Insulated - Siemens

Fixed-Mounted Circuit-Breaker 

Switchgear Type NXPLUS 

up to 40.5 kV, SF 6 -Insulated 

Medium-Voltage 

Switchgear 

Catalog HA 35.51 

2003 

Supersedes: 

Catalog HA 35.51 · 2001

R-HA35-085b eps 

R-HA35-086b eps 

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

Contents 

Application 

Page 

Application 

Types, typical uses 2 to 4 

Types 

NXPLUS fixed-mounted circuit-breaker switchgear 

is a three-pole, metal-enclosed, metal-clad, SF 6 -insulated switchgear 

for indoor installation in single-busbar and double-busbar design. 

Requirements 

Features, safety, technology 4 and 5 

Technical Data 

Electrical data, dimensions 6 

Room planning 7 

Product Range 

Single-busbar panels 8 and 9 

Double-busbar panels 10 and 11 

Design 

Single-busbar panel design 12 and 13 

Double-busbar panel design 14 and 15 

Components 

Panel interconnection, module coupling 16 

Switching devices 17 

Protection, control, indicating 

and measuring equipment 18 and 19 

Mechanical control board 20 

Instrument transformers 21 

Panel connection 22 and 23 

Standards 

Standards, specifications, guidelines 24 to 26 

Notes 

27 

Single-busbar 

panel 

Double-busbar 

panel 

© Siemens AG 2003 

2 Siemens HA 35.51 · 2003 

Features 

• Environmental independence 

thanks to welded stainlesssteel 

switchgear vessel 

without seals 

• Compact design thanks to 

SF 6 -insulation 

• Maintenance-free design 

thanks to 

– Hermetically welded 


– Maintenance-free switching 

devices 

• Innovations thanks to 

– Numerical substation control 

and protection systems 

– Combined protection and 

control systems

R-HA35-093a eps 

R-HA35-090 eps 



Application 

Typical uses 

Application 

Public power supply system 


Application 

Offshore wind generators 

(photo: Vestas Denmark) 

NXPLUS switchgear 

with maximum equipment 

Application Steelworks 

Siemens HA 35.51 · 2003 3


Application 

Requirements 

Typical uses 

Fixed-mounted circuit-breaker switchgear 

NXPLUS is used in transformer 

and 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 

Features 

Environmental independence 

Welded switchgear vessels 

made of stainless steel without 

seals and enclosed cable plugs 

make NXPLUS switchgear 

• Insensitive to aggressive ambient 

conditions such as salt 

water, humidity, dust and 

temperature 

• Hermetically tight to ingress 

of foreign bodies such as dust 

and dirt 

• Independent of site altitude 

Compact design 

Thanks to the SF 6 -insulation, 

compact dimensions are 

possible up to 40.5 kV. 

Thus, 

• Existing switchgear rooms 

can be used effectively 

• Reduced costs for new 

constructions 

• Expensive city-area space is 

saved 

Maintenance-free design 

Switchgear vessels designed 

as sealed pressure systems, 

maintenance-free switching 

devices and enclosed cable 

plugs ensure 

• Maximized power supply 

reliability 

• Personal safety 

• Sealed-for-life design 

according to IEC 60 298 

• Installation, operation, 

extension and replacement 

without SF 6 -gas work 

• Reduced operating costs 

• Cost-efficient investment 

• No maintenance cycles 

• Reduced overall LCC 

(Life-Cycle Cost) 

Innovations 

The use of numerical 

substation control and 

protection systems and 

combined protection and 

control devices ensure 

• Clear integration in process 

control systems 

• Flexible and highly simplified 

adaptation to new 

system conditions and 

thus to cost-efficient 

operation 

4 Siemens HA 35.51 · 2003


Requirements 

Safety 

Technology 

Personal safety 

• Safe-to-touch and hermetically 

sealed primary enclosure 

• All high-voltage parts including 

the cable terminations, 

busbars and voltage transformers 

are surrounded by 

earthed layers or metal enclosures 

• Capacitive voltage detection 

system for verification of safe 

isolation from supply 

• Operating mechanisms and 

auxiliary switches safely accessible 

outside the primary 

enclosure (switchgear vessel) 

• Protective system interlock to 

prevent operation when the 

switchgear enclosure is open 

• Standard degree of protection 

IP 65 (primary part) 

and IP 3XD (secondary part) 

according to IEC 60 529 / 

VDE 0470 Part 1 

• High resistance to internal 

arcs by logical mechanical 

interlocks and tested switchgear 

enclosure 

• Arc-fault-tested panels 



• Logical mechanical and / or 

electrical interlocks prevent 

maloperation 

Operating safety 

• Hermetically sealed primary 

enclosure independent of 

environmental effects 

(dirt, moisture and small 

animals) 

• Maintenance-free in an 

indoor environment 

(IEC 60 694 / VDE 0670 

Part 1000) 

• Operating mechanisms of 

switching devices accessible 

outside the switchgear 

vessel (primary enclosure) 

• Metal-enclosed, plug-in inductive 

voltage transformers 

mounted outside the 

gas compartments 

• Ring-core current transformers 

mounted outside 

the gas compartments 

• Complete logical mechanical 

interlocking system 

• Welded switchgear vessels, 

sealed for life 

• Minimum fire load 

• Type and routine-tested 

• Standardized, NC production 

processes 

• Quality assurance 

in accordance with 

DIN EN ISO 9001 

• More than 300,000 

switchgear panels of 

Siemens in operation 

worldwide for many years 

• Successfully tested for use 

down to –20 °C 

• Option: Aseismic design 

General 

• Three-pole enclosure of the 

primary part consisting of a 

switchgear vessel made of 

stainless steel 

• Insulating gas SF 6 

• Three-position switch as 

busbar disconnector and 

feeder earthing switch 

• Make-proof earthing by 

means of the vacuum circuitbreaker 

• Outgoing and incoming 

feeder panel width: 600 mm 

• Hermetically welded switchgear 

vessel made of stainless 

steel without seals 

• Single-pole, solid-insulated, 

screened, bolted-type 

module coupling 

• Cable connection with inside 

or outside cone plug-in 

systems or connection of 

solid-insulated bars 

• Wall-standing or freestanding 

arrangement 

• Cable connection access from 

front or rear 

• Doors left or right-hinged 

• Existing switchgear extendable 

on both sides without 

modification of panels 

• Internal panel control cables 

laid in metallic cable ducts 

Modular design 

• Circuit-breaker module 

replacement possible 

without SF 6 -gas work and 

without interrupting 

busbar operation 

• Low-voltage compartment 

can be removed without 

interrupting the bus wires 

Instrument transformers 

• Can be removed without 

altering the positions of the 

busbar and circuit-breaker 

modules (outside the gas 

compartments) 

