommended

*** Lateral wall distances³ 50 mm and³ 500 mm optionallypossible on left or right side

**** For panel width “B”, see dimensionson pages 10 to 12

Free-standing arrangement (top view)

Room height³ 2800 mm

Room height³ 2800 mm


9Siemens HA 35.41 · 2003

Transport

NXPLUS C switchgear is deliver-ed in form of individual panels.

In special cases, transport unitswith a length of up to 2400 mmcan be combined – and puttogether in one crate, if appli-cable.

The following must be notedwhen defining transport units:

• Transport facilities on site

• Transport dimensions andweights

• Size of door openings inbuilding

Packing

Place of destination insideGermany or other Europeancountries

• Method of transport:Rail and truck

• Type of packing:– Panels on open pallets– Open packing with PE

protective foil

Place of destination overseas

• Method of transport:Ship

• Type of packing:– Panels on open pallets– In closed crates with sealed

upper and lower PEprotective foil

– With desiccant bags– With sealed wooden floor– Max. storage time: 6 months

Shipping data for single-busbar switchgear

Technical Data

* Average values depending on theequipping degree of the panels

Transport dimensions

Panel width

mm

Transport dimensionsWidth x Height x Depth

mm x mm x mm

Transport inside Germany or to other European countries

1 x 600 1150 x 2450 x 1350

2 x 600 or 1 x 1200 1550 x 2450 x 1350

3 x 600 or 1 x 600 + 1 x 1200 2150 x 2450 x 1350

4 x 600 or 2 x 600 + 1 x 1200 2750 x 2450 x 1350

Transport overseas

1 x 600 1150 x 2650 x 1350

2 x 600 or 1 x 1200 1550 x 2650 x 1350

3 x 600 or 1 x 600 + 1 x 1200 2150 x 2650 x 1350

4 x 600 or 2 x 600 + 1 x 1200 2750 x 2650 x 1350

Transport weights *

Panel width

mm

Transport weightwith withoutpacking packing

approx. kg approx. kg

1 x 600 700 600

2 x 600 or 1 x 1200 1400 1200

3 x 600 or 1 x 600 + 1 x 1200 2100 1800

4 x 600 or 2 x 600 + 1 x 1200 2800 2400

Siemens HA 35.41 · 2003


10

Dimensions

Front views, sections, floor openings, fixing points for single-busbar switchgear

Circuit-breaker panels Disconnector panels

1100125

2250

702

1726

2409

761

600

HA35

-250

4a e

ps

10046600

700

100

920

280

1200

³50

125

42030

30

43

3

2

25

1

180

110012522

50

702

1726

2409

761

600HA

35-2

506a

eps

10046600

700

100

920

280

1200

³50

125

42030

304

3

3

2

25

1

180

1200 125

2250

702

1726

2409

761

1100

HA35

-250

5a e

ps

100461200

700

100

920

280

1200

³50

125

42030

30

43

3

2

25

1

180

1200 125

2250

702

1726

2409

761

1100

HA35

-250

7a e

ps

100461200

700

100

920

280

1200

³50

125

42030

30

43

3

2

25

1

180

£ 1250 A £ 1250 A

2000 A, 2300 Aand 2500 A

2000 A, 2300 Aand 2500 A

1 Floor openingfor control cables

2 Option: Pressurerelief duct

3 Fixing point

4 Floor openingfor high-voltagecables



3 Fixing point




3 Fixing point




3 Fixing point


Siemens HA 35.41 · 2003 11


Dimensions


Bus sectionalizerswith disconnector before the circuit-breaker

10046600

700

100

920

280

1200

³50

125

42030

30

3

3

2

25HA

35-2

508a

eps

1100125

2250

1726

2409

761

600

1

180

HA35

-251

0a e

ps1100125

2250

1726

2409

761

600

10046600

700

100

920

280

1200

³50

125

42030

303

3

2

25

1

180

100461200

700

100

920

280

1200

³50

125

42030

30

3

3

2

25

1

180

HA35

-250

9a e

ps

1200 125

2250

1726

2409

761

1100

HA35

-251

1b e

ps

1200 125

2250

1726

2409

761

1100

100461200

700

100

920

280

1200

³50

125

42030

30

3

3

2

25

1

180

£ 1250 A

1 panel width

£ 1250 A

1 panel width

£ 1250 A

2 panel widths

Bus sectionalizerswith disconnector before and after the circuit-breaker

2000 A, 2300 Aand 2500 A

1 panel width



3 Fixing point



3 Fixing point



3 Fixing point



3 Fixing point


12 Siemens HA 35.41 · 2003


Switch-disconnector panel with HV HRC fuses

10046600

700

100

920

280

1200

³50

125

42030

30

43

3

2

25HA

35-2

512a

eps

1100125

2250

450

1726

2409

761

600

1

180

HA35

-251

4a e

ps1100125

2250

702

1726

2409

761

600

10046600

700

100

920

280

1200

³50

125

42030

304

3

3

2

25

1

180

HA35

-251

3b e

ps

1100125

2250

450

1726

2409

761

600

10046600

700

100

920

280

1200

³50

125

42030

30

43

3

2

25

1

180

5

HA35

-251

5a e

ps

1100125

2250

1726

2409

761

600

10046600

700

100

920

280

1200

³50

125

42030

30

3

3

2

25

1

180

Ring-main panel(switch-disconnector panel without HV HRC fuses)

Dimensions

Contactor panel with HV HRC fuses Metering panel



3 Fixing point




3 Fixing point




3 Fixing point



3 Fixing point


5 Option:HV HRC fuses

Vacuumcircuit-breaker

13


Siemens HA 35.41 · 2003

Product Range

Single-busbar panels

Circuit-breaker panels

2000 A, 2300 A and 2500 A630 A

1000 A and 1250 A

1) Rated normal currentof busbar£ 1250 A(> 1250 A on request)

Three-positionswitch-disconnector

Three-positiondisconnector

Capacitive voltagedetection system

Disconnectable andplug-in voltage transformer

HA35

-254

1a e

ps

Forced ventilationat 2500 A

Busbar earthingswitch

Plug-in voltagetransformer

1)

Current transformer

Surge arresteror limiter

Max. 2 or 3 outside-coneplugs (not included inthe scope of supply)1 plug thereof replaceableby surge arrester or limiter

Max. 6 outside-coneplugs (not included inthe scope of supply)2 plugs thereof replaceableby surge arrester or limiter

HA35

-248

8b e

ps

1)

HA35

-249

0 ep

s

1)

HA35

-248

9 ep

s

1)


14 Siemens HA 35.41 · 2003

AufbauProduct Range


Disconnector panels

HA35

-249

1 ep

s

1)

1000 A and 1250 A

2000 A, 2300 A and 2500 A


HA35

-249

3b e

ps

HA35

-249

2 ep

s

HA35

-249

4 ep

s

1)

Bus sectionalizers

2000 A, 2300 A and 2500 A, 1 panel width

£ 1250 A, 2 panel widths

HA35

-249

5 ep

s

£ 1250 A, 1 panel width




HA35

-254

1a e

ps

Forced ventilationat 2500 A


1)


Current transformer


Max. 3 outside-coneplugs (not included inthe scope of supply)1 plug thereof replaceableby surge arrester or limiter

Max. 6 outside-coneplugs (not included inthe scope of supply)2 plugs thereof replaceableby surge arrester or limiter

15


Siemens HA 35.41 · 2003

Product Range


Switch-disconnector panel


Ring-main panel

Contactor panel Metering panel

HA35

-249

6 ep

s

1)

HA35

-249

8 ep

s

1)

HA35

-249

7a e

ps

1) 2)

HA35

-249

9a e

ps

Vacuum contactor

HV HRC fuses




HA35

-254

1a e

ps


2nd outside-cone plug(not included in thescope of supply)

2)


1)

Outside-cone plug(not included in thescope of supply)

