siemens catalog for the cb

Medium-VoltageEquipment

Catalog HG 11.511998

Vacuum Circuit-Breaker Modules

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Vacuum Circuit-BreakerModules

© Siemens AG 1998Catalog HG 11.51 · 1998

Medium-VoltageEquipment

Description

NXACT Vacuum Circuit-Breaker Modules12 kV, Type 3AJ

AppendixCatalog IndexConditions of Sale and Delivery

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NXACT VacuumCircuit-BreakerModule

0/2�Siemens HG 11.51 · 1998

vacuum circuit-breaker module, 12 kV

Features

DIN EN ISO 9001The vacuum circuit-breakermodules are subjected to aroutine inspection exceedingthe requirements laid down inthe standards:

• Several hundred operatingcycles per routine inspection

• Current measured valueacquisition – such as, forexample, operating speedand contact travel – duringthe run-in phase in com-parison with the values of thelong-term tests

Additional features

• Stable measured values withnarrow tolerance limits

• Low power loss

• Uniform, long-term thermalstability.

Quality standard

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NXACT vacuum circuit-breaker module, 12 kV

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Contents Page

Applications, typical uses, features, designs 1/2

Switching duties,typical applications 1/3

Technical data 1/4

Construction and mode of operation 1/5 – 1/8

Additional components 1/9

Secondary equipment 1/10 – 1/11

Schematic diagrams 1/12 – 1/13

Standards 1/14

DIN EN ISO 14001NX ACT vacuum circuit-breaker modules areenvironmentally com-patible:

• In terms of selection ofmaterials and manu-facturing processes

• Environmentally neutralin operation and duringswitching processes

• Simple to dispose of atthe end of their servicelife.

Environmental compatibility

NX ACT vacuum circuit-breaker modules aremaintenance-free:

• Under normalambient conditionsaccording to IEC 60694 and VDE0670 Part 1000

• Up to 10,000 operat-ing cycles:

– No relubrication– No readjustment– Nominal performance

remains within toler-ance even at veryhigh operating fre-quencies or afterlong periods ofidleness.

Maintenance-free

Panel of an NXAIR withdrawable circuit-breakermodule switchgear with NXACT vacuum circuit-breaker module

BASF Ludwigshafen

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Description

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General

Description

Applications

• Universal circuit-breakermodule for all commonmedium-voltage switchgear

• As three-pole medium-voltage circuit-breakers for allswitching duties in indoorinstallations

• For switching all resistive,inductive and capacitivecurrents.

Typical uses

• Overhead transmission lines• Cables• Transformers• Capacitors• Filter circuits *• Motors• Reactor coils

Features

• Integrated, mechanicalinterlocks between operatingmechanisms.

• Integrated, mechanicalswitch position indicationsfor circuit-breaker, with-drawable part and earthingswitch function (optional).

• Easy to withdraw, since onlywithdrawable part is moved.

• Fixed interlocking of circuit-breaker module with aswitchpanel is possible.

• Manual or motor operatingmechanism (optional for theoperating mechanisms).

• Enforced connection of low-voltage plug with the switch-panel, as soon as themodule is installed in apanel.

• Maintenance-free operatingmechanisms within scope ofswitching cycles.

Designs

* Filter circuits cause an increase involtage at the series-connectedswitching device.

Vacuum circuit-breaker module, 12 kV, 1250 A

Tulip-type contact, 1250 A

Vacuum circuit-breaker module, 12 kV, 2500 A

Tulip-type contact, 2500 A

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Switching duties, typical applications

Switching duties Auto-reclosing

Used in overhead line systemsto eliminate transient faults orshort-circuits, such as thosecaused by thunderstorms,lightning or animals.The vacuum circuit-breakermodules (for switching duty K)have such short dead timesbetween opening and closing,even at full short-circuit cur-rent, that the interruption in thesupply has no appreciableeffect on the load.If auto-reclosing is unsuccess-ful, the affected circuit iscompletely disconnected.According to the relevantstandards, circuit-breakermodules designed for auto-reclosing must be able toperform the test sequence O-t-CO-t’-CO; in the case ofunsuccessful auto-reclosing,only the sequence O-t-CO isrequired.t = 0.3 s, t ’ = 3 min.

Multiple auto-reclosing

The vacuum circuit-breakermodules are also suitable formultiple auto-reclosing, forexample the followingsequence O-t-CO-t’-CO-t ’-CO-t ’-CO.t = 0.3 s, t ’ = 15 s

Interruption of short-circuitcurrents(With very high initial rates-of-rise of the transient recoveryvoltage)When interrupting short-circuitcurrents arising from faultsimmediately behind a trans-former, generator or currentlimiting reactor, firstly it ispossible for the full short-circuitcurrent to develop and, se-condly, the initial rate-of-rise ofthe transient recovery voltagemay be considerably higherthan the values specified in IEC 60056 and VDE 0670.Initial rates-of-rise up to 10 kV/μs may occur, or evenhigher values in the inter-ruption of short-circuits on theload side of reactors. Thecircuit-breaker modules arealso designed for these typesof stresses.

Switching of overhead linesand cables

When unloaded overhead linesand cables are being discon-nected, the relatively lowcapacitive currents are inter-rupted without restrike and,therefore, without overvoltage.

Switching of transformers

Due to the special type ofcontact material used, thechopping current of circuit-breaker modules is only 4 to 5 A, which means that nodangerous overvoltages arisewhen unloaded transformersare disconnected.

Switching of capacitors

Vacuum circuit-breaker mo-dules are primarily designed forswitching operations in capa-citive circuits. They are able todisconnect capacitor banks ofthe highest ratings withoutrestrike and, therefore, withoutovervoltages.The interruption of capacitivecurrents has been tested up to600 A and up to rated voltagesof 12 kV. This value dependson the test facility used.Operating experience hasshown that as a guiding valuein general capacitive currentsup to 70 % of the rated breakernormal current can becontrolled.When capacitors are con-nected in parallel, currentswhich have the same level asshort-circuit currents can occurwhich, due to their high rate-of-rise, may cause damage to thesystem components.Making currents up to a peakvalue of 10 kA are permissible;higher values on request.

Switching of filter circuits

When interrupting filter circuitsor disconnecting reactor-connected capacitor banks,loading of the circuit-breakermodules by recovery voltage isgreater than with purecapacitors.The reason for this is that thereactor and the capacitor areconnected in series.This has to be taken intoaccount when selecting thecircuit-breaker module withrespect to its rated voltage.

Switching of motors

If small high-voltage motors aredisconnected during start-up,switching overvoltages mayoccur. This affects high-voltagemotors with a starting currentof up to 600 A.The level of these overvoltagescan be reduced to safe valuesby means of special surgelimiters (see Catalog HG 21“Overvoltage Protection”).Overvoltage protection is notrequired for motors withindividual p.f. correction.