Vacuum circuit-breaker 

• Maintenance-free under 

normal ambient conditions 

according to IEC 60694 / 

VDE 0670 Part 1000 

• No relubrication or 

readjustment 

• Up to 10,000 operating 

cycles 

• Vacuum-tight for life 

Interlocks 

• According to IEC 60 298 / 


• Electrical interlocks since 

all mechanisms are motor 

operating mechanisms 

• Manual emergency operating 

mechanisms with 

enabling key S1 

Siemens HA 35.51 · 2003 

5



Electrical data 

Dimensions in mm 

Rated values 

Single-busbar panels 


60 

1145 395 

Rated 

voltage 

max. kV 

7.2 12 24 36 40.5 

NX PLUS 

Rated 

frequency 

50 Hz 1 ) 

1 

2 

280 280 

350 

935 

Rated short-duration powerfrequency 

withstand voltage 

kV 

20 28 50 70 85 

Rated lightning impulse 


kV 

60 75 125 170 185 

2450 

Rated short-circuit 

breaking current 

max. 31.5 kA 

1515 

Rated short-time 

withstand current, 3 s 


making current 

Rated peak 

withstand current 

Rated normal 

current of busbar 

max. A 

max. 31.5 kA 

max. 80 kA 

max. 80 kA 

2000 

2 

) 

2000 

2 

) 

2000 

2 

) 

2000 

2 

) 

2000 

80 

HA35-2427c eps 

B1 

Panel width B1 

Circuit-breaker panel 

Disconnector panel 

Bus sectionalizer panel 

1600 

1 End wall 2 Busbars 

600 mm 

600 mm 

900 mm 

Rated normal 

current of feeders 

max. A 

2000 

2 

) 

2000 

2 

) 

2000 

2 

) 

2000 

2 

) 

2000 

Double-busbar panels 


60 

1385 395 

Rated 

voltage 

max. kV 

7.2 12 24 36 

NX PLUS 

Rated 

frequency 

50 Hz 1 ) 

1 

230 

2 

230 

230 

350 

935 

Rated short-duration powerfrequency 


kV 

20 28 50 70 

Rated lightning impulse 


kV 

60 75 125 170 

2600 



Rated short-time 

withstand current, 3 s 


making current 

max. 31.5 kA 

max. 31.5 kA 

max. 80 kA 

HA35-2428b eps 

1515 

Rated peak 

withstand current 

Rated normal 

current of busbar 

Rated normal 

current of feeders 

max. A 

max. A 

max. 80 kA 

2500 2500 2500 2500 

2500 2500 2500 2500 

80 

B2 

Panel width B2 

Circuit-breaker panel 3 ) 

Bus coupler panel 3 ) 

Bus sectionalizer panel, 

system 1 or system 2 4 ) 

Metering panel 

1840 

1 End wall 2 Busbars 

600 mm 

600 mm 

600 mm 

300 mm 

1) 60 Hz on request 

2) 2500 A on request 

3) 1200 mm for 2300 / 2500 A 

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




Room planning 

Room planning for single-busbar See table on page 6 for dimension B1 

B1 

80 

80 

80 

80 

³50*** 

³500** 

³50*** 

³500** 

³50*** 

³500** 

80 

80 

Single-row arrangement (top view) 

for single-busbar Face-to-face arrangement (top view) 

for single-busbar 

Room planning for double-busbar B2 

B2 

80 

80 

³50*** 

³500** 

Single-row arrangement (top view) 

for double-busbar switchgear 

 

B2 

B2 

80 

80 

³50*** 

³500** 

³50*** 

³500** 

80 

80 

B2 

B2 

See table on page 6 for dimension B2 

Face-to-face arrangement (top view) 

for double-busbar switchgear 

* Aisle width 

** Free space next to last installed panel, 

either on left or right of switchgear row 

*** Recommended: W 500 mm 

Siemens HA 35.51 · 2003 7 

epsHA35-2407a ³1600* 1600 ³50 

 

³1600* 1840 ³250 

HA35-2408a eps 


³50 1600 

³1600* 1600 ³50 


³250 1840 

³1600* 1840 ³250


Product Range 



• With cable connection as 

inside 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 feeders 

up to 2000 A 

(2500 A on request) 


outside cone for 

– Rated voltage up to 24 kV 


current up to 25 kA 

(up to 12 kV: 31.5 kA) 

– Rated normal currents of 

busbars up to 2000 A 

(2500 A on request) and 

feeders up to 1250 A 

Disconnector panel 




– Rated short-time withstand 




up to 2000 A 







(up to 12 kV: 31.5 kA) 



(2500 A on request) and 


Bus sectionalizer 

for 




– Rated normal current 

of busbars up to 2000 A 


HA35-2387b eps HA35-2386b eps 

Circuit-breaker panel (cable connection as inside cone) 

or 

or 

or 

and 

2 ) 

Voltage 

transformer, 

plug-in type 

Surge 

arrester, 

plug-in type 

Busbar 

current 

transformer 

or 

or 

or 

or 

1 x plug-in 

cable, 

interface 

type2or3 

2 x plug-in 

cable, 

interface 

type2or3 

3 x plug-in 

cable, 

interface 

type2or3 

4 x plug-in 

cable, 

interface 

type 2 

Solidinsulated 

bar 

Surge 

arrester, 

plug-in type 

Circuit-breaker panel (cable connection as outside cone) 

or 

or 

or 

and 

2 ) 