Current transformer



16 Siemens HA 35.41 · 2003

Double-busbar panels

Circuit-breaker panels


Abbreviations

SS1 = Busbar 1SS2 = Busbar 2

Incoming sectionalizer

Single-busbar panel, prepared for laterextension to double-busbar panel:

Bus coupler

1000 A and 1250 A1000 A and 1250 A

1000 A and 1250 A

Product RangeHA

35-2

500

eps

1) 1)

SS1SS2

HA35

-250

2 ep

s

1) 1)

SS1SS2

HA35

-250

1 ep

s

1)

HA35

-250

3 ep

s

1) 1)

SS1SS2




HA35

-254

1a e

ps

Plug-in voltagetransformer,mounted separately

Current transformer



1)


Max. 3 outside-coneplugs (not included inthe scope of supply)1 plug thereof replaceableby surge arrester or limiter

Panel bars

Siemens HA 35.41 · 2003 17


Basic panel design

Insulating system

• Switchgear vessel filled with SF6-gas

• Features of SF6-gas:– Non-toxic– Odourless and colourless– Non-inflammable– Inert– Heavier than air– Electronegative (high-quality

insulator)

• Pressure of SF6-gas in theswitchgear vessel:

– Rated filling pressure: 150 kPa– Design pressure: 180 kPa– Design temperature

of SF6-gas: 80 °C– Operating pressure of rupture

diaphragm:³ 300 kPa– Bursting pressure:³ 400 kPa

Panel design

• Factory-assembled, type-tested

• Metal-enclosed, metal-clad

• Hermetically welded switchgearvessel made of stainless steel,without seals

• Single-pole, solid-insulated,screened busbars, plug-in type

• Maintenance-free

• Degree of protection– IP 65 for all high-voltage parts

of the primary circuit– IP 3XD for the switchgear enclosure

• Vacuum circuit-breaker andvacuum contactor

• Three-position disconnector fordisconnecting and earthing by meansof the circuit-breaker

• Make-proof earthing by meansof the vacuum circuit-breaker

• Three-position switch-disconnector

• Cable connection withoutside-cone plug-in systemaccording to DIN EN 50 181

• Wall-standing or free-standingarrangement

• Installation and possible later exten-sion of existing panels without gaswork

• Replacement of switchgear vesselwithout gas work

• Replacement of instrument trans-formers without gas work, as theyare mounted outside the gascompartments

• Enclosure made of galvanizedsheet-steel, front cover and endwalls painted in colour ”light basic”

• Low-voltage compartment remov-able, plug-in bus wires

• Lateral, metallic wiring ducts forcontrol cables

Design

Circuit-breaker panel (example)

HA35

-251

6 ep

s

2

8

9

10

12

43

567

16

18

19

20

21

23

24

25

27

29

28

1

30

31

32

33

34

Z

17

11

13

14

115

26

22

Front view

Detail Z:

Sectional view (cable connection from the front)

1 Low-voltagecompartment

2 Multifunction protectionrelay SIPROTEC 4 (example)

3 Switch position indicationfor circuit-breaker

4 Actuating opening forcharging the circuit-breaker springs

5 ON pushbutton forcircuit-breaker

6 ”Spring charged”indication

7 Operating cycle counterfor circuit-breaker

8 Switch position indicationfor ”disconnecting”function of three-positionswitch

9 Ready-for-serviceindication

10 Switch positionindication for ”ready-to-earth” function ofthree-position switch

11 Control gate andlocking device for”disconnecting/earthing”functions of three-position switch

12 Circuit-breakerinterrogation lever

13 Actuating openingfor ”disconnecting”function of three-positionswitch

14 Actuating openingfor ”ready-to-earth”function of three-positionswitch

15 Option: Busbar voltagetransformer, plug-in type

16 Busbars, single-pole,fully-insulated, plug-intype, earthed on theoutside

17 Option: Busbar currenttransformer

18 Switchgear vessel,hermetically welded,filled with SF6-gas

19 Three-positiondisconnector

20 OFF pushbutton forcircuit-breaker

21 Vacuum interrupter ofcircuit-breaker

22 Pressure relief(rupture diaphragm)

23 Capacitive voltagedetection system

24 Locking device for”feeder earthed” (suitablefor locking with padlock)

25 Disconnecting facility forfeeder voltage transformer

26 Bushing for feeder voltagetransformer

27 Option: Feeder voltagetransformer

28 Option: Pressure relief duct

29 Cable connectioncompartment

30 Operating mechanism forthree-position switch

31 Circuit-breaker operatingmechanism

32 Feeder current transformer

33 Cable connection withoutside-cone T-plug

34 Operation of disconnectingfacility of the feeder voltagetransformer

Siemens HA 35.41 · 2003


18


Vacuum circuit-breaker(operating mechanism open)

Components

Features

• According to IEC 60 056and VDE 0670 Parts 101to 106 (standards seepage 34)

• Application in hermeticallywelded switchgear vessel inconformity with the system

• Climate-independentvacuum interrupter polesin the SF6-filledswitchgear vessel

• Maintenance-free for useindoors according toIEC 60 694 and VDE 0670Part 1000

• Individual secondary equip-ment

• A metal bellows is used forgasketless separation of theSF6-insulation and theoperating mechanism – asalready used with successfor over 100,000 vacuuminterrupters

Switching duties andoperating mechanisms

The switching duties of thevacuum circuit-breaker aredependent, among otherfactors, on its type ofoperating mechanism.

Motor operatingmechanism

• Motor operating stored-energy mechanism

– For auto-reclosure (K)– For synchronization and

rapid load transfer (U)

Further operatingmechanism features

• Located outside theswitchgear vessel in theoperating mechanism boxand behind the controlboard

• Stored-energy spring-operated mechanism for10,000 operating cycles

Operating mechanismfunctions

Motor operatingmechanism 1) (M1 *)

In the case of the motoroperating mechanism, theclosing spring is charged bymeans of a motor and latch-ed in the charged position(the ”spring charged” indica-tion is visible). Closing is ef-fected either by means of anON pushbutton or a closingsolenoid. The closing springis recharged automatically(for auto-reclosure).

Trip-free mechanism

The vacuum circuit-breakeris fitted with a trip freemechanism according toIEC 60 056 and VDE 0670.

Abbreviations forswitching dutiesand applications:

U = Synchronization andrapid load transfer(make time£ 90 ms)

K = Auto-reclosure

For further technical data and description of typical applications,please refer also to Catalog HG 11.11 ”3AH Vacuum Circuit-Breakers”

1 Gear with motor (M1 *)

2 Position switch (S4 *)

3 Closing spring

4 ”Closing spring charged”indication

5 Closing solenoid (Y9 *)

6 Operating cycle counter

7 Auxiliary switch 6NO+6NC(S1 *), option: 12NO+12NC

8 Switch position indicationCLOSE/OPEN for circuit-breaker

9 Option: 2nd release

10 1st release (Y1 *)

11 Locking device for”feeder earthed”

HA35

-227

6d e

ps

12 13 14 15 16 17 18

19

12 Fixed terminal

13 Pole support

14 Vacuum interrupter

15 Moving terminal

16 Metal bellows

17 Switchgear vessel,SF6-insulated, with vacuuminterrupter

18 Operating mechanism box(see above figure)

19 Operating kinematics

Section through the vacuum circuit-breaker

R-HA

35-0

50ep

s

1) Motor power consumption at24 V to 220 V DC: 350 W110 V and 220 V AC: 400 VA

* Equipment identificationcode

7

8

9

10

11

6

5

4

3

2

1


Siemens HA 35.41 · 2003 19



Components

Circuit-breaker tripping signal

• For electrical signalling(as pulse > 10 ms), e.g. to re-mote control systems, in thecase of spontaneous tripping(e.g. protection)

• Via limit switch (S6 *) andcut-out switch (S7 *)

Varistor module

• To limit overvoltages toapprox. 500 V for protectiondevices (when inductivedevices are mounted in thevacuum circuit-breaker)

• For auxiliary voltagesW 60 V DC

Auxiliary switch

• Type 3SV9 (S1 *)