The switching duty of thecircuit-breaker module de-pends, for example, on its typeof operating mechanism:

• Stored-energy operatingmechanism

– For synchronization and rapidload transfer (U)

– For auto-reclosing (K)

• Snap-action operatingmechanism (snap-actionCLOSED, stored-energyOPEN)

– For normal closing andopening.

Synchronization

The closing times (for switch-ing duties U and K) are so shortthat, at the instant the contactstouch, the systems beingparalleled are still sufficiently insynchronism.

Rapid load transfer

(= transfer of loads from onesource of supply to anotherwithout interruption of service)The vacuum circuit-breakermodules (switching duties U and K) have the very shortclosing and opening timeswhich are required for thispurpose.Tests conforming to therelevant standards have beencarried out on the vacuumcircuit-breaker modules forswitching duty “U”. Theyincluded tests using thesequence O-t-CO-t’-CO withfull rated short-circuit breakingcurrent.O = OpeningC = ClosingCO = Closing with subsequent

opening in the circuit-breaker module’s short-est close-open time.

t, t' = Dead time of 3 min.

U = Synchronization and rapid load transfer (closing time ≤ 90 ms).

K = Auto-reclosing

Description

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The values of rated normal currentlisted above were defined inaccordance with the requirementsof VDE 0670 Part 1000 or IEC 60 694 at an ambient temper-ature of 40 °C and apply for NXAIRwithdrawable circuit-breakermodule switchgear.In the case of enclosed-typeswitchgear, the information of theswitchgear manufacturer shall beapplicable.In the event of ambient temper-atures <40 °C, higher rated normalcurrents may be carried (seediagram above).

Technical data

Electricaldata, productrange

NXACT vacuum circuit-breakermodules have been designed toconform to the normal operatingconditions laid down in the relevantstandards VDE 0670 Part 1000 andIEC 60694.

Ambient temperature– Maximum: + 40 °C– Maximum 24-hour

mean: + 35 °C– Minimum: – 25 °CRelative air humidity (measuredaverage values):– Over 24 hours: max. 95 % – Over 1 month: max. 90 %

Vacuum circuit- Equipped withbreaker module

Closing time < 75 ms 2) –

Opening time < 65 ms 2) 1st shunt release< 50 ms 2) 2nd shunt release

Arcing time < 15 ms –

Break time < 80 ms 1st shunt release< 65 ms 2nd shunt release

Dead time 300 ms –

CLOSE/OPEN time < 75 ms 1st shunt release< 60 ms 2nd shunt release

Minimum command duration 45 ms Closing solenoid40 ms 1st shunt release20 ms 2nd shunt release

Pulse time to breaker tripping signal > 15 ms 1st shunt release> 10 ms 2nd shunt release

Spring-charging time for electrical operation < 10 s –

Synchronous operation error between the poles 2 ms –

2) Shorter operating times on request.

Description

Operating times

Rated 12 kVvoltage Ur

Rated lightning 75 kVimpulsevoltage Up

Rated short-time 28 kVpower-frequencyvoltage Ud

Rated short-circuit 50 kA 63 kAmaking current Ima

Rated short-circuit 20 kA 1) 25 kA 1)breaking current Isc up to 50x 25x 50x 50x

Rated normal 1250 A 1250 A 1250 A 2500 Acurrent Ir

Pole-centre distance 210 mm 210 mm 210 mm 210 mm

Ambientconditions

Condensation may occur occasion-ally under these conditions.The ambient atmosphere must notbe seriously contaminated withdust, smoke, corrosive orflammable gases, vapors or salt.Occasional exposure to conden-sation once per month for approxi-mately 2 hours is permitted (testedaccording to DIN 50016, FW 24).

Current-carrying capacity1) DC component 36 % (higher values on request).

Rated normal current

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Ambienttemperature

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With radial magnetic fieldcontacts, the arc burnsdiffusely while the current is up to approx. 10 kA (instan-taneous value). At highercurrent values the arc iscontracted, so that localoverheating of the contactpieces must be avoided.

Construction and mode of operation

Arc-quenching system

As the contacts open, thecurrent that is to be interruptedinitiates a metal-vapor arcdischarge. Current continuesflowing through the metal-vapor plasma until the nextcurrent zero. The arc extin-guishes at approximatelycurrent zero. The metal vaporloses its conductivity within afew microseconds, which veryquickly re-establishes the di-electric strength of the contactgap.A certain minimum current isneeded in order to maintain themetal-vapor arc discharge. Thearc will be chopped before thenatural current zero if thecurrent falls below this value.In order to prevent imper-missible overvoltages whenperforming switching oper-ations in inductive circuits, thechopping current must belimited to the lowest possiblevalue. Due to the use of aspecial contact material, thechopping current is only 4 to 5 A.Due to the rapid recovery ofthe dielectric strength of thecontact gap, the arc is safelyquenched even in cases wherecontact separation occursimmediately before a currentzero. Consequently, the arcingtime of the last poles to clear isno more than 15 ms.

An additional radial magneticfield produces a force whichcauses the arc to run aroundthe arcing rings of the contactpieces. This allows the contacterosion that occurs at the rootof the arc to be distributed overthe whole circumference of therings.

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Connecting disc

Insulator

Fixed contact piece

Moving contact piece

Arcing chamber

Metal bellows

Guide

Drive and terminal bolt

Description

Vacuuminterrupter(example)

With AC circuit-breakers theactual task of the arc-quench-ing system is to de-ionize thecontact gap immediately aftercurrent zero.In the case of all the con-ventional methods of arc-quenching, this means that thearc is being cooled even beforethe minimum gap and thesubsequent current zero arereached. As a result, the arcpower is unintentionallyincreased to a considerabledegree.With the circuit-breakermodule, on the other hand, thearc is not cooled. The metal-vapor plasma has a high con-ductivity which results in anextremely low arc voltage withvalues from only 20 to 200 V.For this reason, and due to theshort arcing times, the amountof energy conversion in thecontact gap is very low. Thisrelatively low stress levelmeans that the quenchingsystem is maintenance-free.Due to the very low pressuresof less than 10–9 bar in theinterrupter under steady-stateconditions, contact gaps ofonly 6 mm are required in orderto achieve a high dielectricstrength.

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Assemblies

Operating mechanism unitfor accommodating:• Control board with oper-

ating, indication and inter-locking elements

• Operating mechanism forcircuit-breaker, withdrawablepart and earthing switches(optional)

Withdrawable part (pole column)consisting of:• Vacuum interrupters• Isolating contacts• Pole shells

Operating mechanism cross-piece• Carrier element for operating

mechanism unit and with-drawable part

• Guides for moving the polecolumn to the connected/disconnected position

• Accommodates the polelinkage and operatingmechanism shafts.