Capacitive 

voltage 

detection 

system 

1 x plug-in 

cable, 

interface 

type 2 

Capacitive 

voltage 

detection 

system 

1 x plug-in 

cable, 

interface 

type 2 

Voltage 

transformer, 

plug-in type 

Surge 

arrester, 

plug-in type 

Busbar 

current 

transformer 

or 

or 

Busbar components 

Panel connection 

versions 



versions 

1) Capacitive 

voltage 

detection 

system 

1 ) 

1 ) 

3 x plug-in 

cable 

2 x plug-in 

cable 

1 x plug-in 

cable 

Voltage 

transformer, 

plug-in type 

Voltage 

transformer, 

disconnectable 

Surge arrester 

or limiter, 

to be plugged in 

additionally 

2) Not possible 

with busbar 

voltage 

transformer 

Components 

before circuit-breaker module 

Components 

after circuit-breaker module 3 ) 


components 

Current 

transformer 

Components 


Components 

after circuit-breaker module 


components 

Current 

transformer 

3) Requires cable 

connection with 

vessel for separate 

inside cone 



Product Range 


Disconnector panel (cable connection as inside cone) 



Busbar 

components 

Components 

before bus riser module 

Components 

before circuitbreaker 

module 


versions 

1 ) 


components 

or 

Capacitive 

voltage 

detection 

system 

1 x plug-in 

cable, 

interface 

type 2 

or 

1 x plug-in 

cable, 

interface 

type2or3 

2 x plug-in 

cable, 

interface 

type2or3 

Voltage 

transformer, 

plug-in type 

Current 

transformer 


Capacitive 

voltage 

detection 

system 

Current 

transformer 

or 

Voltage 

transformer, 

plug-in type 

or 

3 x plug-in 

cable, 

interface 

type2or3 

or 

Surge 

arrester, 

plug-in type 

or 

4 x plug-in 

cable, 

interface 

type 2 


and 

2 ) 

Busbar 

current 

transformer 

or 


bar 

Surge 

arrester, 

plug-in type 

Disconnector panel (cable connection as outside cone) 



versions 

1 ) 

Components 

before cable connection module 

Components 

after bus riser module 


components 

Capacitive 

voltage 

detection 

system 

3 x plug-in 

cable 

Voltage 

transformer, 


Current 

transformer 

or 

1 x plug-in 

cable, 

interface 

type 2 

or 

2 x plug-in 

cable 

or 

Voltage 

transformer, 

plug-in type 

or 

1 x plug-in 

cable 


or 

and 

2 ) 

Surge 

arrester, 

plug-in type 

Busbar 

current 

transformer 

1) Capacitive 

voltage 

detection 

system 


or limiter, 


additionally 

2) Not possible 

with busbar 

voltage 

transformer 


9


Product Range 










up to 2500 A 






(up to 12 kV: 31.5 kA) 


busbars up to 2500 A and 



(circuit-breaker panel and riser 

panel) 







busbars and feeders 

up to 2500 A 


for 




– Rated normal current 

of busbars up to 2500 A 

Bus coupler 

for 




– Rated normal current of 



Circuit-breaker panel (cable connection as inside cone) 

Busbar 

current 

transformer 


or 

or 

or 

or 

SS1 

SS2 


versions 

1 ) 

1 x plug-in 

cable, 

interface 

type2or3 

2 x plug-in 

cable, 

interface 

type2or3 

3 x plug-in 

cable, 

interface 

type2or3 

4 x plug-in 

cable, 

interface 

type 2 


bar 

(e.g. Duresca 

bar) 

Voltage 

transformer, 

plug-in type 

Surge 

arrester, 

plug-in type 

Circuit-breaker panel (cable connection as outside cone) 


SS1 

SS2 

1 ) 

Components 


Components 

after circuit-breaker module 2 ) 


components 

Current 

transformer 

Components 

after circuit-breaker module 


components 

Current 

transformer 

3 ) 


for 


– Rated normal current of 



Busbar 

current 

transformer 

or 

3 x plug-in 

cable 

2 x plug-in 

cable 

Voltage 

transformer, 


Current 

transformer 

or 

1 x plug-in 

cable 


or limiter, 


additionally 

Abbreviations 

SS1 = Busbar 1 


1) Capacitive voltage 

detection system 

2) Switchgear vessel for separate inside 

cone required for cable connection with 

2 to 4 cables per phase 

3) Ring-core current transformer, 

oval design, suitable for 

use from 1000 A up 



Product Range 


SS1 

SS2 

Bus sectionalizer (cable connection as inside cone) 

Bus sectionalizer, circuit-breaker panel 

Components 


Bus sectionalizer, bus riser panel 

Components 

before bus riser module 

1 ) 1 ) Panel connection 

1 ) 

components 

1 ) 


components 

Panel 

connection 

versions 

Voltage 

transformer, 

plug-in type 

Current 

transformer 

Panel 

connection 

versions 

Voltage 

transformer, 

plug-in type 

Current 

transformer 

1 x plug-in 

cable, 

interface 

type2or3 

1 x plug-in 

cable, 

interface 

type2or3 

or 

2 x plug-in 

cable, 

interface 

type2or3 

or 

2 x plug-in 

cable, 

interface 

type2or3 

or 

3 x plug-in 

cable, 

interface 

type2or3 

or 

3 x plug-in 

cable, 

interface 

type2or3 

or 

4 x plug-in 

cable, 

interface 

type 2 

or 

4 x plug-in 

cable, 

interface 

type 2 


or 


bar 

Surge 

arrester, 

plug-in type 

or 


bar 

Surge 

arrester, 

plug-in type 


Bus coupler 


SS1 

SS2 

Components before 

circuit-breaker 

module 

SS1 

SS2 

Components before 


module 

SS1 

SS2 




Current 

transformer 

Current 

transformer 

1) Capacitive voltage 

detection system 


11


Design 

Single-busbar panel design 

Features 

• Stainless-steel module of 

circuit-breaker and busbar 

• Sendzimir-galvanized sheetsteel 

enclosure 

• Self-supporting structure 

• Electrical connections via 

cast-resin insulated, screened 

and bolted module couplings 




• Degree of protection 

– IP 65 for primary parts 

– IP 3XD for secondary parts 

• Lateral metallic cable ducts 

for control cables 

• Suitable for connecting 

single and three-core cables 

as well as bars 

• Circuit-breaker module replacement 

without gas work 

and without interrupting 


• Instrument transformers can 

be removed without changing 

the positions of busbar 

and circuit-breaker modules 


be removed without gas work 

(located outside the gas compartments) 