• Standard: 6NO+6NC,of which 3NO+4NC contactsare free 1)

• Option: 12NO+12NC,of which 9NO+6NC contactsare free 1)

Position switch

• Type 3SE4 (S4 *)

• For signalling ”closing springcharged”

Mechanical interlocking

• Mechanical interlocking– to the three-position

disconnector– to the three-position

switch-disconnector£ 630 A (option)

• During operation of thethree-position switch, thevacuum circuit-breakercannot be operated

Secondary equipment

The scope of the secondaryequipment of the vacuumcircuit-breaker depends on thetype of application and offers awide range of variations, thusallowing even the highestrequirements to be satisfied:

Closing solenoid

• Type 3AY15 10 (Y9 *)

• For electrical closing

Shunt releases

• Types:– Standard: 3AY15 10 (Y1 *)– Option: 3AX11 01 (Y2 *),

with energy store

• Tripping by protection relay orelectrical actuation

Current-transformer operatedrelease

• Type 3AX11 04 (Y6 *) fortripping pulse W 0.1 Ws inconjunction with suitable pro-tection systems

• Used where no externalauxiliary voltage is available,tripping by protection relay

Undervoltage release

• Type 3AX11 03 (Y7 *)

• Comprising:– Energy store and unlatching

mechanism– Electromagnetic system, to

which voltage is permanentlyapplied in the CLOSEDposition of the vacuumcircuit-breaker; tripping isinitiated when this voltagedrops

• Connection to voltage trans-formers possible

Anti-pumping(mechanical and electrical)

• Function: If CLOSE and OPENcommands are applied simul-taneously and continuously tothe vacuum circuit-breaker,this reverts to its OPEN posi-tion subsequent to closing.The circuit-breaker remains inthis position until a newCLOSE command is given.Thus continuous closing andopening (= pumping) isobviated.

Switching frequency of the vacuum interrupter

10000

20000

5000

2000

1000

100

50

20

10

500

200

10 20 50kA1 2 525

HA35

-253

9 ep

s

Perm

issi

ble

oper

atin

gcy

cles

1) For utilizationby thecustomer

Abbreviations: NO= normally-open contact

NC = normally-closed contact

* Equipmentidentificationcode

O = OPEN operation

CO = CLOSE operation with subsequent OPENoperation at the shortest internal close-open time of the vacuum circuit-breaker

t = Dead time 0.3 s

t ‘ = Dead time 3 min

Electrical data

Rated voltage 15 kVRated short-circuit breaking current£ 31.5 kARated normal current£ 2500 A

Rated switching sequences

O-t-CO or O-t-CO-t’-CO with motor operating stored-energymechanism version

Electrical data

Rated voltage 24 kVRated short-circuit breaking current£ 25 kARated normal current£ 2000 A

Breaking current (r.m.s. value)

10000

20000

5000

2000

1000

100

50

20

10

500

200

10 20 50kA1 2 531.5

HA35

-254

0 en

eps

Breaking current (r.m.s. value)

Perm

issi

ble

oper

atin

gcy

cles

Siemens HA 35.41 · 200320


Three-position switch

Common features

• According toIEC 62 271-102 andVDE 0670 Part 2(Standards see page 34)

• Application in hermeti-cally welded switchgearvessel in conformity withthe system

• Climate-independentswitching elements in theSF6-filled switchgearvessel


• Individual secondaryequipment

• A metal bellows is usedfor gasketless separationof the SF6-insulation andthe operating mechanism– as already used withsuccess for over 100,000vacuum interrupters

Switch positions of the three-position switches

Components


• Application in– Circuit-breaker panel from

1000 A to 2500 A(standard: with interlockagainst the circuit-breaker)

– Disconnector panel from1000 A to 2500 A

– Bus sectionalizer from1000 A to 2500 A

• 1000 mechanical operat-ing cycles for CLOSED /OPEN / EARTHED

• Compact design due toshort contact gaps inSF6-gas

• Operation via gas-tightwelded bushing at thefront of the switchgearvessel

• Reliable switch positionup to the operating frontof the panel


• Application in– Circuit-breaker panel 630 A

(interlock against thecircuit-breaker notnecessary)

– Switch-disconnector panel– Ring-main panel– Contactor panel– Metering panel

• 1000 mechanical operat-ing cycles for CLOSED /OPEN / EARTHED

• Switching functions asgeneral-purpose switch-disconnector (Class E3)according to

– IEC 60 265-1– VDE 0670 Part 301– IEC 62 271-102– VDE 0670 Part 2/EN 60 129

(Standards see page 34)

• Designed as a multi-cham-ber switch incorporatingthe functions

– Switch-disconnector and– Make-proof earthing

switch

• Additional switch-discon-nector functions:

– 10 closing operations atrated short-circuit makingcurrent (demandedaccording to IEC / VDE:2 closing operations)

– 100 operating cycles atrated normal current

Three-position disconnector(in OPEN position)with vacuum circuit-breaker arranged below(view into the switchgear vessel opened at the rear)

1 Fixed contact at the busbar

2 Swinging contact blade

3 Fixed contact for ”feeder EARTHED”

4 Operating shaft

Three-position switch-disconnector(exploded view)

5 Fixed contacts to earth

6 Rotary contact blade

7 Operating shaft

8 Fixed contact to the feeder

9 Fixed contact to the busbar

R-HA

35-0

47ep

sR-

HA35

-040

aep

s

4

3

2

1

5

6

7

8

HA35

-251

8 ep

s CLOSED

OPEN

FeederEARTHED

CLOSED

OPEN

FeederEARTHED

HA35

-251

9 ep

s

Switch positions

Switch positions

5

9

21


Siemens HA 35.41 · 2003

Three-position switch

Components

Interlocks

• Selection of permissibleswitching operations bymeans of a control gatewith mechanically inter-locked circuit-breaker

• Corresponding operatingshafts are not releasedat the operating frontuntil they have been pre-selected with the controlgate

• Operating lever cannotbe removed until switch-ing operation has beencompleted

• Circuit-breaker cannot beclosed until control gateis in neutral positionagain

• Switchgear interlockingsystem possible withelectrical interlocks ifswitchgear is equippedwith motor operatingmechanisms (mechanicalinterlocking for manualoperation remains)

Switch positions

• ”CLOSED”, ”OPEN”,”EARTHED”

In circuit-breaker panels, thecable connection is earthedand short-circuited byclosing the vacuum circuit-breaker

Operating mechanism

• Spring-operated mecha-nism operated via operat-ing lever (slip-on lever) atthe operating front of thepanel

• Separate operating shaftsfor the functionsDISCONNECTING andEARTHING

• Option: Motor operatingmechanism

• Spring-operated/stored-energy mechanism for theswitch-disconnectorfunction with fuses:Opening springpre-charged (after closing)

• Maintenance-free due tonon-rusting design ofparts subjected tomechanical stress

• Bearings which require nolubrication

Transmission principle foroperating mechanisms(see opposite drawings)

• Transmission of operatingpower from outside intothe gas-filled switchgearvessel by means of a metalbellows

• Gas-tight


Transmission principle for operating mechanisms

HA35

-252

0 ep

s

1

2


1 Gas-filled switchgear vessel

2 Gas-tight welded metal bellows

HA35

-252

1 ep

s

1

2


1 Gas-filled switchgear vessel

2 Gas-tight welded metal bellows


22 Siemens HA 35.41 · 2003

HV HRC fuse assembly

Components

Features

• Application in– Switch-disconnector

panel– Contactor panel– Metering panel

• HV HRC fuse linksaccording to DIN 43 625(main dimensions) withstriker pin in ”medium”version acc. to IEC 60 282 /VDE 0670 Part 4

– As short-circuit protectionbefore transformers inthe switch-disconnectorpanel

– As short-circuit protectionbefore motors in thecontactor panel

– As short-circuit protectionbefore voltage trans-formers in the meteringpanel

– With selectivity(depending on correctselection) to upstreamand downstreamconnected equipment

– Single-pole insulated

• Requirements accordingto IEC 60 420 andVDE 0670 Part 303 ful-filled by combination ofHV HRC fuses with thethree-position switch-disconnector

• Climate-independent andmaintenance-free, withfuse boxes made of castresin

• Fuse assembly connectedto the three-positionswitch-disconnector viawelded bushings andconnecting bars

• Location of fuse assemblybelow the switchgearvessel

• Fuse can only be replacedif feeder is earthed

Mode of operation

In the event that an HV HRCfuse link has tripped, theswitch is tripped via an arti-culation which is integratedinto the cover of the fusebox (see figure).

