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SIPROTEC 4 7UM611/612 Multifunction Generator …

Protection Systems Catalog SIP 6.1 ⋅2000 SIPROTEC 4 7UM611/612 Multifunction Generator Protection Relay


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Protection SystemsCatalogSIP 2000SIPROTEC 47UM611/612Multifunction Generator Protection RelayGenerator Protection RelayPageDescription2to5DIGSI 4 Operating program6 and 7Communication8 and 9Functions10 to 13Typical applications14 to 17Technical data18 to 25Selection and ordering data26Connection diagrams28 and 29Siemens SIP 20001 Siemens AG 2000SIPROTEC 47UM611/612MultifunctionGenerator Protection RelayFirmwareversion SIP 2000Accessories27~Advantages to younCost-effectivenessnHigh degree of automationnUser-friendly operationnLow planning and engineeringeffortnFast, flexible mounting, reducedwiringnSimple, short commissioningnSimple spare part stockingnHigh flexibilitynHigh reliability and availabilitynState-of-the-art technologynCompliance with internationalstandardsnIntegration in a control system}Dimensions30 and 31ApplicationThe 7UM6 protection relays ofthe SIPROTEC 4 range arecompact multifunction unitswhich have been developedfor small to medium-sizedpower generation plants. Theyincorporate all the necessaryprotective functions and areespecially suitable for the pro-tection of: Hydro and pumped-storagegenerators Cogeneration stations Private power stations usingregenerative energy sourcessuch as wind or biogases Power generation withdiesel generators Gas turbine power stations Industrial power stationsand Conventional steam can also be employed forprotection of motors and numerous other additionalfunctions assist the user in en-suring cost-effective systemmanagement and reliablepower supply. Measured val-ues display current operatingconditions. Stored status indi-cations and fault recording pro-vide assistance in fault diagno-sis not only in the event of adisturbance in generator of the unitsmakes it possible to imple-ment effective designThe SIPROTEC 4 units have auniform design and a degreeof functionality which repre-sents a whole new quality inprotection and operation has been de-signed according to ergonomiccriteria. Large, easy-to-readdisplays were a major designaim. The DIGSI 4 operatingprogram considerably simpli-fies planning and engineeringand reduces reliableThe 7UM6 hardware is basedon 20 years of Siemens experi-ence with numerical protectionequipment. State-of-the-arttechnology and a high-effi-ciency 32-bit microprocessorare employed. Production issubject to exacting qualitystandards. Special attentionhas been paid to electromag-netic compatibility and thenumber of electronic moduleshas been drastically reducedby the use of highly software design incorpo-rates accumulated experienceand the latest technical knowl-edge. Object orientation andhigh-level languageprogramming, combined withthe continuous quality assur-ance system, ensure maxi-mized software logicThe integrated programmablelogic function allow the user toimplement his own functionsfor automation of switchgear(interlocking) via a graphic userinterface. The user can alsogenerate user defined mes-sages. Adjustments can easilybe made to the varying powerstation functionsNumerous protection func-tions are necessary for reliableprotection of electrical ma-chines. Their extent and com-bination are determined by avariety of factors, such as ma-chine size, mode of operation,plant configuration, availabilityrequirements, experience anddesign leads of necessity tomultifunctionality, which is im-plemented in outstandingfashion by numerical order to satisfy differing re-quirements, the combinationof functions is scalable (seeTable 1). Selection is facilitatedby division into three groups. Basic configurationOne application is concen-trated on small generators oras backup protection for largergenerators. The function mix isalso an effective addition totransformer differential protec-tion with parallel-connectedtransformers. The functionsare also suitable for systemdisconnection. Standard configurationThis function mix is recom-mended for generator outputsexceeding 1 is also suitable for protectionof synchronous application is as back-up protection for the largerblock units. Full configurationHere, all protection functionsare available and are recom-mended from generator out-puts exceeding 5 protection for thelarger block units is also a rec-ommended 4 7UM611/612Multifunction Generator Protection RelayDescription2Siemens SIP 2000Table 1Function mix of the generator protection 7UM61Protection functionsAbbre-viationANSI-N BasicStandardFullStator earth-fault protectionnon-directional, directionalV0>, 3I0> (V0,3I0)59N, 64G67GXX XSensitive earth-fault protection(also rotor earth-fault protection)IEE>50/51GN(64R)XX XStator overload protectionI2t49 X X XDefinite time-overcurrent protectionwith undervoltage seal-inI>+V<51XXXDefinite time-overcurrent protection,directionalI>>, Direc. 