fixed-mounted circuit-breaker up to 40.5 kv, sf -insulated · offshore wind generators ... nxplus...

Fixed-Mounted Circuit-BreakerSwitchgear Type NXPLUSup to 40.5 kV, SF6-Insulated

Medium-VoltageSwitchgear

Catalog HA 35.512003

Supersedes:Catalog HA 35.51 · 2001

Fixed-Mounted Circuit-Breaker Switchgear Type NXPLUS up to 40.5 kV, SF6-Insulated

2 Siemens HA 35.51 · 2003

Contents Application

Types

© Siemens AG 2003

Page

Application

Types, typical uses 2 to 4

Requirements

Features, safety, technology 4 and 5

Technical Data

Electrical data, dimensions 6Room planning 7

Product Range

Single-busbar panels 8 and 9Double-busbar panels 10 and 11

Design

Single-busbar panel design 12 and 13Double-busbar panel design 14 and 15

Components

Panel interconnection, module coupling 16Switching devices 17Protection, control, indicatingand measuring equipment 18 and 19Mechanical control board 20Instrument transformers 21Panel connection 22 and 23

Standards

Standards, specifications, guidelines 24 to 26

Notes

27

NXPLUS fixed-mounted circuit-breaker switchgear

is a three-pole, metal-enclosed, metal-clad, SF6-insulated switchgearfor indoor installation in single-busbar and double-busbar design.

R-HA

35-0

85b

eps

R-HA

35-0

86b

eps

Single-busbarpanel

Double-busbarpanel

Features

• Environmental independencethanks to welded stainless-steel switchgear vesselwithout seals

• Compact design thanks toSF6-insulation

• Maintenance-free designthanks to

– Hermetically weldedswitchgear vessel

– Maintenance-free switchingdevices

• Innovations thanks to– Numerical substation control

and protection systems– Combined protection and

control systems


3Siemens HA 35.51 · 2003 3

Typical uses

Application

ApplicationPublic power supply system

ApplicationOffshore wind generators(photo: Vestas Denmark)

R-HA

35-0

90ep

s

R-HA

35-0

92ep

s

R-HA

35-0

93a

eps

R-HA35-091 eps

NXPLUS switchgearwith maximum equipment

Application Steelworks


4 Siemens HA 35.51 · 2003

Typical uses Features

Application Requirements

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

■ Power supply companies■ Power stations■ Cement industry■ Automobile industry■ Iron and steelworks■ 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 and enclosed cable plugsmake NXPLUS switchgear

• Insensitive to aggressive am-bient conditions such as saltwater, humidity, dust andtemperature

• Hermetically tight to ingressof foreign bodies such as dustand dirt

• Independent of site altitude

Compact design

Thanks to the SF6-insulation,compact dimensions arepossible up to 40.5 kV.

Thus,

• Existing switchgear roomscan be used effectively

• Reduced costs for newconstructions

• Expensive city-area space issaved

Maintenance-free design

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

• Maximized power supplyreliability

• Personal safety

• Sealed-for-life designaccording to IEC 60 298

• Installation, operation,extension and replacementwithout SF6-gas work

• Reduced operating costs

• Cost-efficient investment

• No maintenance cycles

• Reduced overall LCC(Life-Cycle Cost)

Innovations

The use of numericalsubstation control andprotection systems andcombined protection andcontrol devices ensure

• Clear integration in pro-cess control systems

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


5Siemens HA 35.51 · 2003

Personal safety

• Safe-to-touch and hermeti-cally sealed primary enclo-sure

• 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 (primary part)and IP 3XD (secondary part)according to IEC 60 529 /VDE 0470 Part 1

• High resistance to internalarcs by logical mechanicalinterlocks and tested switch-gear enclosure

• Arc-fault-tested panelsaccording to IEC 60 298 /VDE 0670 Part 6

• Logical mechanical and / orelectrical interlocks preventmaloperation

Operating safety

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

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

• Operating mechanisms ofswitching devices accessi-ble outside the switchgearvessel (primary enclosure)

• Metal-enclosed, plug-in in-ductive voltage transform-ers mounted outside thegas compartments

• Ring-core current trans-formers mounted outsidethe gas compartments

• Complete logical mechani-cal interlocking system

• Welded switchgear vessels,sealed for life

• Minimum fire load

• Type and routine-tested

• Standardized, NC produc-tion processes

• Quality assurancein accordance withDIN EN ISO 9001

• More than 300,000switchgear panels ofSiemens in operationworldwide for many years

• Successfully tested for usedown to –20 °C

• Option: Aseismic design

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

• Outgoing and incomingfeeder panel width: 600 mm

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

• Single-pole, solid-insulated,screened, bolted-typemodule coupling

• Cable connection with insideor outside cone plug-insystems or connection ofsolid-insulated bars

• Wall-standing or free-standing arrangement

• Cable connection access fromfront or rear

• Doors left or right-hinged

• Existing switchgear extend-able on both sides withoutmodification of panels

• Internal panel control cableslaid in metallic cable ducts

Safety

Modular design

• Circuit-breaker modulereplacement possiblewithout SF6-gas work andwithout interruptingbusbar operation

• Low-voltage compartmentcan be removed withoutinterrupting the bus wires

Instrument transformers

• Can be removed withoutaltering the positions of thebusbar and circuit-breakermodules (outside the gascompartments)

Vacuum circuit-breaker

• Maintenance-free undernormal ambient conditionsaccording to IEC 60694 /VDE 0670 Part 1000

