7SA6 Distance Protection Relay for All Voltage Levels

7/29/2019 7SA6 Distance Protection Relay for All Voltage Levels

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Protection SystemsCatalogSIP 4.3 2001

SIPROTEC4- 7SA6DistanceProtectionRelayforallVoltageLevels


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DistanceProtectionRelayPages

Description 2 to 5

DIGSI4/SIGRA4operatingprogram 6 and 7

Communication 8 and 9

Functions 10 to 15

Typicalapplications 16 to 18

Technicaldata 19 to 29

Selectionandorderingdata 30 to 34

Connectiondiagrams 36 to 42

Siemens SIP 4.3 2001 1

Siemens AG 2001


Catalog SIP 4.3 2001

Accessories 35

~ Advantagestoyoun

Cost-effectiveness

n

Highdegreeofautomation

n User-friendlyoperation

n

Lowplanningandengineeringeffort

n Fast,flexiblemounting,reducedwiring

n

Simple,shortcommissioning

n Simplesparepartstocking,highflexibility

n

Highreliabilityandavailability

n State-of-the-arttechnology

n

Compliancewithinternationalstandards

n

IntegrationintheoverallsystemSIPROTEC4-SICAM-SIMATIC

}

Dimensionsdrawings44 to 47

SiemensRepresentatives 48

Conditionsofsaleanddelivery


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The distance protection relay7SA 6 is non-switched incorpo-rating all the additional func-

tions for protection of over-head lines and cables at all volt-age levelsfrom 5 to 400 kV .

A ll methods of neutralpointconnection (resonant earthing,isolated, solid or low-resistanceearthing) are reliablydealt with.The unit can issue single orthree-pole TR IP commands aswell asC LO SE commands.Consequentlyboth single-pole,three-pole and multiple auto-reclosure is possible.

Tele-protection functionsaswell as earth-fault protectionand sensitive earth-fault detec-

tion are included. Pow erswingsare detected reliablyand non-selective tripping isprevented. The unit operatesreliably and selectivelyevenunder the most difficult net-work conditions.

Maximumlifetimeandreliabilty

The hardware of theSIPR O TEC 4 units isbased on20 years of experience bySiemens with numericalprotection. The number of

componentsemployed is re-duced through use of a 32-bitmicroprocessor in conjunctionwith highly integrated compo-nents, thus enhancing the reli-ability. The experience gainedbySiemens in production ofover140 000 numerical protec-tion units has been incorpo-rated in the software design.The most modern manufactur-ing methods in conjunctionwith effective quality controlensure high reliability and along service life.

Cost-effectivepowersystemmanagement

The SIPR O TEC 4 unitsare nu-merical relays which also pro-vide control and monitoringfunctionsand therefore sup-port the user in view of acost-effective power systemmanagement. The securityandreliabilityof powersupply is in-creased asa result of minimiz-ing the use of hardware.

Local operation has been de-signed according to ergonomiccriteria. Large, easy-to-read

backlit displays are provided.

The SIPR O TEC 4 unitshave auniform design and a degree offunctionality which represents

a whole new level of perfor-mance in protection andcon-trol. I f the requirementsforprotection, control or interlock-ing change, it is in the majorityof cases possible to implementsuchchangesby meansofparameterization using DIG SI 4without having to change thehardware.The use of powerfulmicro-controllersand the applicationof digital measured value con-ditioning andprocessinglargelysuppressesthe influ-ence of higher-frequency tran-sients, harmonics and DC com-ponents.

Back-upprotection

The unit can also be used asback-up protection for all typesof differential protection equip-ment.

Add-onprotectivefunctions

The 7SA6 incorporates severalprotective functions usuallyre-quired for distance protection.These are:

Earth-fault direction detec-tion in isolated and reso-nant-earthed networks

Sensitive earth-fault detec-tion with high-resistancefaultsin an earthed network

Phase-selective overcurrent-time protection

O vervoltage/undervoltageprotection

Auto-reclosure Tele-protection (pilot protec-

tion)

Synchro-check Breaker failure protection O verload protection.

Programmablelogic

The integrated programm ablelogic functionsallow the userto implement his own func-tions for the automation ofswitchgear (interlocking) or asubstation via a graphic user in-terface. The user canalso gen-erate user-defined messagesand logical combinationsof in-ternal or externalsignals.

Localandremotecommuni-cation

The SIPRO TEC 4 unitsprovide

several serialcommunicationinterfaces for various tasks:

Front interface for connect-ing a PC

System interface for con-necting to a controlsystemvia various protocolls.

Rear-side service interface(always provided) for con-nection to a PC , either di-rectly or via a modem

Prepared for Ethernet (U CA ) Time synchronization via

lRlG-B/DC F/system interface

The 7SA6 relay is designed fortwo additionalcomm unicationfunctions:

Interface for communicationwith the remote relay

Process bus interface.It is therefore well prepared forfuture comm unication stan-dards.

Operational indicationsandtime-stampedfault indica-tions

The SIPRO TEC 4 units provideextensive time-stamped datafor fault analysis. A ll indicationslisted below are memorized toavoid lossduring power supplyfailure.

Fault event recordThe last eight fault cases arealways stored in the unit.The entryof individualevents is carried out withmillisecond time resolution.

Event signalsA ll eventsnot directlyrelatedto a network fault (e.g. m oni-toring signals, switching ac-tions) are stored in the eventbuffer. The time resolution isone ms and the last 200 en-tries are available.


Description

2 Siemens SIP 4.3 2001

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15srecordingoffaultdata

All the digitized input signals(currents, voltages) are stored

in a fault data memory. Storagein memory can be triggered al-ternativelybyfault detection, aTR IP command or a binary in-put. Up to 8 faultscanbe re-corded. A fault record can begenerated for test purposes ei-ther from DIG SI 4 or from thesubstation control system.

Operationalmeasuredvalues

The large scope of available op-erational measured valuesgives, on the one hand, an ex-

tensive overview of current op-erational conditions and, on theother hand, affords valuablesupport during commissioning.

ControI

The integrated control func-tions permi t control of cir-cuit-breakers and electricallyoperated/motorized dis-connectorslocally, via the inte-grated operatorpanel, binaryinputs, D IG SI 4 or the substa-tion control system(e.g. SICAM ).

Timesynchronization

The battery-backed clock canbe synchronized via:

DCF 77 signal (serial) G PS satellite signal (serial) M inute-pulse via binary input System interface bythe sub-

station control e.g. SIC AM

A date and time with millisec-ondsresolution is assigned toeveryindication.

Assignablebinaryinputsandoutputs

Binary inputs, outputs andLED s can be assigned to per-form specific functionsas de-

fined bythe user.

Freelyassignablefunctionkeys

Four freelyassignable functionkeys assist the user in the exe-cution of frequentlyemployedoperationalsteps. The follow-ing are typical examples:

Auto-reclosure O N and O FF Callup of the measured val-

ues

Busbar changeover in thecase of double busbars

Switching off and earthing afeeder.

Continuousself-monitoring

The hardware and softwarecomponents are continuously

monitored. If abnormal condi-tions are detected, the unit sig-nalsthem imm ediately. In thisway, ahigh levelof safety, reli-ability and availabilityof theprotection system is achieved.

Batterymonitoring

The internal batteryis used toback-up the clock and mem oryfor storage of switching statis-tics, status and fault indicationsand fault recording in the eventof a power supply failure. I tscapacity is checked bythe pro-

cessor at regular intervals. Ifthe capacity of the batteryisfound to be declining, an alarmis generated. Routine replace-ment is therefore not neces-sary. A ll setting parametersarestored in the Flash-EPRO M ,and therefore not lost if thepower supply or batteryfails.

User-friendlylocaloperation

The front panel of the unit hasa clearand user-friendlyde-

sign. Positioning and groupingof the k eyssupport the naturaloperating process. A largenon-reflective backlit displayprovides clearvisualization ofinformation display.

Im portant indicationscan beassigned to the LEDs. Naviga-tion within the operation tree issimplified bymeansof the cur-sor keys. Parameterization canbe carried out either bymeansof the keyboard or more simplybymeansof the DIG SI 4 oper-ating program.


Fig.1Function diagram

Local/Remotecontrol

M easured/meteredvalues

Supervision

CFC Logic

SerialCommunication

1) D istance protection

2) Fault locator

3) D irectional earth-faultprotection

4) Back-up overcurrent-timeprotection

5) Switch-onto-fault

protection6) T hermal overload

protection

7) Power swing detection

8) Teleprotection fordistance protection

9) W eak-infeed protection

10) Teleprotection forearth-fault protection

11) Breaker-failure protection

12) Voltage protection V< , V>

13) Synchro-check

14) A uto-reclosure

15) Trip circuit supervision

16) Lockout (CLO SE command

interlocking)17) Sensitive earth-fault

detection


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Description

Localoperation

A ll operator actions can be ex-ecuted and information dis-

played via an integrated userinterface.

Freely assignable LEDs areused to display processor de-vice information. The LEDs canbe labelled according to userrequirements. An LED resetkey resetsthe LED s.

J

O n the backlit LC D display,processand device informationcan be displayed astext in vari-ouslists.

I

4 configurable function keyspermit the user to execute fre-quentlyused actionssimply

and fast.

I

Numerical keys

Fig.2

RS232 operator interface


Fig.3

Keys for navigation

Process and relayinformationcan be displayed on the largeilluminated LC displayeithergraphically in the form of amim ic diagram or astext in var-ious lists.

The prominent keys for controlof the switchgear are locatedon the control axis directlybelow the display.

Two key-operated switchesensure rapid and securechangeover between Localand Remote control and be-tween interlocked and non-interlocked operation.

J

J

I

J

J

J

LSP2242f.eps

LSP2243f.eps


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Connectiontechniquesandhousingwithmanyadvan-tages

1/3, 1/2 and 1/1-rack sizes:These are the available hous-ing widths of the 7SA 6 relays,referred to a 19" module framesystem. This means that previ-ousm odelscan always be re-placed. The height isa uniform255 mm for flush-mountinghousingsand 266 mm for sur-face-mounting housing for allhousing widths. A ll cables canbe connected with or withoutring lugs. P lug-in terminalsareavailable as an option.It is thuspossible to employprefabricated cable harnesses.In the case of surface mount-ing on a panel, the connectionterminals are located aboveand below in the form ofscrew-type terminals. Thecommunication interfacesarelocated in a sloped case at thetop and button of the housing.The housing can also be sup-plied optionallywith a de-tached operator panel (refer toFig. 6), in order to allow opti-mum operation for all typesofapplications.