• Maintenance-free vacuum 

circuit-breaker under normal 

ambient conditions according 

to IEC 60694 / VDE 0670, 

Part 1000 

• Option: plug-in busbar 

voltage transformer 

1 

2 

3 

4 

5 

6 


7 

NX PLUS 

1 Door of low-voltage compartment 

2 Mimic diagram 

3 Multifunction protection relay 

SIPROTEC 4 type 7SJ61/ 7SJ62 

for 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-in 

busbar voltage transformer 

8 Busbar module, welded, 

SF 6 -insulated 

9 Rupture diaphragm 

10 Three-pole busbar system 

11 Three-position disconnector, 

SF 6 -insulated, with the three switch 

positions: 

CLOSED – OPEN – READY-TO-EARTH 

12 Module coupling between busbar 

module and circuit-breaker module 

13 Circuit-breaker module, welded, 

SF 6 -insulated, with integrated cable 

connection 

14 Vacuum interrupter of circuit-breaker 

15 Pressure relief duct 

16 Integrated cable connection as 

inside cone 

17 Low-voltage compartment, 

standard: 935 mm high, 

option: 1100 mm high 

18 Ring-core current transformer 

19 Manual and motor operating 

mechanism of three-position 

disconnector 

20 Mechanical control board 


mechanism of circuit-breaker 

8 

9 

10 

11 

12 

13 

14 

9 

15 

16 

9 

25 

18 

26 

9 

27 

9 

13 

18 

28 

29 23 

24 

Panel with integrated inside cone 

Panel with separate inside cone 

Panel with outside cone 

22 Voltage transformer connection socket as inside cone 

23 Cable connection compartment 

24 Voltage transformer 

25 Module coupling between circuit-breaker and 

cable connection module 

26 Cable connection module, welded, SF 6 -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 

17 

18 

19 

20 

21 

22 

23 

24 

24 

22 



Design 

Single-busbar panel design 

Modular design 

30 

30 Busbar module with three-position disconnector 

31 Module couplings between busbar module and 

circuit-breaker module 


33 Circuit-breaker module with connection for inside 

cone plug-in system 

34 Voltage transformer, can be plugged in via cable 


36 Multifunction protection relay SIPROTEC 4 

31 

32 

HA35-2425d eps 

33 

36 

35 

34 


13


Design 

Double-busbar panel design 

Features 

• Stainless-steel module of 

circuit-breaker and busbar 

• Sendzimir-galvanized sheetsteel 

enclosure 

• Self-supporting structure 

• Electrical connections via 

cast-resin insulated, screened 

and bolted module couplings 





– IP 65 for primary parts 

– IP 3XD for secondary parts 

• Lateral metallic cable ducts 

for control cables 

• Suitable for connecting 

single and three-core cables 

as well as bars 

• Circuit-breaker module replacement 

without gas work 

and without interrupting 



be removed without changing 

the positions of busbar 

and circuit-breaker modules 


be removed without gas work 

(located outside the gas compartments) 

• Maintenance-free vacuum 

circuit-breaker under normal 

ambient conditions according 

to IEC 60694 / VDE 0670, 

Part 1000 

1 

2 

3 

4 

5 

6 

NX PLUS 


1 Door of low-voltage compartment 


3 Multifunction protection relay 

SIPROTEC 4 type 7SJ61/ 7SJ62 

for 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, 


9 Rupture diaphragm 

10 Three-pole busbar system (2x) 

11 Three-position disconnector, 

SF 6 -insulated, with the three switch 

positions: 

CLOSED – OPEN – READY-TO-EARTH 

12 Module coupling between busbar 

module and circuit-breaker module 

13 Circuit-breaker module, welded, 

SF 6 -insulated, with integrated cable 

connection 

14 Vacuum interrupter of circuit-breaker 

15 Pressure relief duct 

16 Integrated cable connection as 

inside cone 

17 Low-voltage compartment, 

standard: 935 mm high, 

option: 1100 mm high 

18 Ring-core current transformer, 

normal or oval design 


mechanism of three-position 

disconnector 

7 

8 

10 

9 

11 

12 

13 

14 

9 

15 

16 

9 

25 

31 

26 

9 

27 

9 

13 

31 

28 

29 23 

9 

13 

16 

31 

30 

Panel with integrated inside cone 

Panel with separate inside cone 

Panel with outside cone 

Panel with integrated inside cone and current 

transformers in the cable connection compartment 

17 

18 

19 

20 

21 

22 

23 

24 

24 

22 

24 

22 

23 

24 



Design 

Double-busbar panel design 

Modular design (example) 

32 

33 

32 Busbar module for SS1 

with three-position disconnector 

33 Busbar module for SS2 

with three-position disconnector 

34 Module couplings between busbar module SS1 

and circuit-breaker module 

35 Module couplings between busbar module SS2 

and circuit-breaker module 

36 Ring-core current transformer, oval design 

37 Circuit-breaker module with connection 

for inside cone plug-in system 

38 Voltage transformer, can be plugged in via cable 


40 Multifunction protection relay SIPROTEC 4 

34 35 

36 


37 

40 

39 

38 

Continuation of the legend from page 14 



mechanism of circuit-breaker 

22 Voltage transformer connection 

socket as inside cone 

23 Cable connection compartment 

24 Voltage transformer 

25 Module coupling between 

circuit-breaker module and 

cable connection module 

26 Cable connection module, 

welded, SF 6 -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 

30 Connection cables 


Abbreviations 




15



Components 

Panel interconnection, module coupling 

Panel interconnection 

• Designed with a module 

coupling 

• Solid-insulated 

• Connects the panels with 

each other, as well as the 

vessels within a panel 

Module coupling 

• Single-pole, bolted-type 

• Consisting of round copper 

with cast-resin insulation 

• Bolted busbar joint with 

silicone rubber insulation 

• Field control by means of 

electrically conductive layers 

of insulation (inside and 

outside) 