Description

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Control board

• Operating safety by virtue of– Clear arrangement of

operating and indicatingelements

– Orientation of switch positionindication with reference tomimic diagram

– Optional: Plant-relatedmodifiable mimic diagram

• Mutual mechanical andelectrical interlocks for

– Breaker operatingmechanism

– Operating mechanism ofwithdrawable part

– Operating mechanisms forfeeder and busbar earthingswitches (optional)

• Additional locking of alloperating mechanismfunctions by means ofpadlocks

• Control board can beintegrated in switchgearfront.

Legend

1 Upper connection forisolating contacts

2 Vacuum interrupter

3 Lower connection forisolating contacts

4 Pole shell

5 Guide rods for movingpole column

6 Pole linkage

7 Travel of pole columnfrom disconnected toconnected position

8 Travel of pole columnfrom connected todisconnected position

9 Operating mechanismunit

10 Closing spring

11 Circuit-breaker operatingmechanism linkage

12 Control board

13 Lockable operatingmechanism shaft forwithdrawable part

14 Lockable operatingmechanism shaft forfeeder and busbarearthing switches

Legend

Disconnector function

1 Switch position indication

2 Manual operation withlocking valve

Earthing switch function forfeeder (optional)


4 Manual operationON/OFF

Circuit-breaker

5 Hand crank coupling forenergy storage spring

6 “Closing spring charged”indicator

7 Operating cycle counter

8 Pushbutton CLOSED

9 Pushbutton OPEN


Earthing switch function forbusbar (optional)


12 Manual operationON/OFF

Circuit-breaker module (section), 1250 A

Withdrawable part (pole column)

Operating mechanism cross-piece

Operating mechanism unit

Control board with mimic diagram

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Interlocks

Mechanical interlocks according to VDE 0670 Part 6 and IEC 60 298• Circuit-breaker withdrawable part:– Circuit-breaker can be closed only in

connected and disconnected positions– Circuit-breaker can be closed only in

connected position – if auxiliary voltage is available– Withdrawable part can be moved into

open or closed position only whencircuit-breaker is open

– Withdrawable part can be operated onlywhen circuit-breaker is open

• Withdrawable part earthing switch:– Earthing switch can be closed only with

withdrawable part in disconnectedposition

• Circuit-breaker module:– Circuit-breaker module can be moved out

of panel only with withdrawable part indisconnected position

• Shock-hazard protection:– Shutters for shock-hazard protection are

operated by the withdrawable part of thecircuit-breaker module.

Electrical interlocks• Required with the auxiliary circuit plug

connector withdrawn as a “Plugconnector withdrawn” signal

– With manual operating mechanism andinterlocks acting across several panels(e.g. solenoid interlocking of busbarearthing switches against feederbreakers)

– With motor operating mechanism withinterlocks acting within a panel andacross several panels

• All electrical interlocks betweenassemblies of circuit-breaker module andtheir positions attainable

– Additionally to mechanical interlocksbetween circuit-breaker, withdrawablepart and earthing switch

– Conventionally via contactors andconnections at auxiliary switch contactsof switching devices.

Electromagnetic interlocks• As higher-level interlock• Disconnecting and earthing possible only

when enabled by a higher-level control

Options• Interlocking by means of built-in cylinder

locks for the operating mechanisms ofwithdrawable part and earthing switch

• Interlocking by means of padlocks foroperating mechanisms of circuit-breaker,withdrawable part and earthing switch.

Description


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Operation

Switch position indication

1 Disconnector function,pole column in connectedposition

2 Circuit-breaker “ON”

3 Feeder earthing switch“OFF”

4 Busbar earthing switch“OFF”

Switching



2 Circuit-breaker “OFF”



Disconnecting






Earthing




3 Feeder earthing switch“ON”

4 Busbar earthing switch“ON”

Functions

Connected position

Switch position

Process for disconnected position(in direction of arrow )

Earthing in disconnectedposition

Effective direction of operatingshaft for vacuum interrupter

Effective direction of operatingshaft for vacuum interrupter

Effective direction of operatingshaft for disconnecting

Effective direction of operatingshaft for earthing switches

ON

OFF

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1/8�Siemens HG 11.51 · 1998

The operating mechanism isgenerally of the stored-energytype. The mechanism operatesthe pole assemblies throughrods. The closing spring can becharged either electrically ormanually. It latches in whencharging is complete. Theclosing spring acts as thestored-energy mechanism.For closing, the closing springcan be unlatched eithermechanically by means of thelocal “CLOSE” pushbutton orelectrically by remote control.The closing spring charges thecontact-pressure/openingsprings as the breaker closes.The now discharged closingspring will be charged againautomatically by the mecha-nism motor – if this exists.The breaker is now capable ofperforming the OPEN – CLOSE– OPEN switching sequencethat is required for an unsuc-cessful auto-reclosingoperation.All stored-energy mechanismsperform the switching duties ofsynchronizing and rapid loadtransfer (U) as well as auto-reclosing (K).

Stored-energymechanism

Features• Stored-energy me-

chanism via closingand opening spring

• Charging of springsmanually or electri-cally

• Storage of switchingsequence

In the event of an openingcommand being given after aclosing operation has beeninitiated, the moving contactsreturn to the open position andremain there even if the clos-ing command is sustained. Thismeans that the contacts of thecircuit-breaker module reachthe closed position under thesecircumstances, as is permittedby IEC 60 056 and VDE 0670.

Trip-free mechanism

Features• To VDE 0670• To IEC 60056

The motors operate in short-time duty. Therefore, thevoltage and power consump-tion need not agree with thedata on the rating plate.

Protection of operatingmechanism motors(see adjacent table)The inrush current in theoperating mechanism motorcan be neglected due to itsvery short duration.

Operating mechanismmotors

Features• DC or AC motors• Short-time duty• Varistor circuitry


Description

Operating mechanism unit with stored-energy mechanism and secondaryequipment

1 Operating mechanism fordisconnector function

2 Motor and gearbox

3 Closing spring

4 Closing solenoid

5 Auxiliary switch for disconnectorfunction

6 Operating mechanism for feederearthing switch

7 Low-voltage plug connector

8 Auxiliary switches forswitching function

9 Opening block

10 1st shunt release

Power consumption and rated normal currents for motorshort-circuit protection

Rated voltage Voltage Power Smallest possibleof operating range consumption rated normal currentmechanism of the of the m.c.b. with

motor G-characteristic

max. min.V V V W VA A

DC 24 26 20 350 – 848 53 41 350 – 660 66 51 350 – 4

110 121 93 350 – 2220 242 187 350 – 1.6

AC 100 121 93 – 400 2110 121 93 – 400 2230 244 187 – 400 1.6

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Additional components (in preparation)

Switching device with flatcontacts

Consisting of1 NXACT vacuum circuit-

breaker module with flatcontacts

2 Withdrawable rails for circuit-breaker module

3 Bushings with matingcontacts in partition of panel

4 Mounting angle brackets asmating contacts (copper).

Option:Truck for withdrawing circuit-breaker module from panel(see Fig. above, detail 5)

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The NXACT vacuumcircuit-breaker modulecan be completed withadditional componentsto form a switchingdevice:• Switching device

with tulip-typecontacts

• Switching devicewith flat contacts

Features• Modular integration

in medium-voltageinstallations

• Variable circuit-brea-ker module solutionsfrom economy typeto complete instal-lations

• For switchgear widthof 800 mm:

– Rated normal currentup to 2500 A

– Rated short-circuitbreaking current upto 25 kA.