Fig.7Surface-mounting housingwith screw-type term inals

Fig.4Flush-mounting housingwith screw-type term inals

Fig.6Flush-mounting housing with plug-interminals and detached operatorpanel

Fig.5Rear view of f lush-mounting housingwith covered connection terminalsand wirings

LSP2174f.eps

LSP2244f.eps

LSP2166f.eps

LSP2219f.eps

LSP2237f.

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Fig.8Com munication interfaces in asloped case in a surface-mounting

housing


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DIGSI4,theoperatingpro-gramforSIPROTEC4units

The PC operating program

D IG Sl 4 is the interface be-tween the user and theSIP RO TEC 4 units. Settingscan be entered and resultscanbe read out via the modern andintuitive W indows graphicaluser interface. DIG SI 4 is aprogram tailored for substationcontrol and protection.

Simplesettingoftheprotec-tion

Those protection functions,which the user actuallyre-quires, can be selected from

the extensive range of protec-tion functions provided(Fig. 10). A s a result the func-tionalclarity in the furthermenus is enhanced.

Convenientsettingofrelayfunctionssettingwithpri-maryandsecondaryvalues

The settingscan be enteredand displayed asprimaryorsecondary values. Switchingbetween primaryor secondaryis done byclicking on the cor-responding symbol in the toolbar (Fig. 9).

DIGSI4matrix

The DI G SI 4 matrix providesthe user with an overall view ofthe unit configuration at aglance (Fig. 11) For example,the allocation of the LED s, thebinary inputs andoutput relaysare displayed in a single chart.And with one click of themouse, the allocation may bechanged.



DIGSI4/ SIGRA4Operatingprogram

Fig.9DI GSI 4, main menue

Fig.11DI GSI 4, allocationmatrix

Fig.10DI GSI 4, range of protection functions

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CFC:Programminglogic

With the help of the CFC gra-phic tool (Continuous Function

Chart) interlocks andswitchingsequencescan be configuredsimply via drag and drop oflogic symbols; no specialknowledge of software is re-quired.Logical elements,such asAN D, O R, timerelementsaswell aslimit value inquiries ofmeasured values(Fig. 12) areavailable.

Displayeditor

The single-line diagram for theunits with a graphicdisplayis

generated with the display edi-tor. The predefined symbolsets can be expanded to suitthe user. The drawing of asingle-line diagram is ex-tremelysimple. O perationalmeasured values(analog val-ues) in the unit can be placedwhere required (Fig. 13).

Commissioning

Specialattention has been paidto comm issioning. All binary in-puts and outputs can be dis-played andactivated directly.This can simplifythe wiringcheck significantlyfor the user.Selected indicationscan beoutput via the serial interfacefor test purposes.

SIGRA4:Universalpro-gramforevaluationoffaultrecords

Fault records stored in the pro-tection unit can be visualized ina straighforward manner andevaluated. Harmonic and indi-vidualmeasuring pointscanbeeasilycalculated; phasorandcircle diagrams can be dis-

played, in addition to numer-ousother functions. A nytypeof fault records in the Comtradeformat canbe analysed(Fig. 14).


Fig.12CFC plan forflexible logicsupplement

Fig.13D isplay editorfor single-linediagram

LSP2250f.

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LSP2251f.

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Fig.14SIGRA 4 forfault eva-luationLS

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Serialcommunication

With respect to communica-tion, particular emphasis is

placed on the customer re-quirements in energy automa-tion:

Every data item is time-stamped at the source, i.e.where it originates.

Alreadyduring the processof communication, informa-tion is assigned to the causethereof (e.g. assignment ofthe indication circuit-breaker TR IP to the corre-sponding command).

The communication systemautomatically handles the

transferof large data blocks(e.g. fault recordings or pa-rameter data files). T he userhas accessto these featureswithout anyadditional pro-gramming effort.

For the safe execution of acontrol command the corre-sponding data telegram isinitiallyacknowledged bythedevice w hich will executethe command. A fter the re-lease and execution of thecommand a feedback signalis generated. At everystageof the control command exe-

cution particular conditionsare checked. If these are notsatisfied, command execu-tion may be terminated in acontrolled m anner.

LocalPCinterface

The PC interface accessiblefrom the front of the unit per-mits quick accessto all param-etersand fault event data. T heuse of the DIG SI 4 operatingprogram is particularlyadvan-tageousduring commissioning.

Serviceinterface7SA6 units are always fittedwith a rear-side hardwired ser-vice interface, optionallyasRS232 or RS485. In addition tothe front-side operator interface,a PC can beconnectedhere ei-therdirectlyor viaa modem.

Reliablebusarchitecture

RS485 busWith thisdata transmissionvia copper conductors, elec-tromagnetic fault influencesare largelyeliminated bytheuse of tw isted-pair conduc-tors. U pon failure of a unit,the remaining system con-tinuesto operate withoutanyproblem.

Fiber-optic double ring circuitThe fiber-optic double ringcircuit is immune to electro-

magnetic interference. Uponfailure of a section betweentwo units, the communica-tion system continues to op-erate without disturbance. Itis usually impossible to com-municate with a unit that hasfailed. I f a unit were to fail,there is no effect on thecomm unication with the restof the system.

Retrofitting:Modulesforeverytypeofcommunica-tion

Communication modules forretrofitting are available for theentire SIP RO TEC 4 unit range.These ensure that, where dif-ferent comm unication proto-cols (IEC 60870-5-103,PR O FIBU S, DIG SI, etc.) are re-quired, such demandscan bemet. For fiber-optic comm uni-cation, no externalconverter isrequired for SIPR O TEC 4.

IEC 60870-5-103

IEC 60870-5-103 is an interna-tionallystandardized protocolfor efficient communication

with protection relays.IEC 60870-5-103 is supportedbya number of protection de-vice manufacturers and is usedworld-wide. Supplements forthe control function are definedin the m anufacturer-specificpart of this standard.

PROFlBUS-FMS

PR O FIBU S-FM S isan interna-tionallystandardized comm uni-cation system (EN 50170) forsolving comm unication prob-lems. PR O FIBUS issupported

internationally byseveral hun-dred manufacturers and has todate been used in more than1,000 000 applicationsall overthe world. C onnection to aSlM A TlC S5/S7 programmablecontroller is made on the basisof the data obtained (e.g. faultrecording, fault data, measuredvalues and control functional-ity) via the SIC AM energy auto-mation system.


Fig.17Bus structure: RS485 copperconductor connection

O LM1)

Fig.16Bus structure: O pticaldouble ring circuit


Communication

Fig.15IEC 60870-5-103startype RS232 copper conductor connection or fiberoptic connection

1) Optical Link Module


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PROFIBUSDP1)

PR O FIBUS DP is an industrialcommunications standard and

is supported bya numberofPL C and protection devicemanufacturers.

DNP3.01)

DNP 3.0 (D istributed NetworkProtocol, Version 3) is an inter-nationally recognized protec-tion and bay unit communica-tion protocol. SIP RO TEC 4unitsare Level 1 and Level 2compatible.

Ethernet 2)

An Ethernet application-spe-cific profile for energyautoma-tion applicationsis currentlyunder preparation.

As soon as standardizationwork has beencompleted,SIPR O TEC 4 units will be up-graded to meet the require-ments of the new standard.Retrofitting can be carried outsimply byinsertion of an Ether-net comm unication module.

Analogoutputs0to20mA

2 or 4 analog output interfaces

for transmission of measuredor fault location valuesareavailable for the 7SA 6. Tw o an-alog output interfacesare pro-vided in an analog output mod-ule (Fig. 21). U p to two analogoutput modules can be in-serted perunit.


Fig.18Fiber-optic communication module

Fig.20Electricalcommunicationmodule

Fig.19Fiber-optic double ring comm unication module

LSP2162f.eps

Fig.22Communication

LSP2163f.eps

LSP2164f.eps

LSP2207f.eps

Fig.21O utput module 0 to 20 mA , 2 channels

O perating andmonitoring

Telecontrol interface tosystem control centers(e.g. IEC 60870-5-101)

Automationsystems(e.g. SIM ATIC)

TimesynchronizationDCF77, GPS

SICAM SCStation bus

RS485

RS485/opticalconverter

optical/RS232converter

M odem

System

M odem DIGSI 4Tele-controlviamodem

7SA6107SA6117SA6317SA612

DIGSI 4(Local for comm issioning)

1) Available from the forthcomingfirmware version

2) U nder development.


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Distanceprotection(ANSI21,21N)

The main function of the 7SA 6

is a non-switched distance pro-tection. By parallel calculationand monitoring of all six imped-ance loopsa high degree ofsensitivity andselectivity isachieved for all typesof fault.The shortest tripping time isless than one cycle. All meth-ods of neutral-point connection(resonant earthing, isolated,solid or low-resistanceearthing) are reliablydealt with.Single-pole and three-pole trip-ping is possible.

Four pickup methods

The following pickup methodscanbe employed alternatively:

O vercurrent pickup I> > Voltage-dependent

overcurrent pickup V/I

Voltage-dependent andphase angle-dependentovercurrent pickup V/I/

Im pedance pickup Z I> > Iph

V(I> > )

V(I> )

V

V(I> )

Forward Line

Reverse

Load Load

Forward

Reverse


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Faultlocator

The integrated fault locatorcal-culates the fault impedance

and the distance-to-fault. Theresults are displayed in ohms,kilometers, (miles) and in per-cent of the line length. P arallelline compensation and loadcurrent compensation forhigh-resistance faults is alsoavailable.

Powerswingdetection(ANSI68,68T)

Dynamic transient reactions,for instance short-circuits, loadfluctuations, auto-reclosures orswitching operations can

cause power swings in thetransmission network. D uringpower swings, large currentsalongwith small voltages cancause unwanted tripping ofdistance protection relays. Toavoid uncontrolled tripping ofthe distance protection and toachieve controlled tripping inthe event of loss of synchro-nism, the 7SA6 relay isequipped with an efficientpowerswing detection func-tion. Power swingscan be de-tected under symm etrical loadconditions asw ell asduring

single-pole auto-reclosures.