• Screened by earthing outer 

layers with switchgear vessel 

• Switchgear installation, 

extension or panel replacement 

without SF 6 -gas work 

1 

2 

3 

4 

5 

Panel interconnections 

in the circuit-breaker panel (example) 

6 

3 

1 

1 6 

2 

3 

3 

4 

1 

5 

Module couplings 

for single-busbar panels 

HA35-2375i eps 

Module couplings 

for double-busbar panels 



1 Module coupling 

2 Busbar module 

3 Current transformer 

4 Circuit-breaker module 

5 End wall 

6 Bushing in adjacent panel 

7 

8 

9 

10 

11 

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 

16 

Busbar module, 


15 

14 

13 


(solid-insulated) 

12 

HA35-2376e eps 

Busbar module, 




Components 

Switching devices 


• Three-pole design 

• With maintenance-free vacuum 

interrupters (= primary 

part of the circuit-breaker) 

in the SF 6 -filled switchgear 

vessel 

• Force transmission from the 

operating mechanism to the 

circuit-breaker poles by means 

of rods in the switchgear 

vessel 

• Metal bellows, as already used 

with success a million times 

for vacuum interrupters, for 

gasketless separation of the 

SF 6 -insulation and the operating 

mechanism 

Operating mechanism 

• Located outside the gas compartments 

and behind the 

panel front 

• Low-lubricant level thanks to 

appropriate material combinations 

• Lubricants with anti-seizure 

properties and long endurance 

• Generally with manual and 

motor operating mechanism 

• Maintenance-free under normal 

ambient conditions (in 

the switchgear room) and 

with maximum permissible 

number of operating cycles: 

Mechanical 

10000 x 

R-HA35-073 eps R-HA35-072 eps 

Switching devices 


(operating mechanism side open) 

3 

1 

4 

2 

1 Vacuum interrupters in 

SF 6 -gas 

2 Operating mechanism 

box 

3 Three-position 

disconnector 

4 Operating mechanism 

At rated normal 

current 

10000 x 

At short-circuit 


50 x 

Three-position disconnector 

• Up to 2000 operating cycles 

• Compact design thanks to 

short contact gaps in SF 6 -gas 

• Operating shaft and contact 

blade with common pivot 

point and reliable switch 

position up to the panel 

operating front 

• Maintenance-free 

Operating mechanism 

• Switch position indication via 

mechanically coupled flag indicators 

• Separate operating shafts for 

the “Disconnecting” and 

“Ready-to-earth” functions 

• Generally with manual and 

motor operating mechanism 

Three-position disconnector 

with operating mechanism 

Switch positions of the three-position disconnector 

“CLOSED” 

• Closed current path 

between busbar and 

vacuum circuit-breaker 

• Contact blades connected 

with fixed contacts at the 

busbar bushings 

“OPEN” 

• Open current path 

between busbar and 


• Isolating distances 

withstand prescribed test 

voltages 

“READY-TO-EARTH” 

• Contact blades connected 

with earthing contact of 


• Earthing and short-circuiting 

of the cable connection 

possible by closing the 



17


Components 

Protection, control, indicating and measuring equipment (examples) 

• Operating mechanisms for 

three-position disconnectors 

and circuit-breakers 

• Electrical interlocks, optionally 

mechanical interlocks for 

single busbar 

• Conventional control 

system or via multifunction 

protection relays 

Multifunction protection relay 

SIPROTEC 4 7SJ600/7SJ602 

• User-friendly operating program 

DIGSI 4 for configuration 

and analysis 

• Communications and bus 

capability 

• Functions: control, protection, 

indicating, communications 

and measuring 

• LCD (2 text lines) and keyboard 

for local operation, 

configuration and display 

• Four user-programmable 

LEDs for displaying any 

desired data 

• Operation and fault indication 

memory 

• Fault recording 

• Circuit-breaker control 

Multifunction protection 

relay SIPROTEC 4 7SJ61/7SJ62 

• For stand-alone or master 

operation 

• Communications and bus 

capability 

• Functions: control, protection, 

indicating, communications 

and measuring 

• LCD (4 text lines) for process 

and equipment data, in the 

form of a feeder mimic diagram 

and as text, e.g. for 

– Measuring and metering 

values 

– Information on status of 

switchgear and switching 

device 

– Protection data 

– General indications 

– Alarms 


function keys for frequently 

performed actions 

• Seven user-programmable 

LEDs for displaying any 

desired data 

• Keys for navigation in menus 

and for entering values 

18 Siemens HA 35.51 · 2003 

Multifunction 

protection relay 

SIPROTEC 4 7SJ63 

• For stand-alone or 

master operation 

• Communications and 

bus capability 

• Functions: control, 

protection, indicating, 

communications 

and measuring 

• LCD for process and 

equipment data, in 

the form of a feeder 

mimic diagram and 

as text, e.g. for 

– Measuring and 

metering values 

– Information on status 

of switchgear and 

switching device 

– Protection data 

– General indications 

– Alarms 


function keys 

for frequently performed 

actions 

• Fourteen user-programmable 

LEDs for 

displaying any desired 

data 

• Two key-operated 

switches to switch 

between ”local and 

remote control” and 

”interlocked and 

non-interlocked operation” 

• Keys for navigation in 

menus and for entering 

values 

• Integrated motor 

control by special 

relays with enhanced 

performance 

Legend 

1 LCD 

2 LEDs 

3 Key-operated switches 

4 Navigation keys 

5 Control keys 

6 Function keys 

7 LCD (text display) 

2 

7 

7 

2 

1 

2 

3 




Multifunction protection relays SIPROTEC 4 

4 



4 

6 



4 

5 

6 

Multifunction 

protection relay 

SIPROTEC 4 7SJ63



Components 

Indicating and measuring equipment 

Ready-for-service 

indicator 

• Self-monitoring; easy to 

read 

• Independent of temperature 

and pressure variations 

• Responds only to 

changes in gas density 

• Contactless measurement 

by means of a BERO 

proximity switch 

Mode of operation 

A measurement box in the 

switchgear vessel that is 

sealed gas-tight registers 

the SF 6 -gas density, which 

crucially influences the insulating 

capacity. By means 

of a coupling magnet, 

expansion of the measurement 

box is transmitted to 

the outside to a solenoid 

armature, which then activates 

the BERO proximity 

switch. 