• No relubrication orreadjustment

• Up to 10,000 operatingcycles

• Vacuum-tight for life

Interlocks

• According to IEC 60 298 /VDE 0670 Part 6

• Electrical interlocks sinceall mechanisms are motoroperating mechanisms

• Manual emergency operat-ing mechanisms withenabling key S1

Technology

Requirements


6 Siemens HA 35.51 · 2003

Electrical data

Technical Data

Rated values

Single-busbar panels

Rated max. kVvoltage

7.2 12 24 36 40.5

Ratedfrequency

50 Hz 1)

Rated short-duration power- kVfrequency withstand voltage

20 28 50 70 85

Rated lightning impulse kVwithstand voltage

60 75 125 170 185

Rated short-circuitbreaking current

max. 31.5 kA

Rated short-timewithstand current, 3 s

max. 31.5 kA

Rated short-circuitmaking current

max. 80 kA

Rated peakwithstand current

max. 80 kA

Rated normal max. Acurrent of busbar

20002)

20002)

20002)

20002)

2000

Rated normal max. Acurrent of feeders

20002)

20002)

20002)

20002)

2000

Dimensions in mm


350

1840

1515

230

1385 39560

935230

230

2

HA35

-242

8b e

ps

PLUSNX

2600

B280

1

350

1600

1515

280 280 935

1145 39560

2

HA35

-242

7c e

ps

PLUSNX

2450

B180

1

Double-busbar panels

Rated max. kVvoltage

7.2 12 24 36

Ratedfrequency

50 Hz 1)

Rated short-duration power- kVfrequency withstand voltage

20 28 50 70

Rated lightning impulse kVwithstand voltage

60 75 125 170

Rated short-circuitbreaking current

max. 31.5 kA

Rated short-timewithstand current, 3 s

max. 31.5 kA

Rated short-circuitmaking current

max. 80 kA

Rated peakwithstand current

max. 80 kA

Rated normal max. Acurrent of busbar

2500 2500 2500 2500

Rated normal max. Acurrent of feeders

2500 2500 2500 2500

1 End wall 2 Busbars

1 End wall 2 Busbars

3) 1200 mm for 2300 / 2500 A

4) 900 mm or 1200 mm for 2300 / 2500 A

1) 60 Hz on request

2) 2500 A on request


Panel width B1

Circuit-breaker panel 600 mm

Disconnector panel 600 mm

Bus sectionalizer panel 900 mm

Panel width B2

Circuit-breaker panel 3) 600 mm

Bus coupler panel 3) 600 mm

Bus sectionalizer panel,system 1 or system 2 4)

600 mm

Metering panel 300 mm

7Siemens HA 35.51 · 2003


Technical Data

Room planning

Room planning for single-busbar switchgear

Room planning for double-busbar switchgear

See table on page 6 for dimension B2

* Aisle width

** Free space next to last installed panel,either on left or right of switchgear row

*** Recommended: W 500 mm

See table on page 6 for dimension B1

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80³500**

³160

0*16

00³5

0

B1B1aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaa a aa aaaaa aaaaaaaaHA35-2408a eps 80³50***

80³50***

80³500**

80³500**

1600

³50

³160

0*16

00³5

0

B1B1

B1B1Single-row arrangement (top view)for single-busbar switchgear

Face-to-face arrangement (top view)for single-busbar switchgearaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaHA35-2409a eps 80

³50***80

³500**

³160

0*18

40³2

50

B2B2

Single-row arrangement (top view)for double-busbar switchgearaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaa a aa aaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaHA35-2410a eps 80

³50***

80³50***

80³500**

80³500**

1840

³250

³160

0*18

40³2

50B2B2

B2B2

Face-to-face arrangement (top view)for double-busbar switchgear

HA35

-238

7b e

psHA

35-2

386b

eps


8 Siemens HA 35.51 · 2003

Product Range


Circuit-breaker panel

• With cable connection asinside cone for

– Rated voltage up to 40.5 kV– Rated short-circuit breaking

current up to 31.5 kA– Rated normal currents

of busbars and feedersup to 2000 A(2500 A on request)

• With cable connection asoutside cone for

– Rated voltage up to 24 kV– Rated short-circuit breaking

current up to 25 kA(up to 12 kV: 31.5 kA)

– Rated normal currents ofbusbars up to 2000 A(2500 A on request) andfeeders up to 1250 A

Disconnector panel


– Rated voltage up to 40.5 kV– Rated short-time withstand


of busbars and feedersup to 2000 A(2500 A on request)




– Rated normal currents ofbusbars up to 2000 A(2500 A on request) andfeeders up to 1250 A

Bus sectionalizer

for– Rated voltage up to 40.5 kV– Rated short-circuit breaking

current up to 31.5 kA– Rated normal current

of busbars up to 2000 A(2500 A on request)

Circuit-breaker panel (cable connection as inside cone)

Circuit-breaker panel (cable connection as outside cone)

3 x plug-incable,interfacetype 2 or 3

Solid-insulated bar

4 x plug-incable,interfacetype 2



Busbarcurrenttransformer

Surgearrester,plug-in type

Voltagetransformer,plug-in type

or

and2)

or

or

or

or

or

or

Surgearrester,

plug-in type

Currenttrans-

former


Capacitivevoltagedetectionsystem


1)

Busbar components

Panel connectioncomponents

Componentsafter circuit-breaker module 3)