Tele-(pilot)protectionfordistanceprotection(ANSI85-21)

A tele-protection function isavailable for fast clearance offaultsup to 100% of the linelength. T he following operatingmodesm aybe selected:

P OTT D irectionalcomparison

pickup

U nblocking PU TT acceleration with

pickup PUTT Z1B acceleration Blocking Pilot wire comparison Reverse interlockingThe carriersend and receivesignals are available as binaryinputsand outputs and can befreely assigned to each physi-cal relayinput or output. Atleast one channel is requiredfor each direction.

7SA6 also permits the transferof phase-selective signals. Thisfunction requiresthree chan-nels for each direction.

This feature is particularlyad-vantageous as it ensures reli-able single-pole tripping, if sin-gle-pole faultsoccur on differ-ent lines.

During disturbances in the sig-nalling channel receiver or onthe transmission circuit, thetele-protection function can beblocked via a binary input signalwithout loosing the zone selec-tivity.

The control of the overreachzone Z1B (zone extension) canbe switched overto theauto-reclosure function.

Transient blocking (current re-versal guard) is provided for allthe release and blocking meth-ods in order to suppress inter-ference signals during trippingof parallel lines.

Directtransfertripping

U nder certainconditions onthe power system it is neces-sary to execute remote trip-ping of the circuit-breaker. The7SA6 relay is equipped withphase-selective intertrippingsignal inputs and outputs.

Weak-infeedprotection:echoand/ortrip(ANSI27WI)

To prevent delayed tripping ofpermissive schemes duringweak or zero infeed situations,an echo function is provided.

If no fault detector is picked upat the weak infeed end of the

line, the signalreceived here isreturned as echo to allow ac-celerated tripping at the stronginfeed end of the line. It is alsopossible to initiate phase-selec-tive tripping at the weak infeedend. A phase-selective single-pole or three-pole trip is issuedif a permissive trip signal(PO TT or U nblocking) isre-ceived and if the phase-earthvoltage drops correspondingly.

Overvoltageprotection,undervoltageprotection(ANSI59,27)

A voltage rise can occur onlong linesthat are operating atno-load or are onlylightlyloaded. The 7SA6 contains anumber of overvoltage mea-suring elements. Each measur-

ing element is of two-stage de-sign. T he following measuringelements are available:

Phase-to-earth overvoltage Phase-to-phase overvoltage Zero sequence overvoltage

The zero sequence voltagecanbe connected to the 4J D

voltage input or be derivedfrom the phase voltages.

Positive phase-sequenceovervoltage

Negative phase-sequencesystem overvoltage

Tripping bythe overvoltage

measuring elementscan be ef-fected eitherat the local cir-cuit-breaker or at the remotestation bym eansof a trans-mitted signal.

The 7SA6 is fitted, in addition,with three two-stage under-voltage measuring elements:

Phase-to-earth undervoltage Phase-to-phase undervoltage Positive phase-sequence

undervoltage

The undervoltage measuringelementscanbe blocked bymeansof a minimum current

criterionand bym eansof bi-naryinputs.


Fig.26 Pow er swing current and voltage wave forms

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Directionalearth-faultpro-tectionforhigh-resistancefaults(ANSI50N,51N,67N)

In earthed network it mayhappenthat the distance pro-tections sensitivity is not suffi-cient to detect high-resistanceearth-faults.

The7SA6 protection relay hastherefore protection functionsfor faults of this nature.

The earth-fault protection canbe used with three definite-time stagesand one inverse-time stage (lDM T ).

Inverse-time characteristicsacc. to IEC 60255-3 and ANS I/IEEE are provided (see Tech-

nical data ).A 4th definite-time stage can beapplied instead of the one in-verse-time stage.

An additional logarithmic in-verse-time characteristic is alsoavailable.

The direction decision can beperformed with the earthcur-rent and the zero sequencevoltage or with the negativesequence components V2 and

I2. In addition or asan alterna-tive the direction can be deter-mined with the earth current ofan earthed powertransformerand the zero sequence voltage.Dualpolarization applicationscan therefore be fulfilled. Eachovercurrent stage can be set inforward or reverse direction orinboth directions(non-directional).

The function is equipped withspecial digital filter algorithms,providing the elimination ofhigher harmonics. This featureis particularlyimportant forsmall zero sequence fault cur-rents which usuallyhave a highcontent of 3rd and 5th harmonic.Inrush stabilization and instan-

taneous switch-onto-fault tripp-ing can be activated separatelyfor each stage asw ell.

D ifferent operating modes canbe selected. The earth-faultprotection may be blocked dur-ing the dead time of single-poleauto-reclose cycles or duringpickup of the distance protec-tion.

Tele-(pilot)protectionfordirectionalearth-faultpro-tection(ANSI85-67N)

The directional earth-fault pro-

tection can be combined with asignalling method:

D irectionalcomparison BLOCKING UNBLOCKING

are available.

The transient blocking function(current reversal guard) is also

provided to overcome currentreversalsresulting from theclearance of short-circuits onparallel lines.

The pilot functionsfor distanceprotection and for earth-faultprotection can use the samesignalling channel or two sepa-rate and redundant channels.

Back-upovercurrentprotec-tion(ANSI50,50N,51,51N)

The 7SA 6 provides a back-upovercurrent time protection.Two definite-time stages and

one inverse-time stage(IDM T L) are available, sepa-ratelyfor phase currentsandfor the earth current. Tw o op-erating modes are selectable.The function can run in parallelto the distance protection oronly during failure of the volt-age in the VT secondarycircuit(emergency operation).

The secondary voltage failurecan be detected bythe inte-grated fuse failure monitor orvia a binary input from a VTminiature circuit-breaker (VTm.c.b. trip).

Inverse-time characteristicsacc. to IEC 60255-3 andANSI/IEEE are provided (see T echnical data ).

Instantaneoushighspeedswitch-onto-faultovercur-rentprotection(ANSI50HS)

Instantaneous tripping is re-quired when energizing a faultyline. In the event of Iarge faultcurrents, the high speedswitch-onto-fault overcurrentstage can initiate very fastthree-pole tripping.

With smaller fault currents, in-stantaneous tripping afterswitch-onto-fault is also possi-ble with the overreachdis-tance zone Z1B or with pickup.

The switch-onto-fault initiationcan be detected via the binaryinput manual close or auto-maticallyvia measurement.

Earth-faultdetectioninsys-temswithastar-pointthatisnoteffectivelyearthed

In systems with an isolated orresonant earthed (grounded)star-point single-phase earthfaults can be detected. T he fol-lowing functions are integratedfor this purpose:

Detection of an earth fault bymonitoring of the displace-ment voltage

Determination of the faultedphase bymeasurement ofthe phase-to-earth voltage

Determination of the earth-fault direction byhighly accu-rate measurement of theactive and reactive power

components in the residualearth fault current.

Alarm or trip output can beselected in the event of anearth fault in the forward di-rection.

O peration measurement ofthe active and reactive com-ponent in the residualearthcurrent during an earth fault.

Earth-fault direction detectioncan also be effected on the ba-sis of the transient earth-faultprinciple by interfacing with theadditionalunit 7SN60.Procedures for logging, timestamping and event recordingfor the network control systemare standardized bythe 7SA 6.

Breakerfailureprotection(ANSI50BF)

The 7SA6 relayincorporates atwo-stage circuit-breaker fail-ure protection to detect thefailure of tripping comm and ex-ecution, for example due to adefective circuit-breaker. Thecurrent detection logic isphase-selective and can there-fore also be used in single-poletripping schemes. If the faultcurrent is not interrupted aftera settable time delay hasex-

pired, a retrip command or abusbar trip comm and is gener-ated.



Functions

Fig.27Normal inverse ( )

t T=

014

10 02

..

I Ip

pFig.28Transientearth-fault relay7SN 60

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(contd)

The breaker failure protectioncan be initiated byall inte-

grated protection functionsaswell asby external devices viabinaryinput signals.

STUBbusovercurrentpro-tection(ANSI50(N)-STUB)

The STU B bus overcurrent pro-tection is a separate definite-time overcurrent stage. I t canbe activated via a binary inputsignalling that the open line iso-lator (disconnector) is open.

Separate settingsare availablefor phase and earth faults.

Auto-recIosure(ANSI79)

The 7SA 6 relay is equippedwith an auto-recIosure function(A R ). The function includesseveral operating modes:

3-pole auto-recIosure for alltypesof faults; differentdead times are available de-pending on the type of fault

1-pole auto-recIosure for1 -phase faults, no reclosingfor multi-phase faults

1-pole auto-recIosure for1-phase faults and for2-phase faults without earth,no reclosing for multi-phasefaults

1-pole auto-recIosure for1-phase and 3-poleauto-recIosure formulti-phase faults

1-pole auto-recIosure for1-phase faults and 2-phasefaults without earth and3-pole auto-recIosure formulti-phase faults

M ultiple-shot auto-recIosure Interaction with an external

device for auto-reclosing viabinary inputsand outputs

Control of the internal ARfunction byexternal protec-tion

Interaction with the internalor an external synchronismcheck

M onitoring of the circuit-breaker auxiliarycontacts

In addition to the above men-tioned operating modes, sev-eral otheroperating principlescan be employed bym eansofthe integrated programmablelogic(C FC).

Integration of auto-reclosure inthe feeder protection allowsevaluation of the line-side volt-

ages. A number of voltage-de-pendent supplementary func-tions are thusavailable:

DLCBy means of dead-linecheck, recIosure is effectedonly when the line isdeenergized (prevention ofasynchronous breaker clo-sure)

ADTThe adaptive dead time isemployed onlyif auto-reclosure at the remote sta-tion was successful (reduc-tion of stress on equipment).

RDTReduced dead time is em-ployed in conjunction withauto-reclosure where notele-protection method isemployed:Whenfaultsw ithin the zoneextension but external to theprotected line are switchedoff for rapid auto-reclosure(RA R), the RDT function de-cideson the basis of mea-surement of the return volt-age from the remote stationwhichhas not trippedwhether or not to reduce the

dead time.