50/51/67XXXInverse time-overcurrent protectiont = f (I)+V< 51VXXXOvervoltage protectionV>59XXXUndervoltage protectionV<27XXXFrequency protectionf<, f>81XXXReverse power protection P32RXXXOverexcitation protection (Volt/Hertz)V/f24XXXFuse failure monitorV2/V1,I2/I160FLXXXExternal trip coupling (7UM611/7UM612) circuit supervision (7UM612) protectionP>, P<32FXXUnderexcitation protection1/xd40XXNegative sequence protectionI2>, t =f(I2)46XXBreaker failure protectionImin>50BFXXInadvertent energization protectionI>, V<50/27X100%-stator-earth-fault protectionwith 3rd harmonicsV0(3rd harm)59TN27TN(3rd h.)XImpedance protection with (I>+V<)-pick-upZ<21XMeasurementBased on years of experience,high-efficiency protection algo-rithms have been imple-mented which are adapted es-pecially to generator , irrespective of the gen-erator frequency at the time, ahigh degree of measurementaccuracy is achieved by virtueof the sampling frequency cor-rection in the range of11 to 69 Hz. Filter algorithmssuppress the higher frequencytransient phenomena andaperiodic DC configurationThe units are available in 2 ver-sions as the 7UM611 in1/319-inch and the 7UM612 in 19-inch width. The softwarefunctions and subassemblybreakdown are identical. The7UM612 possesses more bi-nary inputs and outputs and issuitable for incorporation inolder or more complex SIPROTEC 4 units pos-sess up to three serialinterfaces: Front interface for connect-ingaPC Service interface for con-necting a PC via modem System interface for con-necting to a control systemvia IEC 60870-5-103 orPROFIBUS-DP;Modbus RTUand an input for Time synchronization viaIRIG B or DCF 77Operational measured val-uesIn order to assist system man-agement and for commission-ing purposes, all relevant mea-sured values are displayed asprimary and secondary valueswith unit and values relating tothe object to be measured values can alsobe transferred via the serial addition, the programmablelogic permits limit value scansand status indications values are available inthe form of energy meteredvalues for the active and reac-tive energy supplied and arealso provided by anelapsed-hour indicationsThe SIPROTEC 4 units provideextensive data for fault analy-sis, as well as control. All indi-cations listed below are pro-tected against power supplyfailure. Fault indicationsThe last eight faults arestored in the unit at all fresh fault erases the old-est one. The fault indicationspossess a time resolution of1 ms. They provide detailedinformation on fault buffer memory is de-signed for a total of 600 indi-cations. Operational indicationsAll indications that are not di-rectly associated with thefault ( operating orswitching actions) are storedin the status indicationbuffer. The time resolution is1 ms, buffer size: 200 recording up to 5 or 80secondsAn instantaneous value orRMS value recorder is pro-vided. The firmware permitsstorage of 8 fault can be effected bymeans of pickup, tripping, bi-nary input, the DIGSI 4 operat-ing program or by the the case of the instanta-neous value recording, the in-put variables (4 x u and 4 x i )are recorded at increments ms at 50 Hz or ms at60 Hz. The total duration is5 seconds. If the time is ex-ceeded, the oldest fault re-cording in each case is protection functions withlong delay times are activated,the RMS Value recording isrecommended. Storage of rel-evant calculated variables (V1,VE,I1,I2,IEE, P, Q, f-fn) takesplace at increments of one cy-cle. The total time is 80 synchronizationA battery-backed clock is astandard component and canbe synchronized via a synchro-nization signal (DCF77; IRIG Bvia satellite receiver), binary in-put, system interface orSCADA ( SICAM). A dateand time are assigned to assignable binary in-puts and outputsBinary inputs, output relaysand the LEDs are assignablewith indications, user-specifi-cally and independently of tripping matrix is imple-mented by means of the firm-ware. It is simplicity itself toset the tripping programs. Thefirmware assists primary test-ing