Componentsbefore circuit-breaker module

Panel connectionversions

2 x plug-incable

1 x plug-incable

3 x plug-incable

1)

or

and2)

or

or

or

or

3) Requires cableconnection withvessel for separateinside cone

2) Not possiblewith busbarvoltagetransformer

1) Capacitivevoltagedetectionsystem

Currenttrans-

former

Voltagetransformer,disconnect-

able








Componentsafter circuit-breaker module


Surge arresteror limiter,

to be plugged inadditionally

Busbar components


9Siemens HA 35.51 · 2003


Product RangeHA

35-2

388b

eps

HA35

-238

9c e

ps

HA35

-239

0b e

ps

Bus sectionalizer

Currenttrans-

former


Busbarcomponents


Componentsbefore bus riser module

1)

Busbar components

Disconnector panel (cable connection as inside cone)


Solid-insulated bar





or

and2)

or

or

or

and2)

or

or

or

or

or

or

or

or

Surgearrester,

plug-in type

Currenttrans-

former








Disconnector panel (cable connection as outside cone)

Currenttrans-

former

Voltagetransformer,disconnect-

able

2 x plug-incable



1 x plug-incable




3 x plug-incable

1)

Busbar components



2) Not possiblewith busbarvoltagetransformer

1) Capacitivevoltagedetectionsystem



Componentsafter bus riser module

Componentsbefore cable connection module


10 Siemens HA 35.51 · 2003


Circuit-breaker panel




of busbars and feedersup to 2500 A




– Rated normal currents ofbusbars up to 2500 A andfeeders up to 1250 A

Bus sectionalizer(circuit-breaker panel and riserpanel)



current up to 31.5 kA– Rated normal currents of

busbars and feedersup to 2500 A

Bus sectionalizer

for– Rated voltage up to 36 kV– Rated short-circuit breaking

current up to 31.5 kA– Rated normal current

of busbars up to 2500 A

Bus coupler

for– Rated voltage up to 36 kV– Rated short-circuit breaking

current up to 31.5 kA– Rated normal current of

busbars up to 2500 A

Metering panel

for– Rated voltage up to 36 kV– Rated normal current of

busbars up to 2500 A

SS1

HA35

-239

1c e

ps

SS2

1) Capacitive voltagedetection system


Solid-insulated bar(e.g. Durescabar)


or

or

or

or

Surgearrester,

plug-in type

Currenttrans-

former





1)

Busbar components


Componentsafter circuit-breaker module 2)



Currenttrans-

former3)

Circuit-breaker panel (cable connection as outside cone)

SS1

HA35

-239

2c e

ps

SS2

Circuit-breaker panel (cable connection as inside cone)

1 x plug-incable



Currenttrans-

former

Voltagetransformer,

disconnectable

2 x plug-incable


3 x plug-incable

1)

or

or


Componentsafter circuit-breaker module

Busbar components

2) Switchgear vessel for separate insidecone required for cable connection with2 to 4 cables per phase

3) Ring-core current trans-former, oval design, suitable foruse from 1000 A up

Abbreviations

SS1 = Busbar 1SS2 = Busbar 2

Product Range


11Siemens HA 35.51 · 2003


HA35

-239

3b e

ps

SS1SS2


Bus sectionalizer (cable connection as inside cone)

Bus coupler






Solid-insulatedbar





Solid-insulatedbar


Currenttrans-

former

Currenttrans-

former

Surgearrester,

plug-in type

Surgearrester,

plug-in type

Bus sectionalizer

HA35

-239

4c e

ps

SS1SS2

1) 1)1) 1)

Panelconnection

versions

Panelconnection

versions

Componentsbefore bus riser module

or

or

or

or

or

or

or

or

Components beforecircuit-breakermodule

Currenttrans-

former

HA35

-239

6a e

ps

SS1SS2

Metering panel

HA35

-239

5b e

ps

SS1SS2 Components before

circuit-breakermodule

Currenttrans-

former

Bus sectionalizer, circuit-breaker panel Bus sectionalizer, bus riser panel



1) Capacitive voltagedetection system

Product Range


HA35

-239

7c e

ps

PLUSNX7

8

10

11

13

14

15

16

17

18

19

20

21

22

23

12

9

9

24

6

4

3

1

5

9

25

18

26

27

229

24

9

13

28

29 23

18

2

24

12 Siemens HA 35.51 · 2003

Single-busbar panel design

Design

Features

• Stainless-steel module ofcircuit-breaker and busbar

• Sendzimir-galvanized sheet-steel enclosure

• Self-supporting structure

• Electrical connections viacast-resin insulated, screen-ed and bolted module cou-plings


• Degree of protection– IP 65 for primary parts– IP 3XD for secondary parts

• Lateral metallic cable ductsfor control cables

• Suitable for connectingsingle and three-core cablesas well as bars

• Circuit-breaker module re-placement without gas workand without interruptingbusbar operation

• Instrument transformers canbe removed without chang-ing the positions of busbarand circuit-breaker modules

• Instrument transformers canbe removed without gas work(located outside the gas com-partments)

• Maintenance-free vacuumcircuit-breaker under normalambient conditions accordingto IEC 60694 / VDE 0670,Part 1000