Synchronismcheck(ANSI25)

Where two network sectionsare switched in bycontrol com-mand or following a 3-poleauto-recIosure, it must be en-sured that both network sec-tions are mutuallysynchro-nous. For this purpose a syn-chronism check function is pro-vided. A fterverification of thenetwork synchronism the func-tion releases the CL O SE com-

mand. AlternativeIy, reclosingcan be enabled for different cri-teria, e.g. checking that thebusbaror line is not carrying avoltage (dead line or dead bus).

Fusefailuremonitoringandothersupervisionfunctions

The 7SA6 reIayprovides com-

prehensive supervision func-tions covering both hardwareand software. Furthermore,the measured valuesare con-tinuously checked for plausibil-ity. Thusthe current and volt-age transformers are also in-cluded in this supervision sys-tem.

If anym easured voltage is notpresent due to short-circuit oropencircuit in the voltagetransformer secondary circuitthe distance protection wouldrespond with an unwanted tripdue to this loss of voltage.

This secondaryvoltage inter-ruption can be detected bymeans of the integrated fusefailure monitor. Immediateblocking of distance protectionand switching to the backupemergency overcurrent protec-tion is provided forall types ofsecondary voltage failures.

Additional measurement su-pervision functions are

Symmetryof voltages andcurrents

VT open circuit supervision Summ ation of currents and

voltages Phase-rotation supervision

Tripcircuitsupervision(ANSI74TC)

O ne or two binaryinputs foreach circuit-breaker pole canbe used for monitoring the cir-cuit-breaker trip coils includingthe connecting cables. Analarm signal is issued when-ever the circuit is interrupted.

Lockout(ANSI86)

U nder certain operating condi-tions it is advisable to blockCLO SE commandsafter aTR IP command of the relayhas been issued. O nly a man-ual Reset command un-blocks the CL O SE comm and.The 7SA 6 is equipped withsuchan interlocking logic.

Thermaloverloadprotection(ANSI49)

For thermal protection of ca-

bles and transformers an over-load protection with anearly-warning stage is pro-vided. The thermal replica canbe generated with the maxi-mum or mean value of the re-spective overtemperaturesinthe three phases, or with theovertemperature correspond-ing to the maximum phase cur-rent.

The tripping time characteris-ticsare exponential functionsacc. to IEC 60255-8 and theytake account of heat loss dueto the load current and the ac-

companying drop in tempera-ture of the cooling medium.The previous load is thereforetaken into account in the trip-ping time with overload. Asettable alarm stage can out-put a current or tempera-ture-dependent indication be-fore the tripping point isreached.

BCD-codedoutputoffaultlocation

The fault location calculated bythe unit can be output for

remote indication in BC D code.The output of the fault locationis made in percent of the setline length with 3 decimal dig-its.

Analogoutput0to20mA

Some measured valuescan beoutput asanalog values(0 to20m A). O n a plug-in module(Fig. 21) two analog channelsare made available. Up to twoplug-in modulescan be in-stalled in the 7SA6. A s anop-

tion 2, 4 or no analog channelsare available (please refer tothe selection and orderingdata). T he available measuredvalues can be gathered fromthe technical data.



16/52

Measuredvalues

The rms valuesare calculatedfrom the measured current and

voltage signals along with thepowerfactor (cos ), the fre-quency, the active and the re-active power. M easured val-uesare displayed as primaryorsecondaryvalues or in percent.The following values are avail-able for measured value pro-cessing:

CurrentsIL1, IL2, IL3, 3I0,IEE (sensitive earth current),Ipar

Voltages VL1, VL2, VL3, VL12,VL23, VL31, 3V0, Ven, Vsync

Symmetrical componentsI1,I2, V1, V2

Active power P (Watt),Reactive power Q (Var),Apparent power S (VA )

Power factorpf (= cos ) Frequency f Load (in service) impedances

3x (Rphase-earth, Xphase-earth)3x (Rphase-phase, Xphase-phase)

Energy Wp+ , Wp-, Wq+ ,Wq-

M ean aswell as minimumand maximum current andvoltage values

Earth-fault measured values M ean operating temperature Limi t-value m onitoring

Set points are monitored bymeans of the CFC . Com-mands can be derived fromthis limit value indication.

Energymetering

For internalmetering, the unitcan calculate an energyme-tered value from the measuredcurrent and voltage values(notariff metering). lf an externalmeterw ith a metering pulseoutput is available, theSIPR O TEC 4 unit can obtainand processmetering pulsesvia a binary input.

The metered values can be dis-played and passed on to thecontrol center asan accumula-tion with reset. A distinction ismade between energysup-plied and energy consumed aswell asactive and reactive en-ergy.

Functionsfortestingandcommissioning

Particular attention was paid to

provision of auxiliaryfunctionsfor commissioning during thedesign of the 7SA6. The physi-cal statusof all the binaryin-putsandoutput relays can bedisplayed and directly alteredto facilitate testing.A ll measured values can beclearlydepicted bymeans ofD IG SI 4 and simultaneouslydisplayed in different windowsas primary, secondaryor per-centage values.7SA6 unitsare provided with acircuit-breaker test function.Single-pole and three-pole

TR IP comm andscan be issuedaswell asC LO SE commands.

4selectableparametergroups

Changeover of predefined pa-rameter groups can be imple-mented bym eansof binary in-puts, the integrated operatorpanelor serial interfaces. O nchange of the network configu-ration asa result of a switchingaction, it is possible to simulta-neously match the settingsofthe protection unit to the

changed system condition.



LSP2245f.

tif

LSP2066usa.

tif

LSP2097f.

tif

LSP2065f.t

if

LSP20

64f.

tif

Fig.31O perational measured val-uesin the graphicdisplay

Fig.30Fault display

Fig.29O perational measuredvalues

Functions


17/52

Control

In addition to the protectionfunctions, the SIP RO TEC 4

units also support allcontroland monitoring functions re-quiredfor operating me-dium-voltage or high-voltagesubstations. The principle taskis reliable control of switchgearand processes. The status ofprimaryequipment or auxiliarydevices can be obtained fromauxiliarycontactsandtransferred to the 7SA 6 via bi-naryinputs. This information isupdated in the single-line dia-gram. Therefore it is possibleto detect and indicate both theCLO SE andO PEN position ora

faulty or intermediate position.The switchgear or circuit-breaker can be controlled via:

Integrated operator panel Binary inputs Substation control system DIG SI 4 Function keys.

Automation

With the integrated logic, theuser can set specific functionsfor the automation of theswitchgear or substation bymeansof a graphic user inter-face (C FC). Functions are acti-vated bym eansof functionkeys, binaryinputs or via thecommunication interface. Pro-cessing of internal protectionsignalsor measured valuesisalso possible.

Switchingauthority

The switching authorityis se-lected bysettings, D IG SI 4, bi-nary input or if available bymeansof the key-operatedswitch. lf the LO CA L modeis selected, only local switch-

ing operationsare possible.The hierarchy of the switchingauthorityis asfollows: LO CA L;DI GSI 4; REM O TE. Everyswitching operation andchange of breaker position isstored in the status indicationmemory. The switching com-mand source, switching de-vice, cause (i.e. spontaneouschange or command) andre-sult of a switching operationare stored.

Key-operatedswitches

The 7SA 63/7SA64 units are fit-ted with key-operated

switches for local/remotechangeover and for change-over between interlockedswitching operation and non-interlocked test operation.

Commandprocessing

The 7SA6 supports all thetasks required for comm andprocessing, including the pro-cessing of single and doublecommandswith or withoutfeedback aswell asmonitoringof the control process. T hecontrol actions are monitored

in terms of runtime and subjectto automaticcommand termi-nationafter feedback from theexternal processis provided tothe 7SA 6. Typical applicationsare:

Single and double com-mandsusing 1, 1 plus 1common or 2 command out-puts

U ser-definable bay interlocks O perating sequences com-

bining several switching op-erationssuch ascontrolofcircuit-breakers,disconnectorsand earthing

switches Triggering of switching oper-

ations, indications or alarmsbylogical combination of ex-isting information.

Assignmentofcommandfeedback

The positions of the circuit-breaker or switching devicesare derived byfeedback. Theseindication inputs are logicallyassigned to the correspondingcommand outputs. T he unitcantherefore distinguish

whether the indicationchanges as a consequence ofan indentional switching opera-tion or due to aspontaneouschange of state (intermediateposition).

ChatterdisableThe chatter disable featureevaluates whether the numberof status changes of an indica-tion input exceedsa specifiedvalue in a defined period oftime. If so, the indication inputis blocked for a certainperiod,so that the event list will not re-cordexcessive operations.

Filtertime

All binary indications can besubjected to a filter time (indi-cation delay) to prevent spuri-

ousoperation.

Indicationfilteringanddelay

Indications can be filtered ordelayed. Filtering servestosuppress transient changes ofpotential at the indication input.The indication is passed ononly if the indication voltage isstill present after a set periodof time. In the case of indica-tion delay, there is a delay for apreset time. The information ispassed on only if the indicationvoltage is still present after this

time.

Indicationderivation

A further indication (or a com-mand) can be derived from anexisting indication. G roup indi-cationscan also be formed.The volume of information tothe system interface can thusbe reduced and restricted tothe most important signals.

DatatransmissionlockoutA data transmission lockoutcan be activated, so asto pre-vent transfer of information tothe control centerduring workon a circuit bay.

Testmode

During commissioning a testmode can be selected; all indi-cations then have a test modesuffix for transmission to thecontrol system.


LSP2084a.

tif


18/52

Connectionforcurrentandvoltagetransformers

3 phase current transformers

with neutralpoint in the line di-rection, I4 connected assum-mation current transformer(= 3I0): Holmgreen circuit

3 voltage transformers, with-out connection of the opendelta winding on the line side;the 3V0 voltage is derived inter-nally.

Alternativecurrentmeasure-ment

The three phase current trans-formers are connected in the

usual manner. The neutralpoint is in line direction. I4 isconnected to a separate neu-tral core balance c.t. , thus per-mitting a high sensitive 3I0measurement.

Note: TerminalQ 7 of the I4transformer must be con-nected to the terminal of thecore balance c.t. pointing in thesame direction asthe neutralpoint of the phase currenttransformers (in this case inline direction) voltage connec-tion acc. to Fig. 32, 36 or 37.