In the event that the fusetripping fails, e.g. if the fusehas been inserted incorrect-ly, the fuse box is protectedby thermal protection. Theoverpressure generated byoverheating trips the switchvia the diaphragm in thecover of the fuse box and viaan articulation. This breaksthe current before the fusebox incurs irreparabledamage.

The above thermal protec-tion works independently ofthe type and design of theHV HRC fuse used. Like thefuse itself, it is maintenance-free and independent of anyoutside climatic effects.

Furthermore, the SiemensHV HRC fuses release thestriker pin independently ofthe temperature and trip thethree-position switch-discon-nector as early as in the fuseoverload range. Impermissi-ble heating of the fuse boxcan be avoided in this way.

Replacementof HV HRC fuse links

• Isolating and earthing ofthe transformer feeder

• Subsequent manual re-placement of the HV HRCfuse link after removingthe cable compartmentcover

HV HRC fuse assembly

11 2

3 4

5 6 7HA

35-2

522

eps

HA35

-252

3 ep

s

Basic design

1 Bushing

2 Switchgear vessel

3 Sealing cover with seal

4 Tripping pin for spring-operated/stored-energy mechanism

5 Fuse box

6 HV HRC fuse link

7 Striker pin of the HV HRC fuse link andarticulation for tripping of thespring-operated/stored-energy mechanism

Schematic sketchesfor fuse tripping

Fuse linkin service condition

Fuse trippedby striker pin

Fuse tripped by overpressure,e.g. if HV HRC fuse linkhas been inserted incorrectly

Siemens HA 35.41 · 2003 23


Allocation of three-position switch-disconnector with HV HRC fuses · Transformer ratings

Components

The opposite table showsrecommended HV HRC fuselinks 3GD (electrical data validfor ambient temperatures of upto 40 °C) for the fuse protectionof transformers.

Recommendation

The three-position switch-dis-connector in the transformerfeeder (transformer switch)was combined with SiemensHV HRC fuse links of type 3GDand tested in accordance withIEC 60 420.

Higher transformer ratings onrequest.

Standards

HV HRC fuse links with strikerpin ”medium” version accordingto

• IEC 60 282

• VDE 0670 Parts 4 and 402

• DIN 43 625main dimensions

Ratedsystemvoltage

kV

Transformer Rated normal current of the HV HRC fuse

Rating SN

kVA

Relative impedancevoltage uk

%

Ratedcurrent I1

A

LowestvalueA

HighestvalueA

6 to 7.2 5075

100

444

4.87.29.6

161620

162025

125160200

444

12.015.419.2

253240

324050

250315400

444

24.030.338.4

505063

6380

100

500630

44

48.061.0

63100

100100

10 to 12 5075

100

444

2.94.35.8

101016

101016

125160200

444

7.29.3

11.5

162025

202532

250315400

444

14.518.323.1

253240

405063

500630800

1000

445 to 65 to 6

29.036.446.258.0

50636380

80100100100

13.8 5075

100

444

2.13.24.2

61010

61010

125160200

444

5.36.78.4

161616

162025

250315400

444

10.513.216.8

202532

253250

500630800

445 to 6

21.026.433.5

405050

506363

10001250

5 to 65 to 6

41.952.4

6380

80100

15 to 17.5 5075

100

444

1.92.93.9

61010

61010

125160200

444

4.86.27.7

101616

101625

250315400

444

9.712.215.5

202532

253240

500630800

445 to 6

19.324.330.9

324050

506350

10001250

5 to 65 to 6

38.548.2

6363

80100

24 5075

100

444

1.52.22.9

66

10

66

10

125160200

444

3.64.75.8

101016

101016

250315400

444

7.39.2

11.6

162020

202532

500630800

445 to 6

14.518.223.1

253232

405040

1000125016002000

5 to 65 to 65 to 65 to 6

29.036.046.558.0

405063

100

5063

100100


24 Siemens HA 35.41 · 2003

Vacuum contactor · Motor protection

Features

• According to IEC 60 470 andDIN EN 60 470 (Standardssee page 34)

• Application in hermeticallywelded switchgear vessel inconformity with the system

• Climate-independent vacuuminterrupter poles in theSF6-filled switchgear vessel


• Individual secondary equip-ment

• A metal bellows is used forgasketless separation of theSF6 insulation and the operat-ing mechanism – as alreadyused with success for over100,000 vacuum interrupters

• Magnet coil for operationlocated outside the switch-gear vessel

• 100,000 or 500,000 operat-ing cycles at rated normalcurrent

Short-circuit and overloadprotection in connection withmotors

In circuits subjected to short-circuit currents, HV HRC fuselinks protect switching deviceswithout short-circuit breakingcapacity (e.g. vacuum contac-tors).

The max. stress for HV HRCfuses arises during motor start-ing (starting currents, startingtimes and starting frequency).

Fuses must not operate or bepre-damaged during motorstarting.

The opposite table shows thepermissible motor starting cur-rents according to the startingtime and starting frequencyof downstream connected HVmotors with the associatedHV HRC fuses.

Vacuum contactor

Components

Vacuum contactor(operating mechanism open)

1 Metal bellows

2 Pole support


4 Operating mechanism box with magnet coil

5 Base plate (welded into the switchgear vessel)

Section through the vacuum contactor

HA35

-252

4a e

ps

76 8 109 11 12 13

Motor protection table

Numberof startsper hour

Maximum permissible motor starting current in A

at rated normal current of fuse

40 A 63 A 100 A 125 A 160 A 250 A

HV motorswith starting timesup to 5 s

2 90 135 255 360 480 740

4 80 120 235 330 440 675

8 75 110 215 300 400 615

16 65 100 190 270 360 550HV motorswith starting timesup to 15 s

2 85 120 225 310 430 635

4 75 110 205 285 400 580

8 70 100 185 260 360 530

16 60 90 165 235 325 475HV motorswith starting timesup to 30 s

2 80 120 215 300 420 600

4 70 105 190 265 370 530

8 65 90 165 230 320 460

16 55 80 145 200 280 400

5

4

32

1

6 Fixed terminal

7 Pole support


9 Moving terminal

10 Switchgear vessel,SF6-insulated, with vacuuminterrupter

11 Metal bellows

12 Operating mechanism box(see above figure)

13 Operating kinematics

HA35

-252

5 ep

s

M3~

R-HA

35-1

10ep

s

25


Siemens HA 35.41 · 2003

Busbars

Features

• Single-pole, plug-in design

• Consisting of round-barcopper, insulated by meansof silicone rubber

• Busbar joints with cross andend adapters, insulated bymeans of silicone rubber

• Field control by means ofelectrically conductive layerson the silicone-rubber insula-tion (both internally and ex-ternally)

• Safe-to-touch by earthingthe external layers with theswitchgear vessel

• Insensitive to pollution andcondensation

• Safe-to-touch as a result ofuse of metallic covers

• Switchgear extension orpanel replacement withoutSF6-gas work

Possible fittings

• Current transformers

• Voltage transformers

• Surge arresters

• Cables with– Straight plug or– T-plug

• Duresca bars(fully insulated)

Legend

1 Cap

2 Busbar insulation made ofsilicone rubber

3 Clamps

4 Busbar (round-bar copper)

5 End adapter

6 Switchgear vessel

7 Metal cover of busbars

8 Cross adapter

9 Earthing connection

Section of busbar 1000 A or 1250 A (basic design)