• Option: plug-in busbarvoltage transformer

Panel with integrated inside cone

Panel with separate inside cone

Panel with outside cone

1 Door of low-voltage compartment

2 Mimic diagram

3 Multifunction protection relaySIPROTEC 4 type 7SJ61/ 7SJ62for protection and control

4 EMERGENCY-OFF pushbutton,mechanical

5 Door to mechanical control board

6 Cover of connection compartment

7 Busbar cover and space for plug-inbusbar voltage transformer

8 Busbar module, welded,SF6-insulated

9 Rupture diaphragm

10 Three-pole busbar system

11 Three-position disconnector,SF6-insulated, with the three switchpositions:CLOSED – OPEN – READY-TO-EARTH

12 Module coupling between busbarmodule and circuit-breaker module

13 Circuit-breaker module, welded,SF6-insulated, with integrated cableconnection

14 Vacuum interrupter of circuit-breaker

15 Pressure relief duct

16 Integrated cable connection asinside cone

17 Low-voltage compartment,standard: 935 mm high,option: 1100 mm high

18 Ring-core current transformer

19 Manual and motor operatingmechanism of three-positiondisconnector

20 Mechanical control board

21 Manual and motor operatingmechanism of circuit-breaker

22 Voltage transformer connection socket as inside cone

23 Cable connection compartment

24 Voltage transformer

25 Module coupling between circuit-breaker andcable connection module

26 Cable connection module, welded, SF6-insulated,with separate cable connection

27 Separate cable connection as inside cone

28 Voltage transformer connection socket as outside cone

29 Cable connection as outside cone


HA35

-242

5d e

ps

31

32

33

34

35

36

30

13Siemens HA 35.51 · 2003

Design

30 Busbar module with three-position disconnector

31 Module couplings between busbar module andcircuit-breaker module


33 Circuit-breaker module with connection for insidecone plug-in system

34 Voltage transformer, can be plugged in via cable


36 Multifunction protection relay SIPROTEC 4

Modular design

Single-busbar panel design


HA35

-240

1b e

ps

PLUSNX1

3

4

5

6

2

23

24

22

21

20

19

18

17

9

12

13

14

9

15

16

11

10

8

7

9

25

31

26

27

24

22

9

9

13

28

29 23

24

31

23

24

22

9

13

16

31

30

14 Siemens HA 35.51 · 2003

Features

• Stainless-steel module ofcircuit-breaker and busbar

• Sendzimir-galvanized sheet-steel enclosure

• Self-supporting structure

• Electrical connections viacast-resin insulated, screen-ed and bolted module cou-plings


• Degree of protection– IP 65 for primary parts– IP 3XD for secondary parts

• Lateral metallic cable ductsfor control cables

• Suitable for connectingsingle and three-core cablesas well as bars

• Circuit-breaker module re-placement without gas workand without interruptingbusbar operation

• Instrument transformers canbe removed without chang-ing the positions of busbarand circuit-breaker modules

• Instrument transformers canbe removed without gas work(located outside the gas com-partments)

• Maintenance-free vacuumcircuit-breaker under normalambient conditions accordingto IEC 60694 / VDE 0670,Part 1000

1 Door of low-voltage compartment

2 Mimic diagram

3 Multifunction protection relaySIPROTEC 4 type 7SJ61/ 7SJ62for protection and control

4 EMERGENCY-OFF pushbutton,mechanical

5 Door to mechanical control board

6 Cover of connection compartment

7 Busbar cover

8 Busbar module (2x), welded,SF6-insulated

9 Rupture diaphragm

10 Three-pole busbar system (2x)

11 Three-position disconnector,SF6-insulated, with the three switchpositions:CLOSED – OPEN – READY-TO-EARTH

12 Module coupling between busbarmodule and circuit-breaker module

13 Circuit-breaker module, welded,SF6-insulated, with integrated cableconnection

14 Vacuum interrupter of circuit-breaker

15 Pressure relief duct

16 Integrated cable connection asinside cone

17 Low-voltage compartment,standard: 935 mm high,option: 1100 mm high

18 Ring-core current transformer,normal or oval design

19 Manual and motor operatingmechanism of three-positiondisconnector

Panel with integrated inside cone

Panel with separate inside cone

Panel with outside cone

Panel with integrated inside cone and currenttransformers in the cable connection compartment

Design

Double-busbar panel design


15Siemens HA 35.51 · 2003

HA35

-242

6d e

ps

3332

34 35

36

37

38

39

40

32 Busbar module for SS1with three-position disconnector

33 Busbar module for SS2with three-position disconnector

34 Module couplings between busbar module SS1and circuit-breaker module

35 Module couplings between busbar module SS2and circuit-breaker module

36 Ring-core current transformer, oval design

37 Circuit-breaker module with connectionfor inside cone plug-in system

38 Voltage transformer, can be plugged in via cable


40 Multifunction protection relay SIPROTEC 4

Modular design (example)


21 Manual and motor operatingmechanism of circuit-breaker

22 Voltage transformer connectionsocket as inside cone

23 Cable connection compartment

24 Voltage transformer

25 Module coupling betweencircuit-breaker module andcable connection module

26 Cable connection module,welded, SF6-insulated, withseparate cable connection

27 Separate cable connection asinside cone

28 Voltage transformer connectionsocket as outside cone

29 Cable connection as outside cone

30 Connection cables


Continuation of the legend from page 14

Abbreviations

SS1 = Busbar 1SS2 = Busbar 2

Design

Double-busbar panel design


16 Siemens HA 35.51 · 2003

Panel interconnection, module coupling

Panel interconnection

• Designed with a modulecoupling

• Solid-insulated

• Connects the panels witheach other, as well as thevessels within a panel

Module coupling

• Single-pole, bolted-type

• Consisting of round copperwith cast-resin insulation

• Bolted busbar joint withsilicone rubber insulation

• Field control by means ofelectrically conductive layersof insulation (inside andoutside)

• Screened by earthing outerlayers with switchgear vessel

• Switchgear installation,extension or panel replace-ment without SF6-gas work

HA35

-237

6e e

ps

8

14

11

12

10

15 13

7

16

9

Module coupling(solid-insulated)