IL1

IL2

IL3

I4

Fig.33 Alternative connection of current transformers for sensitiveearth-current measuring with core-balance current transformers

Fig.32 Example of connection for current and voltage transformers

Typicalconnections

IL1

IL2

IL3

I4

VL1

VL2

VL3

V4

VN

IE


19/52

Alternativecurrentconnec-tion

3 phase current transformers

with neutralpoint in the line di-rection, I4 connected to a cur-rent transformer in the neutralpoint of an earthed transformerfor directionalearth-fault pro-tection. T he voltage connec-tion is effected in accordancewith Fig. 32, 36 or 37.

Alternativecurrentconnec-tion

3 phase current transformerswith neutralpoint in the line di-

rection,I4 connected to sum-mation current of the parallel

line on parallel line compensa-tion on overhead lines. Thevoltage connection is effectedin accordance with Fig. 32, 36or 37.


Fig.35 Alternative connection of current transformers for measuringthe earth current of a parallel line

Fig.34 A lternative connection of current transformers for measuringneutral current of an earthed transformer

IL1

IL2

IL3

I4

IL1

IL2

IL3

I4


20/52

Alternativevoltageconnec-tion

3 phase voltage transformers,

V4 connected to open deltawinding (Ven) for additionalsummation voltage monitoringand earth-fault directional pro-tection. The current connectionis effected in accordance withFig. 32, 33, 34 or 35.

Alternativevoltageconnec-tion

3 phase voltage transformers,V4 connected to busbar voltagetransformer for synchro-check.

Note: Anyphase-to-phase orphase-to-earth voltage maybeemployed as the busbarvolt-age. P arameterization is carriedout on the unit. The currentconnection is effected in accor-dance with Fig. 32, 33, 34 or35.



Fig.37 Alternative connection of voltage transformers for measuring thebusbar voltage

Fig.36 A lternative connection of voltage transformers for measuring thedisplacement voltage (e-nvoltage)

Typicalconnections

VL1

VL2

VL3

V4e

n

VL1

VL2

VL3

V4


21/52

Analoginputs Rated frequency 50or60Hz(selectable)

Rated current Inom 1 or 5 A (selectable)

Rated voltage Vnom 80 to 125V (selectable)

Power consumptionwithInom = 1 AwithInom = 5 AforIE, selective with1AVoltage inputs

Approx. 0.05VAApprox. 0.3 VAApprox. 0.05VA 0.1VA

Thermal overload capacity of current circuit(rms)

Dynamic (peak value)

Earth currentSensitive

Dynamic (peak value)

500 A for 1 s150 A for 10s20 A continuous1250 A (half sine)

300 A for 1 s100 A for 10s15 A continuous750A (half sine)

Thermaloverload capacityof voltage circuit 230 V continuous

Auxiliaryvoltage Rated voltages 24 to 48V DC

60 to125V D C110 to 250V DCand115V A C (50/60H z)

Permissible tolerance -20% to + 20%

Superimposed AC voltage (peak to peak) 15%Power consumption

Q uiescentEnergized

Approx. 5 WApprox. 12 W to 18 W, depending on design

Bridging tim e during failure of the auxiliary voltageFor Vaux = 48 V and Vaux 110 VFor Vaux = 24 V and Vaux = 60 V

50ms 20ms

Binaryinputs Q uantity7SA610* -* A /E/J7SA610* -* B/F/K7SA6*1* -* A/E/J7SA6* 1*-* B/F/K7SA6*2* -* A/E/J7SA6* 2*-* B/F/K7SA6*2* -* C/G/L

RatedvoltagerangePickupthreshold

Functions are freelyassignable

57132021293324to 250V, bipolar17or 73V (selectable)

M inimum pickup thresholdFor rated voltage 24/48 V D C and 60/110/125 V D CFor rated voltage 110 to 250 V D CRanges are settable bymeans of jumpers

17 V DC73 V DC(2 operating points)

M aximum permissible voltage 300 V D C

C urrent consum ption, energized A pprox. 1.8 m A

I nput impulse suppression 220nF coupling capacitance at 220Vwith a recoverytime > 60 ms

Outputrelay Unitready contact(livestatuscontact) 1NC/NO contact1)

Com mand/indication relay

Q uantity7SA610* -* A /E/J

7SA610* -* B/F/K7SA6*1* -* A/E/J7SA6* 1*-* B/F/K7SA6*2* -* A/E/J7SA6* 2*-* B/F/K7SA6*2* -* C/G/L

7 NO contacts, 1 NC/NO contact1)

5 NO contacts,14 NO contacts, 2 NC/NO contacts1)

8 NO contacts, 4 power relays2)

21 NO contacts, 3 NC/NO contacts1)

28 NO contacts, 4 NC/NO contacts1)

11 NO contacts, 8 power relays2)

NO /NC contact

Switching capacityM akeBreakBreak (with resistive load)Break (with L/R 50ms)

1000W / VA30VA40 W25 W

Switching voltage

Permissible total current

250V

30 A for 0.5 seconds5 A continuous


Technicaldata

1) C an be set via jumper.

2) Eachpair of power relays is me-chanically interlocked to preventsimultaneousclosing.


22/52


Outputrelay(cont`d) Powerrelayfordirectcontrolof disconnectoractuatorm otors

Switching capacity

M ake for 48to 250 VBreak for48 to 250 VM ake for24 VBreak for 24V

1000 W/ VA1000 W/ VA500W/VA500W/VA

Switching voltage 250 V

Permissible total current 30 A for 0.5 seconds5 A continuous

M ax. operating time 30 s

P erm issible relative operating tim e 1 %

LED Q uantityRU N (green)ERRO R (red)LED (red), functioncanbeassigned7SA6107SA6* 1/2

11

714

Mechanical construction Housing 7XP20

Dimension Refer to pages 44 to 47 for dimension drawings

Degree of protection acc. to EN 60 529Surface-mounting housingFlush-mounting housing

frontrearfor the terminals

IP 51

IP 51IP 50IP 20 with terminal cover put on

WeightFlush-mounting housing

1/3 x 19"1/2 x 19"1/1 x 19"

Surface-mounting housing1/3 x 19"1/2 x 19"1/1 x 19"

4 kg6 kg10kg

6 kg11kg19kg

Serialinterfaces

Operatinginterface,frontofunit,

forDIGSI4

Connection Non-isolated, R S232,

9-pinsubminiatureconnector (SU B-D)Baud rate 4800 to 115200 bauds

setting as supplied: 38400 bauds; parity8E1

TimesynchronizationDCF77/ IRIG-Bsignal

Connection

Voltage levels

9-pinsubminiatureconnector (SU B-D)(terminalwith surface-mounting housing)

5 V, 12 V or24 V (optional)

Service/modeminterfaceforDIGSI4/ modem/ service

IsolatedRS232/R S485DielectrictestDistanceforR S232DistanceforR S485

9-pinsubminiatureconnector (SU B-D)500V /50H zM ax. 15mM ax. 1000m

Systeminterface IEC 60870-5-103PRO FIBUS FM S

PRO FIBUS DP1)

DN P 3.01)

Ethernet2)

Isolated R S232/RS485

Baud rateD ielectric testDistance for RS232Distance for RS485

9-pin subminiature connector (SU B-D )

4800 to 19200 bauds500 V /50HzM ax. 15 mM ax. 1000 m

PRO FIBUS RS485Dielectric testBaud rateBridgeable distance

500 V /50HzM ax. 12 M bauds1000 m at 93.75 kbauds; 100 m at 12 M bauds

PR O FIBU S fiber-opticBaud rateoptical wavelengthPermissible attenuationBridgeable distance

ST-connectorM ax. 1.5 M bauds = 820nmM ax. 8 dB for glass-fiber 62.5/125mM ax. 1.5 km

Remoterelayinterface1) Q uantity 1


Technicaldata

1) available with next firmware release

2) under development


23/52

Electricaltests

Specifications Standards IEC 60255 (product standards)AN SI/IEEE C37.90.0/.1/.2

UL 508DI N 57435Part303Forfurtherstandardssee Individualtests

Insulationtests Standards IEC 602555and 60870-2-1

Voltage test (100 % test)

A ll circuits except for auxiliarysupply, binary inputs,communicationand time synchronization interfaces

2.5 kV (rms), 50H z

Auxiliaryvoltage and binaryinputs(100 % test) 3.5 kV DC

RS485/R S232 rear side comm unication interfacesand time synchronization interface (100 % test)

500 V (rms), 50 Hz

Surge voltage test (type test)A ll circuits except for communication interfacesand tim e synchronization interface, classII I

5 kV (peak); 1.2/50 s; 0.5 J,3 positive and 3 negative surges in intervalsof 5 s

EMCtestsfornoiseimmunity(T ype tests)

Standards IEC 60255-6; IEC 60255-22(product standard)EN 50082-2 (generic standard),DIN VDE 0435Part303

High-frequencytestIEC 60 255-22-1 class II I and D IN 57 435Part 303, classI II

2.5 kV (peak); 1M H z; = 15 ms;400 surges pers; test duration2 s

Discharge of static electricityIEC 60255222 class IVand EN 6100042, class IV

8 kV contact discharge; 15 kV air discharge;both polarities; 150pF; Ri = 330

Exposure to RF field, non-modulatedIEC 60255223 (report) class II I

10V /m; 27 to 500 M Hz

Exposure to RF field, amplitude-modulatedIEC 6100043, class II I

10V/m; 80 to 1000M Hz; 80% AM ; 1 kHz

Exposure to RF field, pulse-modulatedIEC 6100043/EN V 50204, class II I

10 V/m; 900M H z; repetition frequency 200 Hz;dutycycle 50 %

Fast transient interference/burstsIEC 60255224 andIEC 6100044, classI V

4 kV; 5/50 ns; 5 kH z; burst length= 15 ms;repetition frequency 300ms; both polarities;Ri = 50 ; test duration 1 min

High energy surge voltages (SU RG E),IEC 61000-4-5 installation class II I

Auxiliary supply

M easurement inputs, binary inputs,binaryoutput relays

Impulse: 1.2/50 s

Common (longitudinal) mode: 2 kV; 12 ; 9 FDifferential (transversal) mode:1 kV ; 2; 18 F

Common (longitudinal) mode: 2 kV; 42 ; 0.5 FDifferential (transversal) mode: 1 kV ; 42; 0.5 F