DesignsOn request.

Switching device with tulip-type contacts

Consisting of1 NXACT vacuum circuit-

breaker module with tulip-type contacts (radially-arranged, spring-loadedcontact pieces)

2 Withdrawable rails for circuit-breaker module

3 Shutters as shock-hazardprotection

4 Bushing-type transformer orpost insulator with matingcontacts as complete unitintegral with shutters andthe withdrawable rails

5 Option: Truck for with-drawing circuit-breakermodule from panel.

Description

Secondary equipment

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Two different types of shuntrelease are available:• The 1st shunt release

3AY15 10 is normally includ-ed in the basic equipment ofthe circuit-breaker module.With this design, the electrictripping pulse is fed to the“OPEN” latching mechanismby means of a direct-actingsolenoid armature in order toopen the circuit-breakermodule.

• The 3AX11 01 release isfitted if more than one shuntrelease is required (2nd shuntrelease possible).With this design, the electri-cal operning command isboosted by means of a sole-noid armature unlatching astored-energy mechanismbefore being fed to the“OPEN” latching mechanismin order to open the circuit-breaker module. Shorteropening times are possiblewith this release than withthe 3AY15 10 type.

For the maximum possiblenumber of releases that maybe fitted, see selection andordering data in Part 2 of thiscatalog.

3AX11 03 undervoltage releaseAn undervoltage releasecomprises a stored-energymechanism, an unlatchingmechanism and an electro-magnetic system which ispermanently energized whilethe circuit-breaker module isclosed. If the voltage fallsbelow a predetermined value,unlatching of the release isenabled and the circuit-breakermodule is opened via thestored-energy mechanism.Manual tripping of theundervoltage release isgenerally performed with anNC contact in the trippingcircuit, but may also beperformed with an NO contactby short-circuiting the solenoidcoil. With this type of release,the short-circuit current islimited by the built-in resistors.

Undervoltage releases can alsobe connected to voltagetransformers. The circuit-breaker module is then trippedautomatically if the operatingvoltage drops to impermissiblylow levels.Unsuccessful attempts atclosing when the solenoid coilof the undervoltage release isnot energized can be pre-vented in the following ways:• By normally fitting electrical

local closing in conjunctionwith the undervoltagerelease

• By connecting the under-voltage release, operatedthrough an NO contact andclosing solenoid, to the sameoperating voltage.

Undervoltage release withdelayFor delayed tripping, the under-voltage release can be com-bined with type AN 1901stored-energy mechanisms (for AC) and type AN 1902 (forDC), both types manufacturedby Bender *. Adjustable delaytimes: 1 s, 1.8 s and 2.5 s.For combination with thestored-energy mechanisms,matched undervoltage releasesmust be fitted. The stored-energy mechanisms are notincluded in the scope of supplybut must be ordered separatelyfrom Bender *.

Current transformer-operatedreleaseConsisting of:• Stored-energy mechanism• Unlatching mechanism• Electromagnetic system.Current transformer-operatedreleases are used where noexternal auxiliary voltage(battery) is available. Tripping iseffected by means of aprotective relay (e.g. over-current-time protection) actingon the current transformer-operated release.

Two different current trans-former-operated releases areused:• 3AX11 02 current trans-

former-operated release with a rated current of 0.5 Awhich requires auxiliarytransformers (e.g. type 4AM5– see catalog sheet LSA2.2.6 “Auxiliary currenttransformers for differentialrelays for overhead lines,cables and transformers”) inaddition to the main currenttransformers.The stored-energy mecha-nism is unlatched when thetripping current is exceeded(90 % of the rated current ofthe current transformer-operated release), thuscausing the circuit-breakermodule to be opened.

• 3AX11 04 current trans-former-operated release, low-energy version for a trippingpulse of min. 0.1 Ws.It is always used in conjunc-tion with the 7SJ41 protec-tive system (independentovercurrent-time protectionwith three-phase currenttransformer) or with similarprotective systems.The protective system takesits supply and release energyfor the circuit-breaker modulefrom its own current trans-former and is thus notdependent on externalauxiliary voltages.The transformer currentensures that the protectiverelay is supplied with energyand fills an energy store, thecharge of which is availableas a tripping pulse at the timeof tripping. This tripping pulsewith ≥0.1 Ws is switched bythe command contact and iscapable of activating thecurrent transformer-operatedrelease.

Anti-pumping(mechanical and electrical)If constant CLOSE and OPENcommands are present at thecircuit-breaker module at thesame time, the circuit-breakermodule will return to the openposition after closing. It re-mains in this position until anew CLOSE command isgiven. In this manner, continualclosing and opening (= “pump-ing”) is prevented.

The extent of the secondaryequipment of the circuit-breaker module depends onthe particular application andoffers a great variety ofpossibilities to satisfy nearlyevery requirement. Allsecondary modules aredescribed below andcombination possibilities arestated in Part 2 of this catalog.

Releases

A release is a device whichtransfers commands from anexternal source, such as acontrol room, to the latchingmechanism of the circuit-breaker module so that it canbe opened or closed. Thevarious types of releasesavailable are described in detailbelow. The VDE designationsfor the devices are also given(in parentheses) when theydiffer from the terms used inthis catalog.

3AY15 10 closing solenoid(shunt-closing release)The closing solenoid unlatchesthe charged closing spring andthus closes the circuit-breakermodule electrically. It is avail-able for either DC or ACoperation.

Shunt release(shunt-opening release)Shunt releases are used forautomatic tripping of thecircuit-breaker module bysuitable protective relays andfor deliberate tripping byelectrical means. They areintended for connection to anexternal power supply (DC orAC) but, in special cases, mayalso be connected to a voltagetransformer for manualoperation.