Busbar module,SF6-insulated

Busbar module,SF6-insulated

Module coupling

R-HA

35-0

74ep

s

1 Module coupling

2 Busbar module

3 Current transformer

4 Circuit-breaker module

5 End wall

6 Bushing in adjacent panel

7 Busbar conductor

8 Silicone sleeve

9 Earthing clamps

10 High-quality joint

11 Cast-resin bushing

12 Vessel wall

13 Cast-resin insulation

14 Conductive layer

15 Bolted busbar joint

16 Pressure ring

Panel interconnectionsin the circuit-breaker panel (example)

HA35

-237

5i e

ps

1

62

3

4

3

5

1

HA35

-241

1b e

ps

1 6

2

3

4

3

5

1

Module couplingsfor single-busbar panels

Module couplingsfor double-busbar panels

Components


17Siemens HA 35.51 · 2003

Switching devices

Components

Vacuum circuit-breaker

• Three-pole design

• With maintenance-free vac-uum interrupters (= primarypart of the circuit-breaker)in the SF6-filled switchgearvessel

• Force transmission from theoperating mechanism to thecircuit-breaker poles by meansof rods in the switchgearvessel

• Metal bellows, as already usedwith success a million timesfor vacuum interrupters, forgasketless separation of theSF6-insulation and the operat-ing mechanism

Operating mechanism

• Located outside the gas com-partments and behind thepanel front

• Low-lubricant level thanks toappropriate material combina-tions

• Lubricants with anti-seizureproperties and long endurance

• Generally with manual andmotor operating mechanism

• Maintenance-free under nor-mal ambient conditions (inthe switchgear room) andwith maximum permissiblenumber of operating cycles:

Switch positions of the three-position disconnector

“CLOSED”

• Closed current pathbetween busbar andvacuum circuit-breaker

• Contact blades connectedwith fixed contacts at thebusbar bushings

“READY-TO-EARTH”

• Contact blades connectedwith earthing contact ofswitchgear vessel

• Earthing and short-circuit-ing of the cable connec-tion possible by closing thevacuum circuit-breaker

“OPEN”

• Open current pathbetween busbar andvacuum circuit-breaker

• Isolating distanceswithstand prescribed testvoltages

Switching devices

Vacuum circuit-breaker(operating mechanism side open)

1 Vacuum interrupters inSF6-gas

2 Operating mechanismbox

3 Three-positiondisconnector

4 Operating mechanism

R-HA

35-0

73ep

sR-

HA35

-072

eps

Three-position disconnectorwith operating mechanism

4

3

2

1

Mechanical 10000 x

At rated normalcurrent

10000 x

At short-circuitbreaking current

50 x

Three-position disconnector

• Up to 2000 operating cycles

• Compact design thanks toshort contact gaps in SF6-gas

• Operating shaft and contactblade with common pivotpoint and reliable switchposition up to the paneloperating front

• Maintenance-free

Operating mechanism

• Switch position indication viamechanically coupled flag in-dicators

• Separate operating shafts forthe “Disconnecting” and“Ready-to-earth” functions

• Generally with manual andmotor operating mechanism


18 Siemens HA 35.51 · 2003

Multifunctionprotection relaySIPROTEC 4 7SJ63

• For stand-alone ormaster operation

• Communications andbus capability

• Functions: control,protection, indicat-ing, communicationsand measuring

• LCD for process andequipment data, inthe form of a feedermimic diagram andas text, e.g. for

– Measuring andmetering values

– Information on statusof switchgear andswitching device

– Protection data– General indications– Alarms

• Four user-program-mable function keysfor frequently per-formed actions

• Fourteen user-pro-grammable LEDs fordisplaying any de-sired data

• Two key-operatedswitches to switchbetween ”local andremote control” and”interlocked andnon-interlocked oper-ation”

• Keys for navigation inmenus and for enter-ing values

• Integrated motorcontrol by specialrelays with enhancedperformance

Legend

1 LCD

2 LEDs

3 Key-operated switches

4 Navigation keys

5 Control keys

6 Function keys

7 LCD (text display)

4

5

6

2

3

R-HA

35-1

02ep

s

• Operating mechanisms forthree-position disconnectorsand circuit-breakers

• Electrical interlocks, option-ally mechanical interlocks forsingle busbar

• Conventional controlsystem or via multifunctionprotection relays

Multifunction protection re-lay SIPROTEC 4 7SJ600/7SJ602

• User-friendly operating pro-gram DIGSI 4 for configura-tion and analysis

• Communications and buscapability

• Functions: control, protec-tion, indicating, communica-tions and measuring

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

• Four user-programmableLEDs for displaying anydesired data

• Operation and fault indica-tion memory

• Fault recording

• Circuit-breaker control

Multifunction protectionrelay SIPROTEC 4 7SJ61/7SJ62

• For stand-alone or masteroperation

• Communications and buscapability

• Functions: control, protec-tion, indicating, communica-tions and measuring

• LCD (4 text lines) for processand equipment data, in theform of a feeder mimic dia-gram 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 frequentlyperformed actions

• Seven user-programmableLEDs for displaying anydesired data

• Keys for navigation in menusand for entering values

Multifunction protection relays SIPROTEC 4

R-HA

35-1

04ep

sR-

HA35

-103

eps

1

7

2

6

4

4

2

7

Protection, control, indicating and measuring equipment (examples)

Multifunction protection relaySIPROTEC 4 7SJ600/7SJ602

Multifunction protection relaySIPROTEC 4 7SJ61/7SJ62

Multifunctionprotection relaySIPROTEC 4 7SJ63

Components


19Siemens HA 35.51 · 2003

Indicating and measuring equipment

Ready-for-serviceindicator

• Self-monitoring; easy toread

• Independent of tempera-ture and pressure varia-tions

• Responds only tochanges in gas density

• Contactless measure-ment by means of a BEROproximity switch

Mode of operation

A measurement box in theswitchgear vessel that issealed gas-tight registersthe SF6-gas density, whichcrucially influences the in-sulating capacity. By meansof a coupling magnet,expansion of the measure-ment box is transmitted tothe outside to a solenoidarmature, which then acti-vates the BERO proximityswitch.