by functional suppressionof the trip self-monitoringThe hardware and softwareare continuously monitored. Ifabnormal conditions are de-tected, the unit signal immedi-ately. In this way, a great de-gree of safety, reliability andavailability is battery monitoringThe battery buffers the indica-tions and fault recordings inthe event of power supplyvoltage failure. Its function ischecked at regular intervals bythe processor. If the capacityof the battery is found to bedeclining, an alarm indication setting parameters arestored in the Flash-EPROMwhich are not lost if the powersupply or battery fails. TheSIPROTEC 4 unit remains SIP 20003Figure local operationMany advantages are alreadyto be found on the clear anduser-friendly front panel:nPositioning and grouping ofthe keys supports the natu-ral operating processnLarge non-reflective back-litdisplaynProgrammable (freely as-signable) LEDs for impor-tant messagesnArrows arrangement of thekeys for easy navigation inthe function treenOperator-friendly input ofthe setting values via thenumeric keys or DIGSI 4nFour programmable keysfor frequently used func-tions >at the press of a but-ton<SIPROTEC 4 7UM611/612Multifunction Generator Protection RelayDescriptionLocal operationAll operator actions can be ex-ecuted and information dis-played on an integrated userinterface:tOn the LCD display, process and device infor-mation can be displayed as text in variouslists. Frequently displayed information in-cludes protection information, metered val-ues, protection information, general indica-tions and alarms as well as binary informationon inputs and (fourteen for 7UM612) configurable(parameterizable) LEDs are used to displayany process or device information. The LEDscan be labeled based on user LED reset key resets the configurable function keys permit theuser to execute frequently used actions fastand simple. Typical applications include jumpsto certain points in the menu tree to displaythe operational measured values orindicationssKeys for navigationFigure 2SIPROTEC 4 operator interface 4Siemens SIP 2000Siemens SIP 20005Connection techniques andrack mounting case with nu-merous advantagesThe 7UM611 is configured in1/319 inch, and the 7UM612 in 19 inch width. This meansthat the units of previous mod-els can be height throughout all casewidth increments is 243 wires are connected di-rectly or by means of cablering , versions withplug-in terminals are also avail-able. These permit the use ofprefabricated cable the case of surface panelmounting, the connecting ter-minals are in the form ofscrew terminals at top and bot-tom. The communication inter-faces are also arranged on thesame drawings areshown on pages 32 and 4Rear view withscrew terminalFigure 5Rear view with wiringterminal safety cover andserial 4, the PC program foroperating protection relaysThe PC operating programDIGSI 4 is the interface be-tween theuser and theSIPROTEC 4 units. It has amodern, intuitive operator in-terface. With DIGSI 4, theSIPROTEC 4 units can be con-figured and queried - it is a tai-lored program for the energysupply and manufacturing software runs underWindows (Version 95 andhigher, as well as NT).Simple protection settingThe protection functions re-quired can be selected fromthe wide range provided(Fig. 7). This means that trans-parency in subsequent menusis newly introduced primarydisplay (settings are related tonominal values of the object tobe protected) permits stan-dardization of the setting val-ues. Pressing a button effectsconversion to secondary val-ues and loading into the pro-tection 4 matrixThe DIGSI 4 matrix allows theuser to see the overall view ofthe unit configuration at aglance. For example, you candisplay all the LEDs that havebinary inputs or show any indi-cation that are connected tothe relay. And with one click ofthe button connections can utilizing filter functions, onlyallocated information is ren-dered visible. In addition, it ispossible to alter the viewingmodes. In Binary Output viewing mode (output relays),the tripping matrix is 4 7UM611/612Multifunction Generator Protection Relay6Siemens SIP 2000DIGSI 4 Operating programFigure 6DIGSI 4, main menueFigure 8DIGSI 4, allocation matrixFigure 7DIGSI 4, some protection : Reduced time and plan-ning for programming logicWith the help of the CFC (Con-tinuous Function Chart), youcan configure interlocks andswitching sequences simplyby drawing the logic se-quences; no special knowl-edge of software is elements, such asAND, OR and time