Conducted RF, amplitude-modulatedIEC 6100046, class II I

10 V; 150 kHz to 80 M Hz; 80 % AM ; 1kH z

M agneticfield with power frequencyIEC 6100048, class IV ; IEC 602556

30 A /m continuous; 300 A /m for 3 s; 50 Hz0.5 mT; 50 Hz

O scillatorysurge withstand capabilityAN SI/IEEE C 37.90.1

2.5 to 3 kV (peak); 1 to 1.5 M H zdamped wave; 50 surgesper second,duration 2 s, Ri = 150 to 200

Fast transient surge withstand capabilityAN SI/IEEE C 37.90.1

4 to 5 kV; 10/150 ns; 50 Pulse persecond;both polarities; duration 2 s; Ri = 80

Radiated electromagnetic interferenceAN SI/IEEE C 37.90.2

35V /m; 25 to 1000M H z

Damped oscillation

IEC 60694, IEC 61000-4-12

2.5 kV (peak value); polarityalternating 100 kH z;

1 M H z; 10and 50 M Hz; Ri = 200 EMCtestsforinterferenceemission(T ypetest)

Standard EN 50081-1 (genericstandard)

Radio interference voltage on lines,only auxiliaryvoltageIEC-CISP R 22

150 kHz to 30 M Hzclass B

Interference field strengthIEC-CISP R 22

30 to 1000 M H zclass B



24/52


Vibrationandshockstress

in service Standards IEC 6025521 and IEC 600682

Vibration

IEC 60255211, class2IEC 6006826

Sinusoidal

10 to 60 Hz: 0.075 mm amplitude;60 to 150 Hz: 1 gaccelerationfrequency sweep 1 octave/min20 cycles in 3 orthogonal axes

ShockIEC 60255212, class1IEC 60068227

Half-sinusoidalAcceleration 5 g, duration 11 ms, 3 shockson each of the 3 axes in bothdirections

Vibration during earthquakeIEC 60255212, class1IEC 6006833

Sinusoidal1 to 8 Hz: 3.5 mm amplitude(horizontalaxis)1 to 8 Hz: 1.5 mm amplitude(vertical axis)8 to 35H z: 1 gacceleration(horizontalaxis)8 to 35 Hz: 0.5 gacceleration(vertical axis)Frequency sweep 1 octave/min1 cycle in 3 orthogonal axes

during transport Standards IEC 6025521andIEC 600682VibrationIEC 60255211, class2IEC 6006826

Sinusoidal5 to 8 Hz: 7.5 mm amplitude;8 to 150H z: 2 gaccelerationFrequency sweep 1 octave/min20 cycles in 3 orthogonal axes

ShockIEC 60255212, class1IEC 60068227

Half-sinusoidalAcceleration 15 g, duration 11 ms, 3 shockson each of the 3 axes in bothdirections

Repetitive shockIEC 60255212, class1IEC 60068229

Half-sinusoidalAcceleration 10 g, duration 16 ms,1000 shocks on eachof the 3 axesin bothdirections

Climaticstresstests

Temperatures Standards IEC 60255-6

Temperature during service 5 to + 55 C + 25 to + 131 F

Tem porarypermissible temperature limit

during service

20 to + 70C 4 to + 158 F

(T he legibilityof the displaymay be affectedabove 55C/131 F)

T em perature lim it during storage 25 to + 55 C 13 to + 131 F

Temperature limit during transport(Storage and transport with standard factorypacking)

25 to + 70 C 13 to + 158 F

H umidity Permissible humiditystress;It isrecommendedto arrangetheunitsin suchaway,that theyarenotexposedto direct sunlightorpro-nounced temperaturechangesthat could causecondensation.

Annualaverage on 75% relativehumidity;on56daysin theyearup to 93% relativehumidity;moisturecondensationduring operationisnot per-mitted.

CE-conformity The product is inconformitywith thedirectiveof theC ouncilof theEuropeanCom munitiesonthe approximationofthelawsof them emberstatesrelating to electromagneticcompatibility(EM C Council directive 89/336/EEC) andconcerningelectricalequipment forapplicationwithinspecifiedvoltagelim its (low-voltage directive 73/23EEC ).

The device is designed in accordance with the internationalstandardsof IEC 60255 and the national standardDIN 57435/Part 303 (correspondsto VD E 0435/Part 303).

Further applicable standards:AN SI/IEEE C37.90.0 and C37.90.1

Thisconformity isthe result of a test that wasper-formed bySiemensA G inaccordance withArticle 10of thedirectivein conformancewithgenericstandardsEN 50081-2andEN 50082-2fortheEM C directive andEN 60255-6forthelow-voltage directive.


Technicaldata

25/52

DistanceprotectionA NS I 21, 21N

Typesof pickup O vercurrent pickup (I> );Voltage-dependentovercurrentpickup(V );Voltage-dependentandphase angle-dependentovercurrentpickup(V /> );Impedance pickup (Z< )

Types of tripping Three-pole for all types of faults;Single-pole forsingle-phase faults / otherwisethree-pole;

Single-pole for single-phase faults and two-polephase-to-phase faults / otherwise three-pole

D istance protection zones 6, 1 of w hich as controlled zoneAll zonescan be set to forward, reverse,non-directional or inactive

Tim er stages for tripping delay

Setting range

6 for multi-phase faults3 for single-phase faults0 to 30 s or inactive (increment 0.01 s)

Zone setting X(for distance zones and Z< starting)

0.05to 250 (1A) / 0.01 to 50 (5A)(step 0.01 )

Resistance setting(for distance zones and Z< starting)

Phase-to-phase faultPhase-to-earth fault 0.05to 250 (1A) / 0.01 to 50 (5A)0.05to 250 (1A) / 0.01 to 50 (5A)(step 0.01 )

Line angle 30 to 89R reachof distance zones runs parallel to theline angle setting

O vercurrent pickup I>> (for I> > , V , V /> ) 0.25 to 10 A (1A) /1.25 to50A (5A) (step 0.01 A)M inimum current pickup I> (for V , V /> and Z< ) 0.1 to 4 A (1A) / 0.5 to 20 A (5A) (step 0.01A)M inimum current pickup I> (for V /> ) 0.1 to 8 A (1A) / 0.5 to 40 A (5A) (step 0.01A)Undervoltage pickup (for V and V /> )

Vph-e )Load angle Load angle

30 to 8090 to 120

Load zone (for Z< )

Load angleResistance

Im pedances within the load zone do not causepickup in pickup mode Z

Zero sequence voltage 3V0>for earthed networksfor resonant-earthed networks

0.05to 4A (1A) / 0.25A to 20A (5A) (step 0.01A)

1 to 100V (step 1 V) or inactive10to 200 V (step 1 V)

Earth impedance compensationParameter formatsSeparatelysettable for

RE/RL and XE/XLk0 and (k0)

RE/RL and XE/XL or k0 and (k0)D istance protection zone Z1 andhigherdistance zones(Z1B, Z2 to Z5)-0.33to + 7.00 (step 0.01)0 to 4 (step 0.01) and -45 to 45 (step 1)

Parallel line m atchingRM /RL and XM /XL

For parallel compensation0 to 8 (step 0.01)

Phase preference on double earth-faults inresonant-earthed / non-earthed netw orks

Phase preference orno preference(selectable)

Direction decision for all typesof faultsD irection sensitivity

With fault-free voltagesand/or voltage mem oryDynamicallyunlimited

TimesShortest trip tim e(m easured at the fast relay; refer to the terminalconnection diagram)

Reset time

Approx. 17 ms forfN = 50Hz

Approx. 15 ms forfN = 60Hz

Approx. 30m s

Tolerances For sinusoidal measured variables

Response values(in conformity with VD E 0435, Part 303)V and IA ngle ()

5% of setting value 3

Impedances(in conformitywith VD E 0435, Part 303)

XX

5% for 30 k 90

RR

5% for0 k 60

Time stages 1 % of setting value or 10 ms


26/52


Faultlocator O utput of thedistance to fault X, R (secondary) in X, R (primary) indistancein kilometersor in% of line length

Start of calculation W ith trip, w ith reset of pick up, w ith binary inputReactance per unit length 0.005 to 6.5 /km (1A) / 0.001to 1.3 /km (5A)

(step 0.001/km)Tolerance For sinusodial quantities

2.5 % line length for30 k 90 and Vk/Vnom > 0.1

BCD-codedoutputoffaultlocation

Indicated value Fault location in% of the line length

O utput signals M ax. 10:d[1 % ], d[2 % ], d[4 % ], d[8 % ],d[10% ], d[20 % ], d[40 % ], d[80 % ], d[100% ],d[release]

Indication range 0 % to 195 %

Tele-(pilot)protectionfordistance protectionA NSI 85-21

M odesof operation PUTT (Z1acceleration);PU TT (accelerationwithpickup); PO TT ;D irectionalcomparison; Reverse interlockingPilotwire comparison;U nblocking; Blocking

Additional functions Echo function(refer to weak-infeed function)Transient blocking for signaling method with mea-suring range extension

Transmission and receptionsignals Phase-selective signals available for maximumselectivity with single-pole tripping;Signalsfor 2 and 3 ended lines

Weak-infeedprotectionA NS I 27-WI

O perating modeswith carrier(signal) receptionandnofault detection

EchoEchoandtrip with undervoltage

U ndervoltage phase-earth 2 to 70 V (step 1 V)

T ime delay 0 to 30 s (step 0.01s)

Echo impulse 0 to 30 s (step 0.01 s)

TolerancesVoltage thresholdTimer

5 % of setting value or 0.5 V1 % of setting value or 10 ms

Externalsignalstrip Direct phase-selective trippingthroughbinaryinput Alternativelywithorw ithoutauto-reclosure

Tripping delay 0 to 30 s (step 0.01s)T imer tolerance 1 % of setting value or 10 ms

PowerswingdetectionA NS I 68, 68T

Powerswingdetectionprinciple M easurementof therateofchangeof the imped-ance vectorandm onitoringof thevectorpath

M ax. detectable powerswing f requency Approx. 7H z

O perating modes Power swing blocking and/orpower swing tripping forout-of-step conditions

Powerswing block ing programs A llzonesblocked; Z1/Z1B blocked;Z2 to Z5 blocked; Z1, Z1B, Z2 blocked