* Ordering addressDipl.-Ing. W. Bender GmbH & Co. KGP.O. Box 1161D-35301 GrünbergGermany

Description

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Power consumption andoperating ranges of releases

Releases Order No. Power consumption Operating ranges Tripp-of Operation Operation with Release voltage Release voltage ingreleases with DC, AC 50/60 Hz, with DC or current pulse

consumption consumption with AC 50/60 Hzapprox. W approx. VA Ws

Closing solenoid 3AY15 10 140 140 85 to 110 % U 85 to 110 % U –

1st shunt release (without 3AY15 10 140 140 70 to 110 % U 85 to 110 % U –stored-energy mechanism)

2nd shunt release (with 3AX11 01 70 50 70 to 110 % U 85 to 110 % U –stored-energy mechanism)

Undervoltage 3AY11 03 20 20 35 to 0 % U 35 to 0 % U –release

Current transformer- 3AX11 02 – 10 * – 90 to 110 % Ia –operated release (rated current 0.5 A)

Current transformer- 3AX11 04 – – – – ≥ 0.1operated release (low-energy version)

* Consumption with operating current(90 % of the rated current) and open-circuit armature.

Breaker tripping signal

The NO contact S6 makes briefcontact while the circuit-breaker module is opening andthis is often used to operate ahazard-warning system which,however, is only allowed torespond to automatic trippingof the circuit-breaker module.Therefore, the signal from theNO contact must be inter-rupted when the breaker isbeing opened intentionally.This is accomplished underlocal control with the S7 cut-out switch that is connected inseries with the NO contact(see circuit example on page1/12).

Position switch for signalling“closing spring charged”

The charging status of theclosing spring of the circuit-breaker module can be inter-rogated electrically by meansof the position switch.

Varistor module

When inductive loads are beingdisconnected in DC circuits, itis possible for switching over-voltages to be produced whichmay pose a risk to solid-statedevices. This risk can beeliminated by connectingvaristors across the induct-ances of the circuit-breakermodule (motor, closingsolenoid, releases).A suitable varistor module foroperating voltages ≥ 60 V DCto 250 V DC is fitted whenordered. It limits the over-voltage to approx. 500 V.

Electrical local closing

In the standard version, thecircuit-breaker modules can beremote-closed electrically. Inaddition, they can be mechani-cally closed locally by directunlatching of the closingspring. In this version, the closingcircuit of the circuit-breakermodule is triggered electricallyby means of a pushbutton.This arrangement allowsinterlocking conditions arisingfrom the system to beaccepted in the “local” modeso that the circuit-breakercannot close accidentally. Forexample, the circuit-breakermodule can be interlockedthrough the auxiliary contact ofa disconnector (see section oninterlocking and also schematicdiagrams on page 1/12).Circuit-breaker modules fittedwith electrical local closingcannot be closed mechanically.

Interlocking

Mechanical interlockingThe sensing devices on thesystem side check the statusof the circuit-breaker moduleand prevent it from closing ifthe associated disconnector isnot in a position to allow safeoperation. The system alsoprevents the disconnector frombeing operated while thecircuit-breaker module isclosed.Similarly, the mechanicalinterlocking system can also beused for interlocking breakertrucks or withdrawable circuit-breakers.

Electrical interlockingCircuit-breaker modules can beincorporated in electromag-netic interlocking schemes forfeeders and substations. Withelectrical interlocking, a mag-netic lockout is fitted to thedisconnector or its operatingmechanism. The lockout is operated through an auxiliarycontact of the circuit-breakermodule so that the discon-nector can only be operatedwhen the circuit-breakermodule is open.The circuit-breaker module, onthe other hand, is controlled bythe disconnector or its oper-ating mechanism so that it mayonly be closed when the dis-connector is in its end posi-tions. For this purpose, theoperating mechanism must befitted with the electrical localclosing system (see section onelectrical local closing).

Operating cycle counter

An operating cycle counter isintegrated in the control boardto indicate the number ofoperating cycles performed bythe circuit-breaker module. Thenumber of operating cycles canbe used to derive the operatinglife or servicing cycles.

Secondary connections(for control circuit)64-pole plug connector (e.g.type Han 64 D of Hartingmake) with crimping con-nections (a Harting crimpingtool is necessary to connectthe wiring).

Rated insulation 250 V AC/DC voltage

Insulation Class C to VDE 0110

Continuous current 10 A

Making current 50 A

Breaking capacity 2 Aat 220 V DC

For availability of secondaryconnectors see under“Secondary equipment” in Part 2 of this catalog.The upper plug part and sleeveof the connector are suppliedloose. No tools are required forplugging and unplugging theupper and lower plug parts.The schematic diagrams showthe factory assignment of thesecondary connections. Allcircuit-breaker modules havethe same assignment ofterminals if they have the samesecondary connections, withthe result that it is easy toreplace any breaker modules.Other terminal assignments onrequest.

3SV92 auxiliary switches

The following versions areavailable (NO = normally-opencontact, NC = normally-closedcontact):• 6 NO + 6 NC• 12 NO + 12 NCFor availability and possible useby customers see under “Se-condary equipment” in Part 2of this catalog.

Description

Secondary equipment

1


1/12�Siemens HG 11.51 · 1998

Schematic diagrams (not binding – examples only)

Description

–Q0 circuit-breakers

–K1 Contactor (anti-pumping)

–M1 Motor operatingmechanism

–R1 Resistor

–S1 Auxiliary switch–S21,Position switches for –S22 switching off motor

operating mechanismafter charging of closingspring

–S3 Position switch (opens assoon as closing springcharged)

–S41 Position switch (for sig-nalling charged status ofclosing spring)

–S6 Breaker tripping signal–S7 Cut-out switch for

breaker tripping signal–V1, Varistor–V2, modules–V3–X0 Plug connector–Y1 1st shunt release–Y2 2nd shunt release–Y7 Undervoltage release–Y9 Closing solenoid

Secondary equipment for circuit-breaker (standard version)

Motor operatingmechanism

Closing and anti-pumping

Shuntrelease

Closing spring charged

signal

Breakertrippingsignal

Option:

Releases

1 Rectifier (only with AC)

2 Earthing switch ”OFF”

3 Withdrawable part “OFF”

4 Interlocking of withdrawable part end position/circuit-breaker

5 Interlocking of withdrawable part solenoid/circuit-breaker

6 Interlocking shutter for manual operation closed

D334

33A4

-S1

-X0

C3

-V3

12 D2

D1

HG11

-234

8 ep

s

12

-X0

-Y7

-R1

A334

33

D2

-S1

-X0

B3

-V2

34 D2

D1

HG11

-234

9 ep

s-X0

-Y2

Undervoltage release for circuit-breaker

2nd shunt release for circuit-breaker

A522

21D4

C414

13B4

-S41 -S7

-S6

1413

2423

C2

B2A2

-Y1

12

-V2

D1

A2A1

A2A1

-Y9

3231

-K1

2221

1211

-S1

34

12

1413

-K1

2122

-S3

-V1

MDC

ACDC

A1 D2A1-X0

-M1

-X0

2122

-S22

2221

-S21

-Q0

B1

A2A1

-K1

HG11

-234

7a e

ps

1

MANUAL OFF

MANUAL ON

1


Module

Siemens HG 11.51 · 1998�1/13

Description

Schematic diagrams (not binding – examples only)