HA35

-228

3d e

ps

aaaaaaaaaaaaaaaaaa16

2

3

4

5

7

8

9

10

R-HA

35-0

51ep

s

Components

Plug-in busbars (example)

Section of tandem busbar 1600 A, 2000 A, 2300 A or 2500 A (basic design)

HA35

-251

7 ep

s

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2

3

4

7

8

9

10

9

8

5

2

3

4

5

Busbars up to 1250 A, plug-in type, fully insulated(as front view of three panels, without low-voltage compartments)


26 Siemens HA 35.41 · 2003

Components

Current transformers

Features

• According to IEC 60 044-1and VDE 0414 Part 1

• Designed as ring-core currenttransformers, single-pole

• Free of dielectrically stressedcast-resin parts (due todesign)

• Insulation class E

• Inductive type

• Certifiable

• Climate-independent

• Secondary connection bymeans of a terminal strip in-side the panel

Installation

• Arranged outside the primaryenclosure (switchgear vessel)

Mounting locations

• At the busbar (1)

• At the panel connection (2)

• Around the cable (3)

Current transformer types

• Busbar current transformer (1):– Inside diameter of

transformer56 mm /£ 1250 A and56 x 300 mm / > 1250 A

– Usable heightmax. 90 mm / > 1250 A ormax. 170 mm /£ 1250 A

• Feeder current transformer (2):– Inside diameter of

transformer106 mm /£ 1250 A and106 x 240 mm / > 1250 A

– Max. usable height 214 mm

• Cable-type current trans-former (3):

– Inside diameter oftransformer 55 mm

– Max. usable height 170 mm

1 Busbar currenttransformer

2 Feeder currenttransformerat the panel connection

3 Cable-type currenttransformer

Current transformers

R-HA

35-0

52ep

s

Busbar current transformersExample 1250 A

Current transformer fitting (basic design)

1

HA35

-252

6c e

ps

2

3

1

2

1

2

3

Front views: Side view:

Designation Type 4MC

Multiratio (secondary) 200 – 100 A to2500 – 1250 A

Core data according torated primary current:Measuring Ratingcore Class

Overcurrentfactor

max. 3 cores

2.5 VA to 10 VA0.2 to 1

FS 10

Protection Ratingcore Class

Overcurrentfactor

2.5 VA to 30 VA5 P or 10 P

10 to 30

Permissible ambienttemperature

max. 60 °C

Insulation class E

1

630 A, 1000 A 2000 A, 2300 A and 2500 Aand 1250 A

Electrical data

Designation Type 4MC

Operating voltage max. 0.8 kV

Rated short-durationpower-frequency withstandvoltage (winding test)

3 kV

Rated frequency 50/60 Hz

Rated continuous thermalcurrent

max. 1.2 xrated current(primary)

Rated thermalshort-time current,max. 3 s

max. 31.5 kA

Rated current dynamicprimary

secondary

unlimited40 A to2500 A1 A and 5 A

27


Siemens HA 35.41 · 2003

Components

Voltage transformers

Features

• According to IEC 60 044-2 andVDE 0414 Part 2

• Designed as single-pole volt-age transformers, plug-in type

• Metal-enclosed, safe-to-touch

• Connection system withplug-in contact

• Inductive type

• Certifiable

• Climate-independent

• Secondary connection bymeans of plugs inside thepanel

• Cast-resin insulated

• Arranged outside the primaryenclosure (switchgear vessel)

• Mounting locations:– At the busbar– At the panel connection

Voltage transformer types

• Busbar voltage transformer4MT2:

– Pluggable in the cross adap-ters of the busbar£ 1250 Ausing additional adapters(> 1250 A on request)

– No separate metering panelrequired

– Suitable for 80 % of therated short-duration power-frequency withstand voltageat rated frequency

– Repeat test at 80 % of therated short-duration power-frequency withstand voltagepossible with mountedvoltage transformer

• Feeder voltage transformer4MT3 at the panel connec-tion:

– Switchable through anSF6-insulated disconnectingfacility in the switchgearvessel

– Switch positions: ”CLOSED”and ”Transformer bushingEARTHED”

– Operation of the disconnect-ing facility from outsidethrough a metal bellowswelded in the switchgearvessel

– Voltage testing of switchgearand cables possible withmounted and earthed voltagetransformer

Voltage transformers

R-HA

35-1

11ep

s

Voltage transformer fitting (basic design)

Z

HA35

-252

7a e

ps

2 2

3

1

1

HA35

-252

8a e

ps

4

Front view: Side view:

Feeder voltage transformer

Disconnecting facilityfor feeder voltage trans-former (details Z)

Electrical data

Primarydata

Fortypes 4MT3 and 4MT2

Rated voltage 3.3 to 22 kV

Ratedvoltage...at ratedshort-durationpower-frequencywithstandvoltage

10 kV 3.6/ 3 kV

20 kV 4.8/ 3 kV5.0/ 3 kV6.0/ 3 kV6.6/ 3 kV7.2/ 3 kV

28 kV 10 / 3 kV11 / 3 kV

38 kV 13.8/ 3 kV15 / 3 kV

50 kV 17.5/ 3 kV20 / 3 kV22 / 3 kV

Rated voltagefactorUn/8 h

1.9

Secondarydata

Fortype 4MT3

Fortype 4MT2

Rated voltage 100/ 3 V,110/ 3 V

100/ 3 V,110/ 3 V

Auxiliary winding 100/3 V110/3 V

100/3 V110/3 V

Thermal limitcurrent(measuringwinding)

8 A 8 A

Rated long-timecurrent,8 h

5 A 5 A

Rating 0.2at accuracy 0.5class 1

20, 25 and 30 VA50, 75 and 90 VA100, 150 VA

25 VA45 VA75 VA

CLOSED

OPEN and EARTHED

1 Busbar voltage transformer

2 Feeder voltage transformerat the panel connection

3 Operating lever fordisconnecting facility

4 Panel connection


28 Siemens HA 35.41 · 2003

Panel connection

Features

• Bushings with outside cone

• With bolted contact (M16) asinterface type ”C” accordingto EN 50 180 / EN 50 181

• Cable connection height:702 mm (for switch-discon-nector panels and contactorpanels with HV HRC fuses:450 mm)

• With cable bracket,e.g. type C40 according toDIN EN 50 024

• Option:Access to the cable connec-tion compartment only if thefeeder has been isolated andearthed

• For thermoplastic-insulatedcables

• For cable T-plugs or cableelbow plugs with bolted con-tact

• For connection cross-sectionsup to 630 mm2 (standard)

• Cable routing downwards,cable connection from thefront

• For rated normal currentsup to 2500 A

• Cable plugs, cable sealingends and cable clamps arenot included in the scope ofsupply

Surge arresters

• Can be plugged into the cableT-plug

• Surge arresters are recom-mended if, at the same time

– The cable system is directlyconnected to the overheadline,

– The protective range of thearrester at the terminal towerof the overhead line does notcover the switchgear

Surge limiters

• Can be plugged into the cableT-plug

• Surge limiters are recom-mended if motors withstarting currents < 600 A areconnected

Components

Legend

1 Cable T-plug

2 Cable elbow plug

3 Screwed couplinginsert

Panel width 600 mm

Panel width 600 mm

Connection with 1 cable per phase

Connection with 2 cables per phase

Panel width 600 mm Connection with 3 cables per phase



Cable connectioncompartment Connectable cables

* Cable connection heightof 450 mm for switch-disconnectorpanels and contactor panelswith HV HRC fuses

702

(450

*)

L1 L2 L3

HA35

-253

2 ep

s1 2

702

(450

*)

L1 L2 L3

HA35

-253

3 ep

s

1 1

3

1 2

370

2

L1 L2 L3

HA35

-253

4 ep

s

1 1 1

3 3

702

HA35

-253

5a e

ps

L1 L2 L3

1 11 2

3 3

702

HA35

-253

6a e

ps

L1 L2 L3

1 1 1

3 3

29


Siemens HA 35.41 · 2003

Components

Installation possibilities for cable connections and surge arresters

1) Observe the actual current carryingcapacity and short-circuit current carryingcapacity of the cables and sealing ends