Voltage detection 

systems 

For voltage detection according 

to IEC 61 243-5 / 

VDE 0682 Part 415 

• Detection systems 

(option): 

– LRM oder HR system 

– Integrated voltage 

detection systems, 

LRM system: CAPDIS-S1 

and -S2+ 

LRM or HR system 

• With voltage indicator 

(LRM or HR system) 

• Verification of safe isolation 

from supply phase 

by phase by insertion in 

each socket pair 

• Voltage indicator flashes 

when high voltage is 

present 

• Indicator suitable for 

continuous operation 

• Safe-to-touch 

• Routine-tested 

• Measuring system and 

voltage indicator can be 

tested 

• Without auxiliary voltage 

Features of integrated 

voltage detection systems 

Common features 

• Maintenance-free 

• Integrated display without 

auxiliary power supply 

• Integrated, repeated testing 

of the interfaces (selftesting) 

• With integrated function test 

by pressing the “Display-Test” 

pushbutton, without auxiliary 

power supply 

• With integrated 3-phase test 

socket for phase comparison 

(also suitable for plug-in 

voltage indicator) 


IP 54, temperature range 

–25°Cto+55°C 

Features of CAPDIS-S1 

• Without auxiliary power 

supply 

• With indication “A1” to “A4” 

(see legend) 

• Without ready-for-service 

monitoring 

• Without signalling relay 

(thus without auxiliary 

contacts) 

• Integrated circuit capacity 

Features of CAPDIS-S2+ 

• With indication “A1” to “A4” 

(see legend) 

• With indication “ERROR” in 

case of absent external 

auxiliary power supply 

• With ready-for-service 

monitoring (auxiliary power 

supply required) 

• With integrated signalling 

relay for signalling “M1” to 

“M4” (auxiliary power supply 

required): 

– “M1”: Operating voltage 

present at phases L1, L2, L3 

– “M2”: Voltage not present 

at L1, L2 and L3 

(= active zero indication) 

– “M3”: Earth fault or voltage 

failure, e.g. in one phase 

– “M4”: Absence of auxiliary 

power supply (when voltage 

present or not present) 


Ready-for-service indicator 

Voltage detection systems 

1 

2 

L1 

L2 

L3 

–C1 

U LE –C2 U2 

A1 

A2 

A3 

A4 

Stainless-steel vessel 

filled with SF 6 -gas, 

gauge pressure 

50 kPa at 20 °C 

Principle of operation 

of gas monitoring 

with ready-for-service indicator 

Voltage indicator, LRM system 

(inserted) 

plugged-in 

HR system 

Voltage detection 

via capacitive voltage divider (principle) 

1 Measurement box 

2 Magnetic 

coupling 

3 BERO proximity 

switch 


4 Voltage indicator, 

LRM system 

–C1 Capacitive coupling electrode integrated into bushing 

–C2 Capacity of the connection leads and of the voltage indicator 

or voltage detection system to earth 

U LE = U N / 3 during rated operation in the three-phase system 

U 2 = U A = Voltage at the interface of the switchgear or at the voltage 

indicator or voltage detection system 

CAPDIS-S1 CAPDIS-S2+ 

L1 L2 L3 L1 L2 L3 

Shown symbols 

of the integrated indicators 

CAPDIS-S1 and -S2+ 

HA35-2543 eps 

3 

Ready-forservice 

indicator 

4 

mounted 

CAPDIS-S1 

A1 Operating voltage 

present at L1, L2, L3 

A2 Voltage not present 

at L1, L2, L3 

A3 Earth fault or failure in L1, 

operating voltage at L2, L3 

A4 Voltage (not operating 

voltage) present 


19




Components 

Mechanical control board 

• Located behind the panel 

door 

• Opening of door switches off 

the electrical control 

(protection function 

prevails) 

• Integrated mechanical 

switch position indicators 

in the mimic 

diagram 

• Clear arrangement of 

access openings and 

control elements to 

the associated switch 

position indicators 

• Ergonomically favourable 

height of all control 

elements 

1 2 3 4 

5 

6 

7 

8 

9 

Interlocks 

Interlocking, either 

panel-internal or across 

the panels, is always 

effected electrically. 

In the case of singlebusbar 

panels, panelinternal, 

mechanical 

interlocking is optionally 

available, besides electrical 

interlocking. 


for single-busbar panels 

10 

11 

12 

13 


with open panel door 

Mechanical interlocking 

functions (optional) 

Operation of the threeposition 

disconnector 

(disconnecting and earthing 

function) is interlocked 

with the circuitbreaker. 

The operating lever of 

the three-position disconnector 

can only be 

inserted if the circuitbreaker 

is open and can 

only be removed in a 

defined end position of 

the three-position 

disconnector. 

The circuit-breaker can 

be closed as soon as the 

operating lever has been 

removed and the cover 

of the three-position 

disconnector has been 

closed. 

For safety reasons, the 

mechanical ON pushbutton 

of the circuitbreaker 

is covered and 

sealed. 

De-earthing the feeder 

can be blocked with the 

lock-in of the circuitbreaker. 

This locks electrical 

and mechanical operation 

at the panel as well 

as switching off the 

circuit-breaker from 

remote. The lock-in is 

mechanically interlocked 

with the “EARTHED” position 

of the three-position 

disconnector, with the 

result that the mechanical 

locking of the circuitbreaker 

can only be 

activated in the case of 

“feeder earthed”. 

If an undervoltage tripping 

is planned, a possibility 

of locking is also 

planned. 