Detectionof faults during power swing blocking Reset of power swing blocking foralltypesoffaults


Technicaldata


27/52


Back-upovercurrentprotectionAN SI 50(N), 51(N)

O perating modes A ctive onlywith lossof VT secondarycircuitoralwaysactive

Characteristic 2 definite-time stages / 1 inverse-time stage

Instantaneoustrip after switch-onto-fault Selectable for everystageD efinite-time overcurrentprotectionA NS I 50, 50N

PhasecurrentpickupIph>> 0.1 to 25A (1A) /0.5to125A (5A) (step0.01A)

Earth current pickup 3I0> > 0.05 to 25 A (1A) / 0.25to 125 A (5A)(step 0.01 A )

Phase current pickup Iph> 0.1 to 25 A (1A) / 0.5 to 125 A (5A) (step 0.01 A )

Earth current pickup 3I0> 0.05 to 25 A (1A) / 0.25to 125 A (5A)(step 0.01 A )

T ime delay 0 to 30 s (step 0.01s) or inactive

TolerancesCurrent pickupDelaytimes

3% of setting value or 1% Inom1 % of setting value or 10 ms

O perating time Approx. 25 ms

Inverse-tim e overcurrentprotectionA NS I 51, 51N

PhasecurrentpickupIP 0.1to4A (1A) /0.5to20A (5A) (step0.01A)

Earth current pickup 3I0P 0.05to 4 A (1A) / 0.25to 20 A (5A) (step 0.01 A )

Tripping time characteristics acc. to IEC 60255-3 Normal inverse; very inverse; extremelyinverse;long time inverse

Tripping time characteristics acc. to AN SI /IEEE(not for DE region, see selectionand ordering data10th position)

Inverse; short inverse; long inverse;moderately inverse; veryinverse;extremelyinverse; definite inverse

Time multiplier for IEC characteristics T Tp = 0.05 to 3 s (step 0.01 s)

Time multiplier for A NSI characteristics D DIP = 0.5 to 15 (step 0.01)

Pickup threshold Approx. 1.1I/Ip (ANSI: I/Ip = M )

Reset threshold Approx. 1.05 x I/Ip (ANSI: I/Ip = M )

TolerancesO perating time for2 I/Ip 20 5% of setpoint 15ms

Directionalearth-faultovercurrentprotectionfor high-resistancefaultsin sys-temswithearthedstarpointA NS I 50N , 51N, 67N

C haracteristic 3 definite-tim estages /1 inverse-tim estage or4definite-time stagesor3definite-time stages/ 1V0invers. stage

Inrush restraint Selectable for every stage

Instantaneoustrip after switch-onto-fault Selectable for everystage

Influence of harmonicsStages 1 and 2 (I>>> and I> > )

Stages 3 and 4 (I> and inverse 4th stage)

3rd and higherharmonics are completelysuppressed bydigital filtering

2rd and higherharmonics are completelysuppressed bydigital filtering

D efinite-time overcurrentprotectionAN SI 50N

Pickupvalue 3I0>> > 0.5 to 25A (1A) /2.5to125A (5A) (step0.01A)

Pickup value 3I0> > 0.2 to 25 A (1A) / 1 to 125 A (5A) (step 0.01 A)

Pickup value 3I0> 0.05 to 25 A (1A) / 0.25to 125 A (5A)(step 0.01 A )Neutral (residual) current transformer with normalsensitivity (refer to ordering data, position 7);0.003 to 25 A (1A) / 0.015to 125 A (5A)(step 0.001 A )Neutral (residual) current transformer with highsensitivity (refer to ordering data, position 7)

Pickup value 3 I0, 4th stage 0.05 to 25 A (1A) / 0.25to 125 A (5A)

(step 0.01 A )Neutral (residual) current transformer with normalsensitivity (refer to ordering data, position 7);

0.003 to 25 A (1A) / 0.015to 125 A (5A)(step 0.001 A )Neutral (residual) current transformer with highsensitivity (refer to ordering data, position 7)

T ime delayfordefini te time stages 0to 30 s(step 0.01s) or inactive

TolerancesCurrent pickupDelaytimes

3% of setting value or 1% IN1 % of setting value or 10 ms

Comm and / pickup times3I0>> > and 3I0> > Approx. 30 ms

Comm and / pickup times3I0> and 3I0, 4th stage A pprox. 40 ms

28/52


Technicaldata

Directionalearth-faultovercur-rentprotection(continued)Inverse-tim e overcurrentprotectionstage

AN SI 51N

Earth-currentpickup 3I0P 0.05to4A (1A) /0.25to20A (5A) (step0.01A)Neutral( residual) current transformer with normalsensitivity(R eferto orderingdata, position 7)0.003to4A (1A) /0.015to20A (5A) (step0.001A)

Neutral( residual) current transformer with highsensitivity(referto orderingdata, position 7)

Trippingcharacteristicsacc. toIEC 60255-3 Inverse;veryinverse;extremelyinverse;longtime

ANSI /IEEE trippingcharacteristic(notfor regionD E, referto orderingdata, position10)

Inverse; shortinverse; long inverse;moderatelyinverse; veryinverse;extremelyinverse; definite inverse

Inverse logarithmic tripping characteristics(not forregions DE andUS, referto ordering data, position10)

Pickup threshold

t T TP P

= 3 0 3 03 0

3 0I I

I

Imax ln

p

1.1 to 4.0x I/Ip (step 0.1 s)

TimemultiplierforIEC Tcharacteristics Tp = 0.05to 3s (step0.01s)

TimemultiplierforANSI Dcharacteristics DI0P = 0.5to15(step0.01)

Pickup threshold Approx. 1.1I/Ip (ANSI: I/Ip = M )I nverse logarithmic pickup threshold 1. 1 to 4. 0x I/I0P (step 0.1)Reset threshold Approx. 1.05I/I0P (ANSI: I/Ip = M )

Tolerance

O perating time for2I/Ip 20 5% ofsetpoint 15msZerosequencevoltageprotectionV0inverse Tripping characteristic t

VV

=

2

4

0

s

0inv min

D irectiondecisionAN SI 67N

M easuredsignals fordirectiondecision 3I0 and3V0 or3I0 and3V0 andIY (starpoint currentof anearthedpowertransformer) or3I2 and3U2 (negative phase-sequence system)

M in. zerosequencevoltage3V0 0.5to10 V (step0.1V)

M in. currentIY (of earthed transform ers) 0.05 to 1 A (1A) /0.25to5A (5A) (step0.01A)

M in. negative phase-sequence system voltage 3V2 0.5to10 V (step0.1V)

M in. negative phase-sequence system current 3I2 0.05to1A (1A) /0.25to5A (5A) (step0.01A)

Inrushcurrentblocking,capable of beingactivatedforeachstage

Component ofthe2n d

harmonic 10 to 45 % of the fundamental (step 1% )

M ax. current, whichcancelsinrushcurrent blocking 0.5to25 A (1A) /2.5to125A (5A) (step0.01A)

Tele-(pilot)protectionf ordirectionalearth-fault protectionA NSI 85-67N

O perating modes D irectional com parison, blocking, unblocking

A dditional functions Echo (see function weak infeed );transient blocking

Send and receive signals Suitable for 2 and 3 term inal lines

Instantaneoushighspeedswitch-onto-faultovercurrentprotectionAN SI 50HS

O perating mode A ctive onlyafter CB closing; instantaneoustripafterpickup

Pickup current I> >> 1 to 25 A (1A) / 5 to 125 A (5A) (step 0.01 A)

Reset ratio Approx. 0.90

TolerancesCurrentstarting 3% ofsetting value or1 % IN

Shortest trippingtime(with reference to fast relay, seeconnectiondiagram)

Approx.12 ms

Voltageprotection

A NS I 59, 27

O perating modes Local tripping and/or carrier trip impulse

forremote end, onlyindicationVoltage protection PickupvaluesVPH-E> > , VPH -E> 1 to 170V (step 0.1V)

PickupvaluesVPH-PH> > , VPH-PH> 2 to 220V (step 0.1V)

Pickupvalues3V0>> , 3V0>(3V0 canbem easured via V4transformers orcalculatedbythe relay)

1to 220V (step0.1V)

PickupvaluesV1> > , V1> (positivephase-sequencesystem) 2 to 220V (step 0.1V)

PickupvaluesV2> > , V2> (negative phase-sequencesystem) 2 to 220V (step0.1 V)

Reset ratio (settable) 0.5 to 0.98 (step 0.01)

Undervoltageprotection P ickupvaluesVPH-E< < , VPH -E< 1 to 100V (step 0.1V)

PickupvaluesVPH-PH< < , VPH-PH< 1 to 170V (step 0.1V)

PickupvaluesV1< < , V1< (positivephase sequence system) 1 to 100V (step 0.1V )

Blockingof undervoltageprotectionstages M inimum current;binaryinput

Reset ratio 1.05

T im e delays C an be set separately for all m easuring stages 0 to 30 s (step 0. 01s) or inactive

Command/pickuptimeCommand/pickuptimefor3V0-stages

Approx.30 msApprox.65 ms

TolerancesVoltagelim it valuesTim e stages

3% ofsetting value or0.5V1% of settingvalueor 10ms

29/52

ThermaloverloadprotectionAN SI 49

Factor k acc. to IEC 60255-8 0.1 to 4(steps0.01)Time constant 1 to 999.9min (steps0.1m in)Thermal alarm stageAlarm/Trip 50 to 100 % referred to tripping temperature

(steps1 % )Current-based alarm stage IAlarm 0.1 to 4 A (1A) /0.5to 5 A (5A) (steps 0.01 A)Calculating m ode for overtemperature max, mean, withImax

Pickup time characteristic( )

t =

ln

I I

I I2

2 2

2

pre

nomk

Reset ratio/Alarm/Trip

I/IAlarm

Approx. 0.99Approx. 0.99Approx. 0.97

O verload measured values /Trip L1; /Trip L2; /Trip L3; /TripTolerances Class 10% acc. to IEC 60255-8

BreakerfailureprotectionAN SI 50BF

Numberof stages 2Pickup of current element 0.05 to 20 A (1A) / 0.25to 100 A (5A)

(step 0.01 A )Time delaysT11phase, T13phase, T2 0 to 30 s (steps 0.01s) or inactive