3) With a current carryingcapacity of³ 2300 A, pro-vide silver-plated cable lugs

2) With an actual current carryingcapacity of > 1100 A at 40 °C,provide silver-plated cable lugs

4) Cable compartment cover20 mm deeper thanstandard

Panel type Numberof cablesper paneland phase

Make Core cross-section 1)

mm2

Insula-tion

Cableelbow plugs

bolted

CableT-plugs

bolted

Couplinginserts

bolted

Surgearresters

(additionally)

– Circuit-breakerpanel 630 A,1000 A

– Switch-disconnec-tor panel 630 A

– Ring-main panel630 A

1 Euromold up to 300 EPDM – 1x(K)400 TB/G – 1x156SA-X or1x400PB-5/10-SA-X

185 to 630 EPDM – 1x(K)440 TB/G – 1x156SA-X or1x400PB-5/10-SA-X

up to 240 Silicone – 1xAGT 10(20),with metal housing

CP-AGT(L) 1x156SA-X or1x400PB-5/10-SA-X

up to 240 Silicone – 1xAGT L10(20),screened


up to 300 EPDM 1x(K)400 LB/G – – –

ABBEnergiekabel

up to 300/240 Silicone – 1xSET12/24 – 1xMUT 13/23

300 to 500 Silicone – 1xSEHDT13/23 – –

nkt cables up to 300 Silicone – 1xCB 24-630 – 1xCSA 24-5

Tyco ElectronicsRaychem

up to 300 Silicone – 1xRSTI-56xx – –

up to 300 Silicone – 1xRSTI-56xx RSTI-56CPxx 1xRSTI-56A-xx

2 Euromold up to 300 EPDM – 2x(K)400 TB/G (K)400CP –

185 to 630 EPDM – 2x(K)440 TB/G (K)440CP –


CP-AGT(L) 1x400PB-5/10-SA-X


CP-AGT(L) 1x400PB-5/10-SA-X

up to 300 EPDM 1x(K)400 LB/G 1x(K)400 TB/G (K)400CP-LB –

ABBEnergiekabel

up to 300/240 Silicone – 2xSET12/24 – –


up to 300/240 Silicone – 2xSET12/24 – 1xMUT 13/23

nkt cables up to 300 Silicone – 2xCB 24-630 CP 630C 1xCSA 24-5

up to 300 Silicone – 1xCB 24-630 + 1xCC 24-630 – 1xCSA 24-5


up to 300 Silicone – 2xRSTI56xx RSTI-56CP –

up to 300 Silicone – 2xRSTI56xx RSTI-56CP 1xRSTI-56SA-xx

– Circuit-breakerpanel anddisconnector panel,1250 A 2)

1 or 2 Same possibility as above

3 4) Euromold 185 to 630 EPDM – 3x(K)440 TB/G (K)440CP –




up to 300 Silicone – 3xRSTI-56xx RSTI-56CP –

– Circuit-breakerpanel anddisconnector panel,2000 A

4 Euromold up to 300 EPDM – 4x(K)400 TB/G (K)400CP 1x156SA-X or1x400PB-5/10-SA-X

185 to 630 EPDM – 4x(K)440 TB/G (K)440CP 1x156SA-X or1x400PB-5/10-SA-X





up to 300 EPDM 2x(K)400 LB 2x(K)400 TB/G (K)400CP-LB –

ABBEnergiekabel






up to 300 Silicone – 4xRSTI-56xx RSTI-56CP RSTI-56SA-xx

6 4) Euromold 185 to 630 EPDM – 6x(K)440 TB/G (K)440 CP –

nkt cables up to 300 Silicone – 6xCB 24-630 CP 630C –

up to 300 Silicone – 2xCB 24-630 + 4xCC 24-630 – –



Up to 15 kV:– Circuit-breaker

panel anddisconnector panel,2300 A, 2500 A 3)

6 4) Euromold up to 300 EPDM – 6x(K)400 TB/G27 (K)440 CP –


30 Siemens HA 35.41 · 2003

Components

Panel connection (cable sealing ends available on the market)

Cable type Cable sealing end (further types on request) Comment

Make Type Design Cross-sectionT/W 1) mm2

Thermoplastic-insulated cables 12 kV according to IEC 60 502-2 and VDE 0276 Part 620

1-core cable,PE and XLPE-insulated

N2YSY (Cu) andN2XSY (Cu)

or

NA2YSY (AI) andNA2XSY (AI)

Euromold 400 TB/G T 25–300 EPDM (conductive)

400 LB/G W 25–300 EPDM (conductive)

440 TB/G T 185–630 EPDM (conductive)

AGT 10 T 95–240 Silicone with metal housing

AGTL 10 T 95–240 Silicone (conductive)

nkt cables CB 24-630 T 25–300 Silicone (conductive), option: with metal housing

ABB Energiekabel SET 12 T 70–300 Silicone (conductive), option: with metal housing

SEHDT 13 T 400–500 Silicone (conductive), option: with metal housing


RSTI 56.. T 25–300 Silicone (conductive), with capacitive measuring point

Thermoplastic-insulated cables 15/17.5/24 kV according to IEC 60 502-2 and VDE 0276 Part 620

1-core cable,PE and XLPE-insulated

N2YSY (Cu) andN2XSY (Cu)

or

NA2YSY (AI) andNA2XSY (AI)

Euromold K400 TB/G T 25–300 EPDM (conductive)

K400 LB/G W 25–300 EPDM (conductive)

K440 TB/G T 185–630 EPDM (conductive)

AGT 20 T 25–240 Silicone with metal housing, multi-range design

AGTL 20 T 25–240 Silicone (conductive)

nkt cables CB 24-630 T 25–300 Silicone (conductive), option: with metal housing

ABB Energiekabel SET 24 T 35–240 Silicone (conductive), option: with metal housing

SEHDT 23 T 300–500 Silicone (conductive), option: with metal housing

for single-corecables

RSTI 56.. T 25–300 Silicone (conductive), with capacitive measuring pointTycoElectronicsRaychem

1) T = Cable T-plug, W = Cable elbow plug

2) VDE 0278, IEC 60071, BS 7215, ANSI / IEEE 386, CENELEC HD 629.1 S1

31


Siemens HA 35.41 · 2003

Components

Indicating and measuring equipment

Voltage detection systems

• To verify safe isolation from supply

• Detection systems (option):– LRM system with plug-in indicator– HR system with plug-in indicator– LRM system with CAPDIS– LRM system with CAPDIS-S1– LRM system with CAPDIS-S2

LRM and HR systems

• With voltage indicator according toIEC 61 243-5 and VDE 0682 Part 415

• Verification of safe isolation fromsupply phase by phase by insertion ineach socket pair

• Indicator for continuous operation

• Safe-to-touch

• Routine-tested

• Measuring system and voltage indicatorcan be tested

• Voltage indicator flashes if high voltageis present

CAPDIS

• Voltage detection system according toVDE 0682 Part 415


• Three-phase display

• Reliable indication of– Voltage state of switchgear– Isolation from supply by active zero

indication– Error

• With integrated signalling relay for– Voltage present– Voltage not present– Error

• Self-testing, thus repeated testing, as de-manded in the standards, is not required

• Additional test sockets for phase com-parison with an LRM phase comparisontest unit

CAPDIS-S1 and -S2

Same design as CAPDIS voltage detectionsystem, but:

• Without active zero indication andwithout signalling relay

• Auxiliary voltage not required

• Option: With remote indication of thevoltage state (auxiliary voltage requiredfor CAPDIS-S2)

Verification of correct terminal-phaseconnections

• Verification of correct terminal-phaseconnections possible by means of aphase comparison test unit(can be ordered separately)

• Safe-to-touch handling of the phasecomparison test unit by inserting it intothe capacitive taps (socket pairs) of theswitchgear