Voltage detectionsystems

For voltage detection ac-cording to IEC 61 243-5 /VDE 0682 Part 415

• Detection systems(option):

– LRM oder HR system– Integrated voltage

detection systems,LRM system: CAPDIS-S1and -S2+

LRM or HR system

• With voltage indicator(LRM or HR system)

• Verification of safe isola-tion from supply phaseby phase by insertion ineach socket pair

• Voltage indicator flasheswhen high voltage ispresent

• Indicator suitable forcontinuous operation

• Safe-to-touch

• Routine-tested

• Measuring system andvoltage indicator can betested

• Without auxiliary voltage

Features of integratedvoltage detection systems

Common features

• Maintenance-free

• Integrated display withoutauxiliary power supply

• Integrated, repeated testingof the interfaces (self-testing)

• With integrated function testby pressing the “Display-Test”pushbutton, without auxil-iary power supply

• With integrated 3-phase testsocket for phase comparison(also suitable for plug-involtage indicator)

• Degree of protectionIP 54, temperature range–25 °C to +55 °C

Features of CAPDIS-S1

• Without auxiliary powersupply

• With indication “A1” to “A4”(see legend)

• Without ready-for-servicemonitoring

• Without signalling relay(thus without auxiliarycontacts)

• Integrated circuit capacity

Features of CAPDIS-S2+

• With indication “A1” to “A4”(see legend)

• With indication “ERROR” incase of absent externalauxiliary power supply

• With ready-for-servicemonitoring (auxiliary powersupply required)

• With integrated signallingrelay for signalling “M1” to“M4” (auxiliary power supplyrequired):

– “M1”: Operating voltagepresent at phases L1, L2, L3

– “M2”: Voltage not presentat L1, L2 and L3(= active zero indication)

– “M3”: Earth fault or voltagefailure, e.g. in one phase

– “M4”: Absence of auxiliarypower supply (when voltagepresent or not present)

Ready-for-service indicator

1 Measurement box

2 Magneticcoupling

3 BERO proximityswitch

4 Voltage indicator,LRM system

Voltage detection systems

HA35

-242

4b e

ps�C1

ULE �C2 U2

L2L1

L3

Voltage detectionvia capacitive voltage divider (principle)

–C1 Capacitive coupling electrode integrated into bushing

–C2 Capacity of the connection leads and of the voltage indicatoror voltage detection system to earth

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

U2 = UA =Voltage at the interface of the switchgear or at the voltageindicator or voltage detection system

HA35

-254

2a e

ps

32

1

4

Voltage indicator, LRM system(inserted)

R-HA

35-0

84a

eps

Principle of operationof gas monitoringwith ready-for-service indicator

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

Ready-for-serviceindicator

plugged-inHR system

mountedCAPDIS-S1

CAPDIS-S1 CAPDIS-S2+

A1

A2

A3

A4

Shown symbolsof the integrated indicatorsCAPDIS-S1 and -S2+

A1 Operating voltagepresent at L1, L2, L3

A2 Voltage not presentat L1, L2, L3

A3 Earth fault or failure in L1,operating voltage at L2, L3

A4 Voltage (not operatingvoltage) presentHA

35-2

543

eps

L2L1 L3 L2L1 L3

Components


20 Siemens HA 35.51 · 2003

Mechanical control board

• Located behind the paneldoor

• Opening of door switches offthe electrical control(protection functionprevails)

• Integrated mechanicalswitch position indica-tors in the mimicdiagram

• Clear arrangement ofaccess openings andcontrol elements tothe associated switchposition indicators

• Ergonomically favour-able height of all con-trol elements

Interlocks

Interlocking, eitherpanel-internal or acrossthe panels, is alwayseffected electrically.

In the case of single-busbar panels, panel-internal, mechanicalinterlocking is optionallyavailable, besides electricalinterlocking.

Mechanical interlockingfunctions (optional)

Operation of the three-position disconnector(disconnecting and earth-ing function) is inter-locked with the circuit-breaker.

The operating lever ofthe three-position dis-connector can only beinserted if the circuit-breaker is open and canonly be removed in adefined end position ofthe three-positiondisconnector.

The circuit-breaker canbe closed as soon as theoperating lever has beenremoved and the coverof the three-positiondisconnector has beenclosed.

For safety reasons, themechanical ON push-button of the circuit-breaker is covered andsealed.

De-earthing the feedercan be blocked with thelock-in of the circuit-breaker. This locks electri-cal and mechanical oper-ation at the panel as wellas switching off thecircuit-breaker fromremote. The lock-in ismechanically interlockedwith the “EARTHED” posi-tion of the three-positiondisconnector, with theresult that the mechani-cal locking of the circuit-breaker can only beactivated in the case of“feeder earthed”.

If an undervoltage trip-ping is planned, a possi-bility of locking is alsoplanned.