–Q1 withdrawable unit

–M1 Motor operatingmechanisms forwithdrawable part,feeder and busbarearthing switches

–Q0 Circuit-breaker

–Q8 Feeder earthing switch(manual operatingmechanism)

–Q15 Busbar earthing switch–S1 Auxiliary switch–S11 Position switch for

check-back signal –S15 Position switch for

check-back signal–S8 Position switch for

check-back signal–S81 Position switch for

“Earthing switch OFF”–V1 Varistor module–X0 Plug connector–Y1 Closing solenoid for

withdrawable part–Y8 Closing solenoid for

feeder earthing switch–Y15 Closing solenoid for

busbar earthing switch

Secondary equipment for withdrawable unit (standard version)

Check-back signal *

Option:

Manualactuation

Option:

Motoractuation

* Check-back signal of “Mechanicaloperation and interlocking” forwithdrawable part, feeder earthingswitch and busbar earthing switch

-S81

1413

7271

B11

A11

-Y8

1

D2D1

HG11

-235

2 ep

s

-V1

2

-S1

-X0

-X0

-Q8

3

2

-S15

1413

5251

D11

C11

-Y15

1

D2D1

HG11

-235

3 ep

s

-V1

2

-S1

-X0

-X0

-Q15

B12

A12

-X0

-X0

6

3

-S11

1413

6

B12

-X0

A12

HG11

-236

3 ep

s

-X0

-Q8

6

6

-S8

1413

-Q15

6-S15

1413

-Q1

-S11

1413

D10

B10

D16

52 544442

51 534341

72 74

71 73

D14

B15

B14

A14

32 342422

31 332321C1

314

13

C10

C15

C14

D13

C16

1211

B16

-S1

-X0

-X0

-Q1

HG11

-235

0 ep

s

A15

A10

6261

C164

63

B9 D9D8C8

82 847472

81 837371

92 94

91 93

D7 A8B7D6

62 645452

61 635351B6

4443

A9 C9B8C7A7C6A6

D542

41C5

-S1

6

33

-S11

1413

2

4

For with-drawable part

For feeder earthing switch

For busbar earthing switch

For with-drawable part

12

-V1

MDC

A1D2

A11-X0

-M1

-X0 B11

HG11

-235

5a e

ps

12

-V1

MDC

A1D2

C11-X0

-M1

-X0 D11

HG11

-235

6a e

ps

12

-V1

MDC

A1D2

D15-X0

-M1

-X0 A16

HG11

-235

4a e

ps

A16

9291

-S1

-X0

D15

D2D1

HG11

-235

1a e

ps

-Y1

-X0

1413

-Q0

5

2-S81

Auxiliary switchesAuxiliary switches

For feeder earthing switch

For busbarearthing switch

1


1/14�Siemens HG 11.51 · 1998

Insulating capacityStandards

The NXACT vacuum circuit-breaker modules conform tothe following standards:– IEC 60056– IEC 60694– BS 5311– VDE 0670

with reference to:– IEC 60071– IEC 60721– IEC 60298

The NXACT vacuum circuit-breaker modules are suitablefor site altitudes up to 3000 m.They can be used in buildingswith poor heat insulation or lowheating capacity, heated orcooled, without temperaturemonitoring. The heating orcooling system can fail forseveral days. The specifiedvalues are referred to sea level.When installed at altitudesabove 1000 m, an allowancemust be made for the resultingdecrease in insulating capacity(see correction factor a in thediagram below).

Ambient conditions

The NXACT vacuum circuit-breaker module meets thefollowing ambient conditionsaccording to IEC 60721-3-3,1990:• Climatic:– Class 3K4 (minimum

temperature limit -25 °C)– Class 3K6 (without ice

formation and wind-drivenprecipitation)

– Class 3Z2– Class 3Z5• Biological:– Class 3B1• Chemically active materials:– Class 3C2 (without occur-

rence of saline fog withsimultaneous condensation)

• Mechanically active ma-terials:

– Class 3S2 (restriction accord-ing to operating instructions:clean insulating components)

• Mechanical:– Class SM2.

The following expression thusapplies for the selection of thedevices and equipment:

Rated withstand voltage to be selected 1)

Requiredrated withstand voltage 1)

≥1.1 · a

Description

If, however, the actual insulat-ing capacity must be deter-mined at the installation site –the withstand voltage – thereduction of the insulatingcapacity from that for analtitude of 0 m (sea level) mustbe calculated as follows:

Definitions:Rated …… withstand voltage 1) = target value according toVDE, IEC, etc., referred to sealevel.…… withstand voltage 2) = actual value at the respective height.

Withstand voltage 2) = a · ratedwithstand voltage 1)of the selected switching device.

1000

HG11

-227

1 ep

s1

0.9

0.8

0.7

0.6

0.1

00 2000 3000 4000 5000mC

orre

ctio

n fa

ctor

a

Site altitude above sea level

Tests

For the development and type-testing of high-performanceswitchgear which meets theapplicable standards, Siemenshas its own accredited testingfacilities for:• High-power electrical testing• Test facilities for verifying:– Mechanical operation– Reliability– Insulating capacity– Temperature rise – Climatic withstand capabilityExtensive series of tests arecarried out for the type testsspecified in the relevantstandards and regulations inorder to achieve reliableresults.If a customer wishes tests tobe carried out by anindependent organization, thetest facilities of the followingcompany are also available:PEHLAGesellschaft für elektrischeHochleistungsprüfungenTheodor-Stern-Kai 1D-60596 Frankfurt/MainGermany

The tests encompassswitching capacity, current-carrying capacity and, whereapplicable, insulating capacity.The fees for these tests arecharged by PEHLA accordingto their current price schedule.