Phase comparison test units

Phase comparison test unitMake: Horstmann, type ORION 3.0as combined test unit for– Phase comparison– Interface testing at switchgear– Voltage detection for HR and

LRM systems

or other makes

R-HA

40-0

59ep

s

Phase comparison test unitMake: Pfisterer, type EPV(or other makes)

R-HA

40-0

89ep

s

R-HA

40-0

88ep

sR-

HA40

-080

eps

Voltage indicatorpluggable per phase at the panel front

Voltage detection systemCAPDIS-S1

HA35

-253

7 ep

s

�C1

ULE �C2 U2

L2L1

L3

plugged-inLRM or HRsystem

mountedCAPDIS

Voltage indication principle

R-HA

35-0

67.e

ps

Voltage detection system CAPDIS

1 Signalling relay (accessible from the rear)

2 LCD

3 Test sockets

1 2 3

Voltage indicators and detection systems

Voltage indicationwith capacitive voltage divider (principle)

– C1 Capacity integrated into bushing

–C2 Capacity of the connection leads andof the voltage indicator to earth

ULE= UN / 3 during rated operationin the three-phase system

U2 = UA= Voltage at the capacitive interfaceof the switchgear or at the voltage indicator


32 Siemens HA 35.41 · 2003

Components

Ready-for-service indicator

Features

• Self-monitoring; easy to read

• Independent of temperatureand pressure variations

• Independent of site altitude

• Only responds to changes ingas density

• Option: Alarm switch ”1 NOcontact” for remote electricalindication

Mode of operation

For the ready-for-service indi-cator, a gas-tight measurementbox is installed inside theswitchgear vessel.

A coupling magnet, which isfitted to the bottom end of themeasurement box, transmits itsposition to an outside armaturethrough the non-magnetizablestainless steel switchgearvessel. This armature movesthe ready-for-service indicatorof the switchgear.

While changes in the gas densi-ty during the loss of gas, whichare decisive for the insulatingcapacity, are displayed, tempe-rature-dependent changes inthe gas pressure are not. Thegas in the measurement boxhas the same temperature asthat in the switchgear.

The temperature effect is com-pensated via the same pressurechange in both gas volumes.

Low-voltage compartment

• Accommodates equipmentfor protection, control,measuring and metering

• Separated from the high-voltage part, safe-to-touch

• Low-voltage compartmentcan be removed, bus wiresand control cables areplugged in

• Option: High low-voltagecompartment (1160 mminstead of 761 mm) possible

1 Ready-for-service indicator

2 Measurement box

3 Magnetic coupling

4 Red indication:not ready for service

5 Green indication:ready for service

Principle of operationof gas monitoringwith ready-for-service indicator

2

34

5

HA35

-253

8 ep

s

Stainless-steel vesselfilled with SF6-gas,gauge pressure50 kPa at 20 °C

Ready-for-serviceindicator

Gas monitoring Low-voltage compartment

R-HA

35-1

05ep

s

Control board (detail)with red/green ready-for-serviceindicator

Low-voltage compartment withmultifunction protection relay SIPROTEC 4 7SJ61(example)

Descriptionof the SIPROTEC 4 multifunction protection relays,see page 33.

1


R-HA

35-1

12a

eps

33


Siemens HA 35.41 · 2003 33


Multifunction protectionrelay SIPROTEC 4 7SJ63

• For stand-alone or masteroperation

• Communications and buscapability

• Functions: control,protection, indicating,communications andmeasuring

• LCD for process andequipment data, in theform of a feeder mimicdiagram and as text, e.g.for

– Measuring and meteringvalues

– Information on status ofswitchgear and switchingdevice

– Protection data– General indications– Alarms

• Four user-programmablefunction keys for frequent-ly performed actions

• Fourteen user-program-mable LEDs for displayingany desired data

• Two key-operatedswitches to switch be-tween ”local and remotecontrol” and ”interlockedand non-interlockedoperation”

• Keys for navigation inmenus and for enteringvalues

• Integrated motor controlby special relays withenhanced performance

Legend

1 LCD

2 LEDs

3 Key-operated switches

4 Navigation keys

5 Control keys

6 Function keys

7 LCD (text display)

Multifunctionprotection relaySIPROTEC 4 7SJ63

4

5

6

2

3

R-HA

35-1

02ep

s

The low-voltage compart-ment can accommodate allcustomary protection, con-trol, measuring and moni-toring equipment availableon the market.

Examples:

Multifunction protectionrelay SIPROTEC 47SJ600/7SJ602

• User-friendly operatingprogram DIGSI 4 for con-figuration and analysis



• LCD (2 text lines) and key-board for local operation,configuration and display

• Four user-programmableLEDs for displaying anydesired data

• Operation and fault indi-cation memory

• Fault recording

• Circuit-breaker control

Multifunction protectionrelay SIPROTEC 47SJ61/7SJ62

• For stand-alone or masteroperation



• LCD (4 text lines) for pro-cess and equipment data,in the form of a feedermimic diagram and astext, e.g. for

– Measuring and meteringvalues

– Information on status ofswitchgear and switchingdevice

– Protection data– General indications– Alarms

• Four user-programmablefunction keys for frequent-ly performed actions

• Seven user-programma-ble LEDs for displayingany desired data

• Keys for navigation inmenus and for enteringvalues

Multifunction protection relaySIPROTEC 4 7SJ61/7SJ62

Multifunction protection relaySIPROTEC 4 7SJ600/7SJ602

Multifunction protection relays SIPROTEC 4

R-HA

35-1

04ep

sR-

HA35

-103

eps

1

7

2

6

4

4

2

7

Components

Rated short-duration power-frequency withstand voltage to be selected

WRated short-dur. power-fre. withstand volt. (IEC 60 694 / VDE 0670 Part 1000)

1.1 · a

Rated lightning impulse withstand voltage to be selected

WRated lightning impulse withstand volt. (IEC 60 694 / VDE 0670 Part 1000)

1.1 · a


34 Siemens HA 35.41 · 200334

Standards

Standards, specifications, guidelines

Type of service location

NXPLUS C switchgear can beused as an indoor installation inaccordance with IEC 61 936 andVDE 0101

• Outside lockable electricalservice locations at placeswhich are not accessible tothe public. Enclosures ofswitchgear can only beremoved with tools

• Inside lockable electricalservice locations. A lockableelectrical service location is aplace outdoors or indoors thatis reserved exclusively forhousing electrical equipmentand which is kept under lockand key. Access is restricted toauthorized personnel and per-sons who have been properlyinstructed in electrical engi-neering. Untrained or un-skilled persons may only enterunder the supervision of au-thorized personnel or properlyinstructed persons

Terms

”Make-proof earthing switches”are earthing switches withshort-circuit making capacityaccording to– IEC 62 271-102 and– VDE 0670 Part 2 /

EN 60 129.

Standards

The NXPLUS C switchgearcomplies with the relevantstandards and specificationsapplicable at the time of typetests.

In accordance with the harmo-nization agreement reached bythe EU countries, their nationalspecifications conform to theIEC standard.

Insulating capacity

• The insulating capacity is veri-fied by testing the switchgearwith rated values accordingto IEC 60 694 and VDE 0670Part 1000 (see table)

• The rated values are referredto sea level and to normalatmospheric conditions(1013 hPa, 20 °C, 11 g/m3

water content in accordancewith IEC 60 071 andVDE 0111)

The gas insulation at a gaugepressure of 50 kPa permitsswitchgear installation at anydesired altitude above sea level,without the insulating capacitybeing adversely affected. Thisalso applies to the cable connec-tion when cable plugs are used.

A decrease (reduction) of the in-sulating capacity with increasingsite altitude must only be consi-dered for panels with HV HRCfuses.

This reduction (r correctionfactor a = 0.9, see opposite dia-gram) is permitted up to a sitealtitude of 1000 m according toIEC and VDE.

For site altitudes above 1000 m,the standards do not provideany guidelines for calculatinginsulation, but leave this to thescope of special arrangements.