Additional functions Earth-fault protectionCB synchronism monitoring

Reset time 10 ms, typical

TolerancesCurrent limit valueTime stages

3% of setting value or 1% Inom1 % of setting value or 10 ms

Auto-reclosureAN SI 79

Numberof auto-reclosures Up to 8O perating mode O nly 1-pole; only 3-pole, 1-or 3-poleO perating modeswithline voltage check DLC dead-line check

AD T adaptive dead timeRD T reduced dead time

Dead times T1-ph, T3-ph, TSeq 0 to 1800 s (step 0.01 s) or inactive

Action times 0.01 to 300 s(step 0.01s) or inactive

Reclaim times 0.5 to 300 s (step 0.01s)

Start-signal m onitoring tim e 0.01 to 300 s ( steps 0.01s)

Additional functions Synchro-check request

3-phase intertrippingCL O SE command intertripping of remote endCheck of CB ready stateBlocking with manualC LO SE

Voltage limit valuesfor DL C, A DT , R DTHealthy line voltageDead line

30to 90 V (steps1 V)2 to 70V (steps 1 V)

TolerancesTime stagesVoltage limit values

1 % of setting value or 10 ms 3% of setting value or0.5 V

SynchronismcheckAN SI 25

Initiate options Auto-reclosure;M anualCLO SE control

O perating modesLine dead / busbar liveLine live /busbar deadLine dead /busbar deadLine and busbar live

VLine< / VBB>VLine> / VBB 0.7 and V > 50% Vnom and I> 50 % Inom 5 %

Analogmeasuredvalueoutput0to20mA

N umber of analog channels 2 per plug-in moduleAlternatively1 or2 orno plug-in module(R eferto orderingdata, position11andO rdercodeforposition12)

Indication range 0 to 22 mA

Selectable measured values Fault location [ % ]; fault location [ km]; VL23 [% ];IL2 [% ]; |P| [% ]; |Q| [% ]; breaking current Imax-primary

M ax. burden 350

Faultrecordstorage Analog channels 3xIPhase, 3I0, 3I0PAR3x VPhase, 3V0, VSYNC , Ven

M ax. number of available recordings 8, backed-up bybatteryif auxiliaryvoltagesupply fails

Sampling intervals 20 samplings per cycle

Total storage time Approx. 15 s

Binary channels Pickup and trip information; number andcontents can be freely configured bythe

userM ax. numberof displayed binarychannels 40

Control N um ber of sw itching units D epends on the num bers of binary /indicationinputsandindication/commandoutputs

Control commands Single command / double command1, 1plus1 commonor 2 pole

Feed back CLO SE, TR IP, intermediate position

Interlocking Freely configurable

Local control Control via menu, function keys,control keys (if available)

Remote control Control protection, D IG SI, pilot wires

Additionalfunctions M easured value supervision Current sumCurrentsymmetryVoltagesumVoltagesymmetryPhaserotation

Fuse failurem onitorIndications

O perational indications

System disturbance indication

Earth-fault indication

Buffer size 200

Storage of indications of the last 8 faults,buffersize 600

Storage of indications of the last 8 faults,buffersize 200

Sw itching statistics N um ber of break ing operations per c.-b. poleSum of breaking current perphaseBreaking current of last trip operationM ax. breaking current perphase

Circuit-breaker test TR IP/CLO SE cycle, 3 phasesTRIP /CLO SE per phase

D ead time forc. -b. T R IP / CL OSE cycle 0 to 30s (steps 0. 01s)

C om missioning support O perational m easured values, c. -b. test,status displayof binaryindication inputs,setting of output relays, generation

of indications for testing serial interfacesP hase rotation adjustm ent C lock wise or anti-clockw ise


32/52


O peratorpanelwith:-4-line backlit display,-functionkeys,-numericalkeys,-PC interface


Selectionandorderingdata

Distance protection 7SA61o o o o o o o o o o o1 2 3 4 5 6 7 8 9 10 1112 13141516

Housing, number of LEDs

Housing width 1/3 19", 7 L ED s 0

Housing width 1/2 19", 14 LED s 1


M easuring input (4 x V, 4 x I)Iph = 1 A, Ie = 1 A (min. = 0.05 A) 1

Iph = 1 A, Ie = sensitive (min. = 0.003 A) 2

Iph = 5 A, Ie = 5 A (min. = 0.25 A) 5


Auxiliary voltage (pow er supply, binary inputs)

24 to 48 V D C , binary input threshold 17 V2)

2

60 to 125 V D C, binary input threshold 17 V2) 4

110 to 250 V DC , 115 V AC, binary input threshold 73 V2)

5

Binary/indicationinputs

Indication/commandoutputs incl.live statuscontact

Fastrelay

3)Powerrelay

4)Flush-mountinghousing/screw -typeterminals

Flush-mountinghousing/plug-interminals

Surface-mountinghousing/screw-typeterminals

for 7SA610

5 9n

A

5 9n

E

5 9n

J

7 6n

B

7 6n

F

7 6n

K

for 7SA611

13 10 7n

A

13 10 7n

E

13 10 7n

J

20 9 4n

B

20 9 4n

F

20 9 4n

K

for 7SA612

21 18 7n

A

21 18 7n

E

21 18 7n

J

29 26 7n

B

29 26 7n

F

29 26 7 n K33 12 8

n

C

33 12 8n

G

33 12 8n

L

Designation O rder No.

v vv v

1) T ransition between the two auxiliaryvoltage ranges canbe selectedbym eans of jumpers.

2) T he binaryinput thresholdsare selectable in two stages by means

of jumpers.3) Fast relaysare identified in the terminal connection

diagram.

4) Power relayfor direct controlof disconnector actuator motors.Each pair of contactsis mechanicallyinterlocked to prevent simultaneousclosure.

Refer to pages33 to 35


33/52

O peratorpanelwith:-backlit graphicdisplayforsingle-line diagram

-control keys,-k ey-operated switches,-functionkeys,-numericalkeys,-PC interface


Distance protection 7SA63o o o o o o o o o o o1 2 3 4 5 6 7 8 9 10 1112 13141516




M easuring input (4 x V, 4 x I)

Iph = 1 A, Ie = 1 A (min. = 0.05 A) 1


Iph = 5 A, Ie = 5 A (min. = 0.25 A) 5




2

60 to 125 V D C, binary input threshold 17 V2)

4110 to 250 V DC , 115 V AC, binary input threshold 73 V

2) 5



Fastrelay

3)Powerrelay



Surface-mountinghousing/screw-typeterminals

for 7SA631

13 10 7n

A

13 10 7n

E

13 10 7n

J

20 9 4n

B

20 9 4n

F

20 9 4n

K

for 7SA632

21 18 7n

A

21 18 7n

E

21 18 7n

J

29 26 7n

B

29 26 7n

F

29 26 7n

K

33 12 8n

C

33 12 8n

G

33 12 8n

L

v v v v



2) T he binaryinput thresholdsare selectable in two stages bymeans


diagram.

4) Pow er relayfor direct control of disconnector actuator motors.Each pair of contactsis mechanicallyinterlocked to prevent simulta-neousclosure.



34/52


Units withdetached operatorpanel-backlit graphic display-control keys-k ey-operated switches-functionkeys-numericalkeys-PC interface


Selectionandorderingdata

Distance protection 7SA64o o o o o o o o o o o





M easuring input (4 x V, 4 x I)

Iph = 1 A, Ie = 1 A (min. = 0.05 A) 1


Iph = 5 A, Ie = 5 A (min. = 0.25 A) 5




2

60 to 125 V D C, binary input threshold 17 V2)

4110 to 250 V DC , 115 V AC, binary input threshold 73 V

2) 5



Fastrelay

3)Powerrelay



for 7SA641

13 10 7n

A

13 10 7n

J

20 9 4n

B

20 9 4n

K

for 7SA642

21 18 7 n A21 18 7

n

J

29 26 7n

B

29 26 7n

K

33 12 8n

C

33 12 8n

L

1 2 3 4 5 6 7 8 9 10 1112 13141516

v v v v


2) T he binaryinput thresholdsare selectable in two stages by means


diagram.

4) Power relayfor direct controlof disconnector actuator motors.Each pair of contacts is mechanicallyinterlocked to prevent simulta-neousclosure.



35/52

Distanceprotection 7SA6

-

-

Region-specific default settings / language settings

Region DE, language: G erman; selectable A

Region World, language: English (G reat Britain); selectable B

Region US, language: English (U SA ); selectable C

Port B

none 0

System -port, IEC protocol, electric RS232 1

System -port, IEC protocol, electric RS485 2

System -port, IEC protocol, optical 820nm, ST -connector 3

System-port, PR O FIBU S FM S Slave1), electric RS485 4

System-port, PR O FIBU S FM S Slave1), optical, double ring, ST-connector 6

2 analog outputs, each 0.....20 mA 7

System -port2), PR O FIBU S DP, electric RS485 9 L 0 ASystem -port2), P R O FIBU S D P, optical 820nm, double ring, ST -connector 9 L 0 B

System -port2), D NP 3.0, electricR S485 9 L 0 G

System -port2), D NP 3.0, optical820nm, ST-connector 9 L 0 H

Port C and port D

Port C: DI G SI/modem, electricR S232,Port D: empty 1

Port C: DI G SI/modem, electricR S485,Port D: empty 2

Port C and Port D installed 9 M o o

Port C

DI G SI/modem, electricR S232 1

DI G SI/modem, electricR S485 2

Port D

Remote relayinterface2): optical 820 nm, two ST -connectors, fiberlength up to 1.5 kmFor direct connection via multimode fiber or comm unication networks A

Remote relayinterface2): optical 820 nm, two ST -connectors, fiberlength up to 3.5 kmFor direct connection via multimode fiber B

Remote relayinterface2): optical 1300 nm, tw o ST-connectors, fiber length up to 10 kmFor direct connection via monomode fiber C

Remote relayinterface2): optical 1300 nm, tw o FC-connectors, fiber length up to 35 kmFor direct connection via monomode fiber D

Tw o analog outputs, each0...20 mA K

vv v v v

Designation O rder No. O rder code

1) For operationw ith SIC AM stationcontrol systems.

2) W ith next firmw are release.

Sieme

Documents

7SA6 Distance Protection Relay for All Voltage Levels