1 Switch position indicatorCLOSED/OPEN for three-positiondisconnector

2 Operating shaft CLOSED/OPENfor three-position disconnector

3 Operating shaftOPEN/READY-TO-EARTHfor three-position disconnector

4 Switch position indicatorOPEN/READY-TO-EARTHfor three-position disconnector

5 Mimic diagram

6 Interlocking for preselectionto 2 and 3

7 Switch position indicatorCLOSED/OPEN for circuit-breaker

8 Manual charging for circuit-breaker

9 ON pushbutton for circuit-breakerwith sealable cap, mechanical

10 Locking devicefor “feeder earthed”

11 OFF pushbutton forcircuit-breaker, mechanical

12 “Spring charged” indicator forcircuit-breaker

13 Operating cycle counter forcircuit-breaker

R-HA

35-0

88a

eps

1 2 3 4

5

6

10

11

12

13

7

9

8

R-HA

35-0

87a

eps

Mechanical control boardfor single-busbar panels

Mechanical control boardwith open panel door

Components


21Siemens HA 35.51 · 2003

Instrument transformers

Current transformers

• Design:– Ring core as the carrier of

the secondary winding– Current path corresponds

to primary winding

• Located outside theprimary enclosure(switchgear vessel)

• Free of dielectricallystressed cast-resin parts(due to design)

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

• According toIEC 60 044-1 /VDE 0414 Part 1

• Certifiable

Voltage transformers

• Cast-resin insulated

• Inductive type

• Metal-enclosed,safe to touch

• Plug-in type

• Located outside theprimary enclosure(switchgear vessel)

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

• For 80 % of the ratedshort-duration power-frequency withstandvoltage at rated fre-quency (busbar voltagetransformers)

• Repeat test at 80 % ofthe rated short-durationpower-frequency with-stand voltage withmounted voltage trans-former in the case ofbusbar voltage trans-formers

• According toIEC 60 044-2 /VDE 0414 Part 2

• Certifiable

Ring-core current transformers

Inductive voltage transformers

R-HA

35-0

75ep

sR-

HA35

-076

eps

For outside cone plug-in system

R-HA

35-0

79ep

s

For inside cone plug-in system

R-HA

35-0

78ep

s

For inside cone plug-in system

For outside cone plug-in system

Components


22 Siemens HA 35.51 · 2003

Panel connection

3

HA35

-241

2c e

ps

1 2

4

HA35

-241

3c e

ps

4

HA35

-241

4c e

psHA

35-2

416d

eps

6

5

4

HA35

-241

5c e

ps

Inside cone plug-in system

For circuit-breaker anddisconnector panels

Cable connection

• Suitable for bushings accord-ing to DIN EN 50 181

• For connection cross-sectionsup to 630 mm2

• Up to 4 cable sockets and1 voltage transformer socketpossible in each phase

• Designed as cable plug– For inside cone plug-in

system– Metal-enclosed– Fully insulated

• Multiple connections withsockets for identical interfacetypes

Bar connection

• One bar per phase

• Solid-insulated design

Surge arresters

Each cable socket can beequipped with a surge arresterinstead of a cable plug

Cable testing

Cable testing equipment canbe connected after removingthe insulating cover or thevoltage transformer connec-tion cable

Connection versions Cable testing

4 cables per phase (option: surge arrester)Interface type 2

2 cables per phase (option: surge arrester)Interface type 2 or 3

3 cables per phase (option: surge arrester)Interface type 2 or 3

1 cable per phase (option: surge arrester)Interface type 2 or 3

1 solid-insulatedbar per phase

1 Cable sockets

2 Voltage transformer socket

3 Cable plug, interface type 2

4 Cable plug,plug type 2 or 3

5 Silicone sleeve

6 Solid-insulated bar

HA35

-241

7b e

ps

Voltage transformersocket forcable testing

Components


23Siemens HA 35.51 · 2003

Panel connection

HA35

-241

8b e

ps

2

1

HA35

-241

9b e

ps

3

HA35

-242

0b e

ps

4

HA35

-242

1b e

ps

5 6

Outside cone plug-insystem

For circuit-breaker anddisconnector panels

Cable connection

• Designed as cable T-plugsuitable for bushingswith outside cone as inter-face type C according toEN 50 181

• Connection cross-sections upto 630 mm2 (larger cross-sections on request)

• Double or triple cable con-nections possible

Surge arresters

• Can be plugged into thecable T-plug of a single ordouble cable connection

• 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 thecable T-plug of a single ordouble cable connection

• Surge limiters are recom-mended if motors areconnected

Cable testing

Cable testing equipment canbe connected after removingthe insulating stopper fromthe cable T-plug

Connection versions Cable testing

Cable testing on themounted cable T-plug

3 cables per phase

2 cables per phase(surge arrester or limiter canbe plugged in additionally)

1 cable per phase(surge arrester or limiter canbe plugged in additionally)

1 Outside cone

2 Triple cable connection

3 Double cable connection

4 Single cable connection

5 Measuring bolt

6 Insulating cap

Components


24 Siemens HA 35.51 · 2003

Standards

Standards, specifications, guidelines

Type of service location

NXPLUS switchgear can be usedas an indoor installation inaccordance with IEC 61 936 /VDE 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 isa place outdoors or indoorsthat is 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.

Insulating capacity

The insulating capacity is veri-fied by testing the switchgearwith rated values of short-duration power-frequencywithstand voltage and light-ning impulse withstand voltageaccording to IEC 60 094 /VDE 0670 Part 1000(see following table):

All parts subjected to high volt-age within the switchgear areinsulated against the earthedoutside enclosure.

This insulation permits installa-tion of the switchgear at anyaltitude above sea level withoutdetrimental influences on thedielectric strength. This alsoapplies to cable connection.