1) Rated lightning impulse withstandvoltageRated power-frequency withstandvoltage

2) Lightning impulse withstandvoltagePower-frequency withstand voltage

Standards

Siemens HG 11.51 · 1998�2/1

Siemens 12 kV withdrawable circuit-breaker module switchgear, air-insulated, type NXAIR with NXACT vacuum circuit-breaker modules

Features

• Rated voltage 12 kV• Maintenance-free up to

10,000 operating cycles• Mechanical service life

10,000 operating cycles• Rated short-circuit

breaking currents up to25 kA (rms value), up to50 operating cycles

• User configurablesecondary equipment

• Suitable for switch-ing, for example:

– Overhead lines,cables

– Transformers– Capacitors– Filter circuits – Motors• Optimum replace-

ment for breakers ofconventional design –e.g. minimum-oilcircuit-breakers anddead-tank circuit-breakers

Contents Page

– Rated data– Selection and ordering data– Dimensions– Secondary

equipment 2/2 – 2/3

– Enquiry form 2/4R-

HG11

-120

eps

Vacuum circuit-breakermodule NXACT, 12 kV,1250 A

12 kV, Type 3AJ

R-HG

11-1

17ep

s

2


2/2�Siemens HG 11.51 · 1998

Vacuum Circuit-Breaker Module,12 kV, Type 3AJ

Selection and ordering data

Circuit-breaker module12 kV, 1250 A

Circuit-breaker module12 kV, 2500 A

Rated data

– Rated voltage Ur 12 kV– Rated lightning

impulse volt-age Up 75 kV

– Rated short-timepower-frequency voltage Ud 28 kV

– Rated short-timeduration tk 3 s

– Rated short-circuitbreaking current Iscwith number ofswitching opera-tions (see table)

– Rated short-circuitmaking current Ima(see table)

– Operating mechanismfunctions withappropriate releases for withdrawable part,feeder and busbarearthing(see table)

12 20 25 210 50 1250 3AJ45 140

50 210 50 1250 3AJ47 140

25 25 210 63 1250 3AJ46 140

50 210 63 1250 3AJ48 140

50 210 63 2500 3AJ49 145

Rated Rated Switching Pole- Rated Rated Order Weightvoltage short-circuit operations centre short-circuit normal No.Ur breaking with Isc distance making current Ir

current Isc current Ima

kV kA Number mm kA A approx.kg

Operating mechanism functions for

Withdrawable part Feeder earthing Busbar earthing

Manual operating mechanism – –Manual operating mechanism Manual operating mechanism –

Manual operating mechanism – Manual operating mechanismManual operating mechanism Manual operating mechanism Manual operating mechanism

Motor 24 V DCoperating 48 V DC mechanism 60 V DC

110 V DC220 V DC

100 V AC110 V AC230 V AC

Motor 24 V DCoperating 48 V DCmechanism 60 V DC

110 V DC220 V DC

100 V AC110 V AC230 V AC


110 V DC220 V DC

100 V AC110 V AC230 V AC

–––––

–––


110 V DC220 V DC

100 V AC110 V AC230 V AC

–––––

–––


110 V DC220 V DC

100 V AC110 V AC230 V AC


110 V DC220 V DC

100 V AC110 V AC230 V AC


110 V DC220 V DC

100 V AC110 V AC230 V AC


110 V DC220 V DC

100 V AC110 V AC230 V AC

–––––

–––

–––––

–––

2122232425

262728

2030

4050

3132333435

363738

4142434445

464748

5152535455

565758

R-HG

11-1

18ep

sR-

HG11

-119

eps

210210

210210

2


Module

Siemens HG 11.51 · 1998�2/3


Dimensions, secondary equipment

HG11

-236

4 ep

s

517

730

586646

375

275

200 188

767140*

100

584156

NXACT vacuum circuit-breaker module

Operating mechanism forearthing switch

* Travel

Pole-centredistance210 mm

Basic equipment Additional equipment Remarks

• Electrical operating mechanism Can also be operated manually

• 3AY15 10 closing solenoid –

• 1st shunt release • 2nd shunt releases Max. 2 opening• Current transformer- releases possible.• operated release, 0.5 A For possible combinations• Low-energy current transform- and Order Nos.• er-operated release, 0.1 Ws see table below • Undervoltage release

• Auxiliary switches 6 NO + • Auxiliary switches,12 NO + For freely available contacts• 6 NC and 64-pole plug • 12 NC (more than 12 NO + see table below• connector • 12 NC on request)

• Mechanical and electrical anti-pumping –• Breaker tripping signal• Operating cycle counter• 2 position switches for “closing spring charged” signal– • Electrical local closing Instead of mechanical local closing– • Mechanical interlocking –– • Varistor circuitry (≥ 60 V DC) In secondary circuit– • Halogen-free and flame- –

• retardant wiring cables– • Condensation protection

• (230 V AC) –– • Silver-plated primary External connections + internal

• conducting path connections on both sides– • Hand crank or standard key For manual charging of the

• closing spring

Possible release combinations

Basic equipment Additional releases (extra price)Closing 1st shunt 2nd shunt Current transformer- Undervoltagesolenoid release release operated release release3AY15 10 3AY15 10 3AX11 01 3AX11 02 / 3AX11 04 3AX11 031 1 1 1 –1 1 1 – 11 1 – 1 1

Auxiliary switch contacts available to customers

Auxiliary Contacts freely available to customers on lower plug partcontacts Basic equipment Basic equipmentper function for circuit-breaker function for disconnector function 6 NO + 6 NC 2 NO + 2 NC 1 NO + 1 NC

12 NO + 12 NC 8 NO + 8 NC 7 NO + 7 NC

Abbreviations: NO = Normally open, NC = Normally closed

Secondary equipment (for description refer to pages 1/10 and 1/11)

� Without operating � Manual operating � Motor operating mechanism mechanism mechanism

Operating voltage � __ V DC � __ V AC, __ HzInterlocking � Padlock � Key switch

� Electromagnetic � __ V DC � __ V AC, __ Hz


2/4�Siemens HG 11.51 · 1998

2

Technical data

For possiblecombinations seepages 2/2 and 2/3

Rated voltage � 12 kV � Other voltage __ kV Other

Rated lightning impulse voltage � 75 kV

Rated short-time power-frequency voltage � 28 kV

Rated short-circuit breaking current � 20 kA � 25 kA

Switching operations with rated short-circuit breaking current � 25 x � 50 x

Rated short-circuit making current � 50 kA � 63 kA

Rated normal current � 1250 A � 2500 A

Pole-centre distance � 210 mm

With request for � Quotation � Telephone call � Visit � Order/Supply

Secondaryequipment

For possiblecombinations seepages 2/2 and 2/3

Motor operating mechanism � _______V DC � _______V AC

Closing solenoid � _______V DC � _______V AC, _____ Hz

1st shunt release � _______V DC � _______V AC, _____ Hz

� 2nd shunt release � _______V DC � _______V AC, _____ Hz

� Current transformer-operated release � 0.5 A � Tripping pulse 0.1 Ws min.

� Undervoltage release � _______V DC � _______V AC, _____ Hz

� Auxiliary switches � 6 NO + 6 NC � 12 NO + 12 NC

� Low-voltage connection � 64-pole plug connector

� Electrical local closing � Mechanical interlocking

� Varistor circuitry at ≥ 60 V DC

Operating instructions � German � English � French � Spanish

Field of applicationand otherrequirements

Name and address of your Siemens contact

Company Siemens AGDepartmentNameStreetZIP code/TownFAX

Your name and address

CompanyDepartmentNameStreetZIP code/TownTel.