1 Switch position indicator 

CLOSED/OPEN for three-position 

disconnector 

2 Operating shaft CLOSED/OPEN 

for three-position disconnector 

3 Operating shaft 

OPEN/READY-TO-EARTH 



OPEN/READY-TO-EARTH 



6 Interlocking for preselection 

to 2 and 3 


CLOSED/OPEN for circuit-breaker 

8 Manual charging for circuitbreaker 

9 ON pushbutton for circuit-breaker 

with sealable cap, mechanical 

10 Locking device 

for “feeder earthed” 

11 OFF pushbutton for 

circuit-breaker, mechanical 

12 “Spring charged” indicator for 


13 Operating cycle counter for 








Components 

Instrument transformers 

Current transformers 

• Design: 

– Ring core as the carrier of 

the secondary winding 

– Current path corresponds 

to primary winding 

• Located outside the 

primary enclosure 

(switchgear vessel) 

• Free of dielectrically 

stressed cast-resin parts 

(due to design) 

• Mounting locations 

– At the busbar 

– At the panel connection 

• According to 

IEC 60 044-1 / 


• Certifiable 

Voltage transformers 

• Cast-resin insulated 

• Inductive type 

• Metal-enclosed, 

safe to touch 

• Plug-in type 

• Located outside the 

primary enclosure 

(switchgear vessel) 

• Mounting locations 

– At the busbar 

– At the panel connection 

• For80%oftherated 

short-duration powerfrequency 

withstand 

voltage at rated frequency 

(busbar voltage 

transformers) 

• Repeat test at 80 % of 

the rated short-duration 

power-frequency withstand 

voltage with 

mounted voltage transformer 

in the case of 

busbar voltage transformers 

• According to 

IEC 60 044-2 / 


• Certifiable 

Ring-core current transformers 

For inside cone plug-in system 

For outside cone plug-in system 

Inductive voltage transformers 

For inside cone plug-in system 

For outside cone plug-in system 


21


Components 


Inside cone plug-in system 

For circuit-breaker and 

disconnector panels 

Cable connection 

• Suitable for bushings according 

to DIN EN 50 181 

• For connection cross-sections 

up to 630 mm 2 

• Up to 4 cable sockets and 

1 voltage transformer socket 

possible in each phase 

• Designed as cable plug 

– For inside cone plug-in 

system 

– Metal-enclosed 

– Fully insulated 

• Multiple connections with 

sockets for identical interface 

types 

Bar connection 

• One bar per phase 

• Solid-insulated design 

Surge arresters 

Each cable socket can be 

equipped with a surge arrester 

instead of a cable plug 

Cable testing 

Cable testing equipment can 

be connected after removing 

the insulating cover or the 

voltage transformer connection 

cable 


1 2 

3 


4 


4 

Connection versions 

4 cables per phase (option: surge arrester) 

Interface type 2 


Interface type 2 or 3 




Cable testing 

4 



Voltage transformer 

socket for 

cable testing 

1 cable per phase (option: surge arrester) 


1 solid-insulated 

bar per phase 

5 

6 

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 



Components 


Outside cone plug-in 

system 

For circuit-breaker and 

disconnector panels 

Cable connection 

• Designed as cable T-plug 

suitable for bushings 

with outside cone as interface 

type C according to 

EN 50 181 

• Connection cross-sections up 

to 630 mm 2 (larger crosssections 

on request) 

• Double or triple cable connections 

possible 

Surge arresters 

• Can be plugged into the 

cable T-plug of a single or 

double cable connection 

• Surge arresters are recommended 

if, at the same time, 

– The cable system is directly 

connected to the overhead 

line 

– The protective range of the 

arrester at the terminal tower 

of the overhead line does not 

cover the switchgear 

Connection versions 

1 

2 

3 cables per phase 

3 


Cable testing 


5 6 

Cable testing on the 

mounted cable T-plug 

Surge limiters 

• Can be plugged into the 

cable T-plug of a single or 

double cable connection 

• Surge limiters are recommended 

if motors are 

connected 

2 cables per phase 

(surge arrester or limiter can 

be plugged in additionally) 


Cable testing 

Cable testing equipment can 

be connected after removing 

the insulating stopper from 

the cable T-plug 

4 

1 cable per phase 

(surge arrester or limiter can 

be plugged in additionally) 


1 Outside cone 

2 Triple cable connection 

3 Double cable connection 

4 Single cable connection 

5 Measuring bolt 

6 Insulating cap 


23


Standards 

Standards, specifications, guidelines 

Standards 

The NXPLUS switchgear 

complies with the relevant 

standards and specifications 

applicable at the time of type 

tests. 

In accordance with the harmonization 

agreement reached by 

the EU countries, their national 

specifications conform to the 

IEC standard. 

Overview of standards (December 2002) 

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 of IEC 60 529 IEC 60 529 IEC 60 529 VDE 0470 Part 1 VDE 0470 Part 1 EN 60 529 

protection 

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

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

transformers 

* In future, all standards for switching 

devices and switchgear will be Voltage 

summarized in IEC 62 271 

transformers 

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

** Withdrawn standard 1) Circuit-breaker 2) Disconnector and earthing switch 3) Voltage detection systems 

Type of service location 

NXPLUS switchgear can be used 

as an indoor installation in 

accordance with IEC 61 936 / 

VDE 0101: 

• Outside lockable electrical 

service locations at places 

which are not accessible to 

the public. Enclosures of 

switchgear can only be 

removed with tools. 

• Inside lockable electrical 

service locations. A lockable 

electrical service location is 

a place outdoors or indoors 

that is reserved exclusively for 

housing electrical equipment 

and which is kept under lock 

and key. Access is restricted to 

authorized personnel and persons 

who have been properly 

instructed in electrical engineering. 

Untrained or unskilled 

persons may only enter 

under the supervision of authorized 

personnel or properly 

instructed persons. 

Insulating capacity 

The insulating capacity is verified 

by testing the switchgear 

with rated values of shortduration 

power-frequency 

withstand voltage and lightning 

impulse withstand voltage 


VDE 0670 Part 1000 

(see following table): 

Table – Insulating capacity 

Rated voltage 

(r.m.s. value) 

kV 

All parts subjected to high voltage 

within the switchgear are 

insulated against the earthed 

outside enclosure. 