Table – Insulating capacity

Rated voltage kV(r.m.s. value)

7.2 12 15 17.5 24 36 40.5

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

– Across isolating distances kV 23 32 40 45 60 80 90

– Between phases and to earth kV 20 28 36 38 50 70 85

Rated lightning impulse withstand voltage (peak value)

– Across isolating distances kV 70 85 105 110 145 195 218

– Between phases and to earth kV 60 75 95 95 125 170 185

Standards

The NXPLUS 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.

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

** Withdrawn standard 1) Circuit-breaker

Overview of standards (December 2002)

2) Disconnector and earthing switch 3) Voltage detection systems

IEC standard VDE standard EN standard

up to now current in future current in future current

Switchgear 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 1) IEC 60 056 ** IEC 62 271-100 IEC 62 271-100 VDE 0670 P. 101 to 106 VDE 0671-100 EN 60 056

2) IEC 60 129 ** IEC 62 271-102 IEC 62 271-102 VDE 0670 Part 2 VDE 0671-102 EN 60 129

3) IEC 61 243-5 IEC 61 243-5 IEC 61 243-5 VDE 0682 Part 415 VDE 0682 Part 415 EN 61 243-5

Degree ofprotection

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

Currenttransformers

IEC 60 044-1 IEC 60 044-1 IEC 60 044-1 VDE 0414 Part 1 VDE 0414 Part 1 EN 60 044-1

Voltagetransformers

IEC 60 044-2 IEC 60 044-2 IEC 60 044-2 VDE 0414 Part 2 VDE 0414 Part 2 EN 60 044-2


25Siemens HA 35.51 · 2003

Resistance to internalarc faults

Due to the single-pole enclosureof external components andthe SF6-insulation of switchingdevices, the probability of faultsin NXPLUS fixed-mountedcircuit-breaker 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

• The three-position discon-nector and the vacuumcircuit-breaker provideshort-circuit-proof earthingof the feeder

Should arcing occur in spite ofthis, the pressure is relieved to-wards the rear into a duct.

In the unlikely event of a faultinside the module vessel, theenergy conversion in the caseof an internal arc fault is minorthanks to the SF6-insulation,i.e.approximately only ½ com-pared to air. The pressure reliefin the rear wall of the modulevessel operates in the rangeof 2 to 3.5 bar. The escapinggases are discharged to therear into a duct.

The pressure relief duct divertsthe gases upwards.

Current-carrying capacity

• According to IEC 60 298 / VDE0670 Part 6 or IEC 60 694 /VDE 0670 Part 1000, the ratednormal current refers to thefollowing ambient tempera-tures:

– Maximum valueof 24-h mean + 35 °C

– Maximum value + 40 °C

• The current-carrying capacityof the panels and busbars de-pends on the ambient temper-ature outside the enclosure.


Standards

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 / VDE 0670Part 6

• All criteria of the abovestandards are met

Aseismic capacity (optional)

NXPLUS switchgear can be up-graded for regions at risk fromearthquakes.

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, thecategory 1 required responsespectrum according to IABGTA13-TM-002/98 covers thefollowing response spectra:

• Uniform BuildingCode zone 3

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

• GTS – 1.013 ENDESA, Chile

• VDE 0670 Part 111

3


26 Siemens HA 35.51 · 2003


Climate and ambientconditions

NXPLUS switchgear is fullyenclosed and insensitive toclimatic conditions.

• All medium-voltage devicesare installed in a gas-tight,welded stainless-steelswitchgear vessel which isfilled with SF6-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

IEC 60529 / VDE 0470 Part 1

Type of protection Degree of protection

I P 3 X Dsss

Protection against solid foreign bodiesProtected against ingress of solid foreign bodies,diameter W 2.5 mm (test probe with diameter 2.5 mmmust not ingress)

Protection against waterNo specification

Protection against electric shockProtected against access to hazardousparts with a wire (test probe with diameter 1 mm,length 100 mm, must be sufficientlyclear of hazardous parts)

I P 6 5ss

Protection against solid foreign bodiesDust-tight: No ingress of dust

Protection against electric shockProtected against access to hazardousparts with a wire(test probe with diameter 1 mm must not ingress)

Protection against waterProtected against water jets;water directed against the enclosure fromany direction in the form of a jet mustnot have any harmful effect

Standards

Protection against solidforeign bodies, electric shockand water

NXPLUS switchgear compliesaccording to

with the following degrees ofprotection:

IEC 60 529 VDE 0470 Part 1

IEC 60 298 VDE 0670 Part 6

Degree ofprotection

Type of protection

IP 3XD for outer enclosure

IP 65 for all parts subjectedto high voltage

See adjacent table for explana-tions about the degrees of pro-tection

27Siemens HA 35.51 · 2003

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 designationsused are trademarks orproduct names ofSiemens AG or othersuppliers.

If not stated otherwise,all dimensions in thiscatalog are given in mm.

Responsible for

Technical contents:Herbert SoensSiemens AG, Dept. PTD M 2 S2Erlangen

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

Printed in GermanyKGK 10.03 5.0 VO/- 24 En 100793 6101/D6301

Notes

www.siemens.com/medium-voltage-switchgear

If you have any questions aboutPower Transmission and Distribution,our Customer Support Centeris available around the clock

Tel.: +49 180 / 524 70 00Fax: +49 180 / 524 24 71

E-mail: [email protected]/ptd-support

(Subject to charges,e.g.: 12 ct/min.)

Published by

Siemens AG

Power Transmission and DistributionMedium Voltage DivisionPostfach 32 20

91050 ErlangenGermany

Order No.: E50001-K1435-A511-A4-7600

fixed-mounted circuit-breaker up to 40.5 kv, sf -insulated · offshore wind generators ... nxplus...

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