* In future all standards for switchingdevices and switchgear will besummarized in IEC 62 271

** Withdrawn standard

Correction factor a for panels with HV HRC fuses

For site altitudesabove 1000 m,the adjacent cor-rection factor a isrecommended,depending on theactual site altitudeabove sea level.

Example:

3000 m site altitude above sea level17.5 kV switchgear rated voltage95.0 kV rated lightning impulse withstand voltage

Rated lightning impulse 95 kVwithstand voltage to be selected 1.1 · 0.73

= 118 kV

500040003000200010000

0,9

0,8

0,7

0,6

0,1

0

1

HA40

-203

7a e

ps

Corr

ectio

nfa

ctor

a

Site altitude in m above sea level

Result:

According to the abovetable, switchgear for arated voltage of 24 kV isto be selected.

Overview of standards

Table - Insulating capacity

Rated voltage (r.m.s. value) kV 7.2 12 15 17.5 24

Rated short-duration power-frequency withstand voltage (r.m.s. value)

– Across isolating distances kV 23 32 39 45 60

– Between phases and to earth kV 20 28 36 38 50

Rated lightning impulse withstand voltage (peak value)

– Across isolating distances kV 70 85 105 110 145

– Between phases and to earth kV 60 75 95 95 125

1) NXPLUS C switchgear

2) Circuit-breaker

3) Disconnector and earthing switch

4) Switch-disconnector

5) Switch-disconnector/fusecombination

6) Voltage detection systems

7) Current transformers

8) Voltage transformers

IEC standard VDE standard EN standard

up to now current in future current in future current

Switch-gear

1) IEC 60 694 * IEC 60 694 * IEC 62 271-1 VDE 0670 Part 1000 VDE 0671-001 EN 60 694

IEC 60 298 * IEC 60 298 * IEC 62 271-200 VDE 0670 Part 6 VDE 0671-200 EN 60 298

Devices 2) IEC 60 056 ** IEC 62 271-100 IEC 62 271-100 VDE 0670 P. 101 to 106 VDE 0671-100 EN 60 0563) IEC 60 129 ** IEC 62 271-102 IEC 62 271-102 VDE 0670 Part 2 VDE 0671-102 EN 60 1294) IEC 60 265-1 * IEC 62 265-1 * IEC 62 271-103 VDE 0670 Part 301 VDE 0671-103 EN 60 265-15) IEC 60 420 ** IEC 62 271-105 IEC 62 271-105 VDE 0670 Part 303 VDE 0671-105 EN 60 4206) IEC 61 243-5 IEC 61 243-5 IEC 61 243-5 VDE 0682 Part 415 VDE 0682 Part 415 EN 61 243-5

Degr.of prot. IEC 60 529 IEC 60 529 IEC 60 529 VDE 0470 Part 1 VDE 0470 Part 1 EN 60 529

Insulation IEC 60 071 IEC 60 071 IEC 60 071 VDE 0111 VDE 0111 EN 60 071

Trans-formers

7) IEC 60 044-1 IEC 60 044-1 IEC 60 044-1 VDE 0414 Part 1 VDE 0414 Part 1 EN 60 044-18) IEC 60 044-2 IEC 60 044-2 IEC 60 044-2 VDE 0414 Part 2 VDE 0414 Part 2 EN 60 044-2

35


Siemens HA 35.41 · 2003 35

Notes

If not stated otherwise onthe individual pages of thiscatalog, we reserve the rightto include modifications,especially regarding thestated values, dimensionsand weights.

Drawings are not binding.

All product designations usedare trademarks or productnames of Siemens AG or othersuppliers.

If not stated otherwise, alldimensions in this catalog aregiven in mm.

Responsible for

Technical contents:Herbert SoensSiemens AG, Dept. PTD M2 S2Erlangen

General editing:Gabriele PollokSiemens AG, Dept. PTD CC TErlangen

Standards, specifications, guidelines

Printed in GermanyKGK 02.03 9.0 VO/- 32 En 1005636101/D6271

Standards

Climate and ambientconditions

NXPLUS C switchgear is fullyenclosed and insensitive toclimatic conditions.

• All medium-voltage devices(except HV HRC fuses) are in-stalled in a gas-tight, weldedstainless steel switchgearvessel which is filled withSF6-gas

• Live parts outside the switch-gear vessel are provided withsingle-pole enclosure

• At no point can creepage cur-rents flow from high-voltagepotentials to earth

• Operating mechanism partswhich are functionally impor-tant are made of corrosion-resistant materials

• Bearings in operating mecha-nisms are designed as drybearings and do not requirelubrication

Protection against solidforeign bodies, electric shockand water

NXPLUS C switchgear compliesaccording to

with the following degrees ofprotection:

IEC 60 694 VDE 0670 Part 1000,DIN EN 60 694

IEC 60 298 VDE 0670 Part 6

IEC 60 529 DIN EN 60 529

Degree ofprotection

Type ofprotection

IP 65 for parts of theprimary circuitwhich are subjectedto high-voltage

IP 3XD for switchgearenclosure

Resistance to internalarc faults

Due to the single-pole enclosureof external components andthe SF6-insulation of switchingdevices, the probability of faultsin SF6-insulated switchgear isconsiderably lower than informer switchgear types, as

• There are no effects due toexternal influences such as

– Pollution layers– Moisture– Small animals and foreign

bodies

• Maloperation is practicallyexcluded by logical arrange-ment of the operatingmechanism elements

• Short-circuit-proof feederearthing by means of thecircuit-breaker or the three-position switch-disconnector

In the unlikely event of a faultwithin the switchgear vessel,the energy conversion in thecase of an internal arc fault isminor thanks to the SF6-insula-tion, i.e. approximately only 1/3compared to air. The escapinggases are discharged upwardsthrough a pressure relief duct(option).

Aseismic capacity (optional)

NXPLUS C switchgear can beupgraded for regions at riskfrom earthquakes.

For upgrading, earthquakequalification testing has beencarried out in accordance withthe following standards:

• IEC 68-3-3, 1993

• IEC 68-2-6, 1995

• IABG TA13-TM-002/98(guide)

Within the range of the pre-vailing earthquake frequenciesfrom 1 Hz to 35 Hz, the cate-gory 1 required response spec-trum to IABG TA13-TM-002/98covers the following responsespectra:

• Uniform BuildingCode zone 3

• Seismic RequirementsSpec. 9067; Department ofWater & Power, Los Angeles

• GTS – 1.013 ENDESA, Chile

• VDE 0670 Part 111

Current carrying capacity

• According to IEC 60 298,IEC 60 694 and VDE 0670Part 6 and Part 1000, therated normal current refers tothe following ambient tempe-ratures:

– Maximum of24-hour mean + 35 °C

– Maximum + 40 °C

• The current carrying capacityof the panels and busbarsdepends on the ambient tem-perature outside the enclo-sure.

Tests for resistance to internalarc faults

• Tests for verifying resistance tointernal arc faults should es-tablish proper protection foroperating personnel

• Tests for resistance to internalarc faults can be agreedbetween the owner andmanufacturer in accordancewith IEC 60 298 andVDE 0670 Part 6

• The tests must be performedin accordance with IEC 60 298and VDE 0670 Part 6

• Definitions of criteria:– Criterion 1

Correctly secured doors,covers etc. do not open

– Criterion 2Parts of the enclosed switch-gear which may cause ahazard do not fly off

– Criterion 3No holes in the freelyaccessible external parts ofthe enclosure as the result ofburning in or tearing open

– Criterion 4Vertically arranged indicatorsdo not ignite

– Criterion 5Horizontally arrangedindicators do not ignite

– Criterion 6The effectiveness of the earthconnection must not bedetrimentally influenced

Published by

Siemens AG

Power Transmission and DistributionMedium Voltage DivisionPostfach 32 20

91050 ErlangenGermany

Order No.: E50001-K1435-A401-A6-7600www.siemens.com/medium-voltage-switchgear

ha 35 41 2003 en - home - hem - siemens i sverige - … circuit-breaker switchgear type nxplus c up...

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