This insulation permits installation 

of the switchgear at any 

altitude above sea level without 

detrimental influences on the 

dielectric strength. This also 

applies to cable connection. 

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 


Current-carrying capacity 

• According to IEC 60 298 / VDE 

0670 Part 6 or IEC 60 694 / 

VDE 0670 Part 1000, the rated 

normal current refers to the 

following ambient temperatures: 

– Maximum value 

of 24-h mean + 35 °C 

– Maximum value + 40 °C 

• The current-carrying capacity 

of the panels and busbars depends 

on the ambient temperature 

outside the enclosure. 

Tests for resistance to internal 

arc faults 

• Tests for verifying resistance to 

internal arc faults should establish 

proper protection for 

operating personnel 

• Tests for resistance to internal 

arc faults can be agreed 

between the owner and 

manufacturer in accordance 

with IEC 60 298 / VDE 0670 

Part 6 

• All criteria of the above 

standards are met 

Resistance to internal 

arc faults 

Due to the single-pole enclosure 

of external components and 

the SF 6 -insulation of switching 

devices, the probability of faults 

in NXPLUS fixed-mounted 

circuit-breaker switchgear is 

considerably lower than in 

former switchgear types, as 

• There are no effects due to 

external influences such as 

– Pollution layers 

– Moisture 

– Small animals and foreign 

bodies 

• Maloperation is practically 

excluded by logical arrangement 

of the operating 

mechanism elements 

• The three-position disconnector 

and the vacuum 

circuit-breaker provide 

short-circuit-proof earthing 

of the feeder 

Should arcing occur in spite of 

this, the pressure is relieved towards 

the rear into a duct. 

In the unlikely event of a fault 

inside the module vessel, the 

energy conversion in the case 

of an internal arc fault is minor 

thanks to the SF 6 -insulation, 

i.e.approximately only ½3 

compared 

to air. The pressure relief 

in the rear wall of the module 

vessel operates in the range 

of 2 to 3.5 bar. The escaping 

gases are discharged to the 

rear into a duct. 

The pressure relief duct diverts 

the gases upwards. 

Aseismic capacity (optional) 

NXPLUS switchgear can be upgraded 

for regions at risk from 

earthquakes. 

For upgrading, earthquake 

qualification testing has been 

carried out in accordance with 

the following standards: 

• IEC 68-3-3, 1993 

• IEC 68-2-6, 1995 

• IABG TA13-TM-002/98 

(guide) 

Within the range of the prevailing 

earthquake frequencies 

from1Hzto35Hz,the 

category 1 required response 

spectrum according to IABG 

TA13-TM-002/98 covers the 

following response spectra: 

• Uniform Building 

Code zone 3 

• Seismic Requirements 

Spec. 9067; Department of 

Water & Power, Los Angeles 

• GTS – 1.013 ENDESA, Chile 

• VDE 0670 Part 111 


25


Standards 


Protection against solid 

foreign bodies, electric shock 

and water 

NXPLUS switchgear complies 

according to 

IEC 60 529 VDE 0470 Part 1 

IEC 60 298 VDE 0670 Part 6 

with the following degrees of 

protection: 

Degree of 

protection 

IP 3XD 

IP 65 

Type of protection 

for outer enclosure 

for all parts subjected 

to high voltage 

See adjacent table for explanations 

about the degrees of protection 

IEC 60529 / VDE 0470 Part 1 

Type of protection 

Protection against solid foreign bodies 

Protected against ingress of solid foreign bodies, 

diameter W 2.5 mm (test probe with diameter 2.5 mm 

must not ingress) 

Protection against water 

No specification 

Protection against electric shock 

Protected against access to hazardous 

parts with a wire (test probe with diameter 1 mm, 

length 100 mm, must be sufficiently 

clear of hazardous parts) 

Protection against solid foreign bodies 

Dust-tight: No ingress of dust 

Protection against electric shock 

Protected against access to hazardous 

parts with a wire 

(test probe with diameter 1 mm must not ingress) 

Protection against water 

Protected against water jets; 

water directed against the enclosure from 

any direction in the form of a jet must 

not have any harmful effect 

Degree of protection 

IP 3XD 

sss 

IP 65 

ss 

Climate and ambient 

conditions 

NXPLUS switchgear is fully 

enclosed and insensitive to 

climatic conditions. 

• All medium-voltage devices 

are installed in a gas-tight, 

welded stainless-steel 

switchgear vessel which is 

filled with SF 6 -gas 

• Live parts outside the switchgear 

vessel are provided with 

single-pole enclosure 

• At no point can creepage currents 

flow from high-voltage 

potentials to earth 

• Operating mechanism parts 

which are functionally important 

are made of corrosionresistant 

materials 

• Bearings in operating mechanisms 

are designed as dry 

bearings and do not require 

lubrication 


Notes 

If not stated otherwise on 

the individual pages of this 

catalog, we reserve the right 

to include modifications, 

especially regarding the 

stated values, dimensions 

and weights. 

Drawings are not binding. 

All product designations 

used are trademarks or 

product names of 

Siemens AG or other 

suppliers. 

If not stated otherwise, 

all dimensions in this 

catalog are given in mm. 

Responsible for 

Technical contents: 

Herbert Soens 

Siemens AG, Dept. PTDM2S2 

Erlangen 

General editing: 

Gabriele Pollok 

Siemens AG, Dept. PTD CC T 

Erlangen 

Printed in Germany 

KGK 10.03 5.0 VO/- 24 En 100793 6101/D6301 


27

If you have any questions about 

Power Transmission and Distribution, 

our Customer Support Center 

is available around the clock 

Tel.: +49 180 / 524 70 00 

Fax: +49 180 / 524 24 71 

E-mail: support@ptd.siemens.de 

www.siemens.com/ptd-support 

(Subject to charges, 

e.g.: 12 ct/min.) 

Published by 

Siemens AG 

Power Transmission and Distribution 

Medium Voltage Division 

Postfach 32 20 

91050 Erlangen 

Germany 

www.siemens.com/medium-voltage-switchgear 

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

Insulated - Siemens

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