Please:– Copy this sheet

– Fill it in according to your

requirements

– Send it to your Siemens contact

Enquiry Form

FAX

With-drawablepart


Operating voltage � __ V DC � __ V AC, __ Hz Interlocking � Padlock � Key switch



Operating voltage � __ V DC � __ V AC, __ Hz Interlocking � Padlock � Key switch


Feederearthingswitch

Busbarearthingswitch

� Overhead transmission lines

� Cables

� Transformers

� Capacitors

� Filter circuits

� Motors

� Reactor coils

Order No. Quantity_________3 A J – –


1


Module

Siemens HG 11.51 · 1998�A/1

Appendix

Contents Page

Catalog Index A/2

Conditions of Sale and Delivery, Export Regulations, Trademarks, Dimensions A/4

A


A/2�Siemens HG 11.51 · 1998

Catalog Index of the Power Transmission and Distribution Group (Medium-Voltage Division)

Catalog Index

Title Designation Order No.

High-Voltage Equipment (Above 52 kV)

Surge Counting Devices for Surge Arresters HG 21.4 E50001-K1521-A401-A1-7600

Medium-Voltage Equipment (High-Voltage Equipment up to 52 kV)

3AH Vacuum Circuit-Breakers HG 11.11 E50001-K1511-A111-A3-76003TL Vacuum Contactors HG 11.21 E50001-K1511-A211-A1-7600Disconnectors and Earthing Switches HG 11.31 E50001-K1511-A311-A1-7600NXACT Vacuum Circuit-Breaker Module HG 11.51 E50001-K1511-A511-A1-7600Vacuum Switches, Switch-Disconnectors, HV HRC Fuse HG 12 E50001-K1512-A101-A4-7600Switchgear Interlock Units, Control Valves,Compressed Air Systems HG 13 E86010-K1513-A101-A1-7600Overvoltage Protection HG 21 E50001-K1521-A101-A1-7600Insulators of Cast Resin (Excerpt) HG 22 E50001-K1522-A111-A1-7600Current and Voltage Transformers HG 24 E50001-K1524-A101-A2-7600Air-Cored Reactors, High-Voltage Capacitors HG 25 E86010-K1525-A101-A4-7600

Medium-Voltage Switchgear (High-Voltage Indoor Distribution Switchgear)

Metal-Enclosed Truck-Type Switchboardsfor Indoor Installation 8BC1, 8BD1 HA 21 E86010-K1421-A101-A3-7600Type 8BK20 Switchgear up to 24 kVwith Withdrawable Circuit-Breakers (Metal-Clad) HA 25.21 E50001-K1425-A311-A5-7600Type 8BK40 Switchgear up to 17.5 kV/63 kA with Withdrawable Circuit-Breakers HA 25.31 E50001-K1425-A411-A2-7600Generator Circuit-Breaker Units up to 17.5 kV/80 kA, Type 8BK41 HA 25.41 E50001-K1425-A511-A1-7600Type 8BJ50 Switchgear up to 24 kV with Withdrawable Circuit-Breakers* HA 25.61 E50001-K1425-A711-A2-7600 NXAIR Withdrawable Circuit-Breaker Module Switchgear up to 12 kV, Air-Insulated HA 25.71 E50001-K1425-A811-A1-760036/38 kV Switchgearwith Withdrawable Vacuum Circuit-Breakers, HA 26.1 Siemens Den Haag, Type 8BK20 Dept.CMS DMSType 8BK30 Switchgear up to 12 kVwith Draw-Out Vacuum Contactors HA 27.11 E50001-K1427-A111-A2-7600Panels up to 36 kV with Fixed-Mounted Circuit-Breakers,SF6 -Insulated, Types 8DA10 and 8DB10Single-Pole, Metal-Enclosed, Metal-CladSingle-Busbar SwitchgearDuplicate-Busbar Switchgear HA 35.11 E50001-K1535-A101-A6-7600Type 8DC11 Panels up to 24 kV, Fixed-Mounted Vacuum Circuit-Breaker Switchgear, SF6-Insulated HA 35.41 E50001-K1435-A401-A3-7600NXPLUS Fixed-Mounted Circuit-Breaker Switchgear up to 36 kV, SF6-Insulated HA 35.51 E50001-K1435-A511-A1-7600Spline-Shaft Drive 8UG for Torque Transmission up to 200 Nm HA 39.1 E86010-K1439-A111-A2-7600Motor Drive 8UH for Torque Requirements up to 250 Nm HA 39.3 E86010-K1439-A131-A1-7600Fixed-Mounted Ring-Main Units up to 24 kV, SF6-Insulated,Type 8DH10 HA 41.11 E50001-K1441-A101-A2-7600 Fixed-Mounted Ring-Main Units up to 24 kV, SF6-Insulated,Type 8DJ10 HA 45.11 E50001-K1445-A111-A6-7600Type 8FB1 Compact Transformer Substations up to 24 kV HA 51.1 E50001-K1451-A111-A2-7600Factory-Built Container Stations, Type 8FF1 HA 52.1 E50001-K1452-A111-A1-7600

Please contact your Siemens Representative

High-Voltage and Medium-Voltage Equipment

Medium-Voltage Switchgear

A


Module

Siemens HG 11.51 · 1998�A/3

Notes

A


A/4�Siemens HG 11.51 · 1998

Responsible for:

Technical contents:Hermann Bierfelder,Siemens AG, Dept. EV MNK V,Erlangen

General editing:Gabriele Pollok,Siemens AG, Dept. EV BK T,Erlangen

Printed in GermanyKGK 0898 5.0 24 En 100531 6101/U753

Conditions of Sale and Delivery

Conditions of Sale and Delivery

Subject to theGeneral Conditions of Supplyand Deliveryfor Products and Services of the Electrical and ElectronicIndustry and to any otherconditions agreed upon withthe recipients of catalogs.

�The technical data, dimensionsand weights are subject tochange unless otherwisestated on the individual pagesof this catalog.

The illustrations are forreference only.

We reserve the right to adjustthe prices and shall charge theprices applying on the date ofdelivery.

A En 1.91a

Export Regulations Trademarks

In accordance with presentprovisions of the GermanExport List and the USCommerce Control List, export licences are notrequired for the products listed in this catalog.

An export licence mayhowever be required due tocountry-specific application andfinal destination of theproducts.

Relevant are the export criteriastated in the delivery note andthe invoice regarding a possibleexport and reexport licence.

Subject to change withoutnotice.

All product designations usedare trademarks or productnames of Siemens AG or ofother suppliers.

Dimensions

All dimensions in this catalogare given in mm.

Bereich Energieübertragung und -verteilungGeschäftsgebiet MittelspannungPostfach 32 20D-91050 Erlangen

http://www.ev.siemens.de

Siemens Aktiengesellschaft Order No.: E50001-K1511-A511-A1-7600

siemens catalog for the cb

Documents

rapid load

transient

nxact vacuum

breaker module

operating

capacitive

vacuum circuit

breaker module