elements,measured limit values, etc. attention has beenpaid to commissioning. All bi-nary inputs and outputs can beread and set directly. This cansimplify the wire checking pro-cess significantly for the primary testing, it is possi-ble to activate a transmissionlockout to prevent any infor-mation being transmitted viathe interface to the controlroom. On the other hand, indi-cations can be transmitted in-tentionally for test 4: Universal programfor fault recording evalua-tionFault recordings stored in theprotection system can be visu-ally displayed and evaluated inclear form. It is readily possibleto calculate harmonics, to viewindividual measuring points, todisplay vector and locus dia-grams Comtrade format makes itpossible to analyze any desiredfault recordings.~The new DIGSI 4nEasy to learnnClear layout of routing matrixnSubstation, feeder and equipmentdata managementnPassword protectionnLinked with the SICAM/SIMATICsoftware environmentnWindows standards}Siemens SIP 20007Figure 9CFC logic with module libraryFigure 10Fault respect to communica-tion, particular emphasisplaced on high levels of flexibil-ity, data integrity and utilizationof standards common in en-ergy automation. The designof the communication mod-ules permits interchangeabilityon the one hand, and on theother hand provides opennessfor future standards (for exam-ple, Industrial Ethernet).Local PC interfaceThe PC interface accessiblefrom the front of the unit per-mits quick access to all param-eters and fault event data. Ofparticular advantage is the useof the DIGSI 4 operating pro-gram during interfacesOn the rear of the unit are lo-cated two communicationmodules which incorporate op-tional equipment comple-ments and readily permit retro-fitting. They assure the abilityto comply with the require-ments of different communi-cation interfaces (electrical oroptical) and protocols(IEC 60870, PROFIBUS,DIGSI).The interfaces make provisionfor the following applications: Service interfaceIn the RS485 Version, sev-eral protection units can becentrally operated withDIGSI4. On connection of amodem, remote control ispossible. This provides ad-vantages in fault clearance,in particular in unmannedpower stations. System interfaceThis is used to carry outcommunication with a con-trol or protection and controlsystem and supports, de-pendent on the module con-nected, a variety of commu-nication protocols and inter-face 60870-5-103IEC 60870-5-103 is an interna-tionally standardized protocolfor the efficient solving ofcommunication problems inthe protected 60870-5-103 is supportedby a number of protection unitmanufacturers and is generator protection func-tions are stored in the privatepart (published) of the is an internationallystandardized communicationsystem (EN 50170) for com-munication problem is supported interna-tionally by several hundredmanufacturers and has to datebeen used in more than1,000,000 applications all overthe the Profibus-DP the pro-tection can be directly con-nected to a SIMATIC S5 transferred data are faultdata, measured values and in-formation from or to the logic(CFC).MODBUS RTUMODBUS is also a widely uti-lized communication standardand is used in numerous auto-mation bus architecturenRS485 busWith this data transmissionvia copper conductors elec-tromagnetic fault influ-ences are largely elimi-nated by the use oftwisted-pair failure of a unit, theremaining system contin-ues to operate without double ringcircuitThe fiber-optic double ringcircuit is immune to electro-magnetic failure of a sectionbetween two units, thecommunication systemcontinues to operate with-out 4 7UM611/612Multifunction Generator Protection RelayFigure 13PROFIBUS: RS485 copper conductorsOLM1)Figure 12PROFIBUS: Optical double ring circuit8Siemens SIP 2000CommunicationFigure 11IEC 60870-5-103 star-type RS232 copper conductorconnection or fibre-optic connection1)OpticalLinkModuleSystem solutionSIPROTEC 4 is tailor-made foruse in SIMATIC-based auto-mation the PROFIBUS DP, indica-tions (pickup and tripping) andall relevant operational mea-sured values are transmittedfrom the protection modem and service inter-face, the protection engineerhas access to the protectiondevices at all times. This per-mits remote maintenance anddiagnosis (cyclic testing).Parallel to this, local communi-cation is possible, for exampleduring a major SIP 20009Figure 14Communication module, opticalFigure 15Communication module RS232, RS485Figure 16Communication module, optical, 17System solution: CommunicationsDefinite time-overcurrentprotectionI>,I>>(ANSI 50, 51, 67)This protection function com-prises the short-circuit protec-tion for the generator and alsothe back-up protection for up-stream devices such as trans-formers or power system undervoltage stage atI>maintains the pickup whenduring the fault the currentfalls below the threshold. Inthe case of a voltage drop onthe generator terminals, thestatic excitation system can nolonger be sufficiently is one reason for the de-creasing of the >> stage can be imple-mented as high-set instanta-neous trip stage. With the inte-grated directional function itcan be applied for generatorswithout star point (see Fig-ure 18).Inverse time-overcurrentprotection (ANSI 51V)This function also comprisesshort-circuit and back-up pro-tection and is used for powersystem protection with currentdependent protection and ANSI characteristicscan be selected (Table 2).By evaluating the generatorterminal voltage, the currentfunction can be controlled version re-leases the sensitive set cur-rent the restraint versionthe pickup value of the currentis lowered linearly with de-creasing fuse-failure-monitor pre-vents unwanted overload protection(ANSI 49)The task of the overload pro-tection is to protect the statorwindings from high, continu-ous overload currents. All loadvariations are evaluated by themathematical model used. Thethermal effect of the rms cur-rent value forms the basis ofthe calculation. This conformsto IEC 60255-8. In dependencyof the current the cooling timeconstant is automatically ex-tended. If the ambient temper-ature or the temperature of thecoolant are injected via thePROFIBUS-DP, the model au-tomatically adapts to theambient conditions; otherwisea constant ambient tempera-ture is sequenceprotection(ANSI 46)Asymmetrical current loads inthe three phases of a genera-tor cause a temperature rise inthe rotor because of the nega-tive sequence field protection detects anasymmetrical load in three-phase machines. It functionson the basis of symmetricalcomponents and evaluates thenegative sequence of thephase currents. The thermalprocesses are taken into ac-count in the algorithm andform the inverse addition, the negativesequence is evaluated by anindependent stages (alarm andtrip) which are supplementedby a time-delay element (seeFigure 19).SIPROTEC 4 7UM611/612Multifunction Generator Protection Relay10Siemens SIP 2000FunctionsFigure 18Protection with current transformer on terminal sideFigure 19Characteristic of negative sequence protectionIEC-characteristicNormal inversetT= 0141002.,IIppVery inversetT= 13 inversetT= 8012IIppANSI-characteristicInversetD= + 8 934110 179662 inversetD= + 0 010310 inversetD= + 392210 inversetD= + 56410 inversetD= + 0 479710 213591 2Inverse-timecharacteristics(IP- Pickup value;TP,D- Time dial)Underexcitation protection(ANSI 40)Derived from the generatorterminal voltage and current,the complex admittance is cal-culated and corresponds to thegenerator diagram scaled inper unit. This protection pre-vents damage due to loss ofsynchronism resulting fromunderexcitation. The protec-tion function provides threecharacteristics for monitoringstatic and dynamic stability. Incase of exciter failure, fast re-sponse of the protection canbe ensured via binary input releases a timerwith a short time straight-line characteristicsallow an optimum adaption ofthe protection of the generatordiagram (see Figure 20). Theper-unit-presentation of the di-agram allows direct read-out ofthe setting positive sequence sys-tems of current and voltageare used to calculate theadmittance. This ensures thatthe protection always operatescorrectly even with asymmet-rical network the case of a voltage devia-tion from the rated voltage, theadmittance calculation has theadvantage that the characteris-tics move in the same direc-tion as the generator power protection(ANSI 32R)The reverse power protectionmonitors the direction of ac-tive power flow and respondswhen the mechanical energyfails because then the driveenergy is taken from the net-work. This function providedby the 7UM6 can be used foroperational shutdown of thegenerator but also preventsdamage to the steam reverse power is calcu-lated from the positive-sequence systems of currentand voltage. Asymmetricalnetwork faults therefore donot cause reduced measuringaccuracy. The position of theemergency trip valve is in-jected as binary informationand is used to switch betweentwo switch-off command de-lays. When applied for motorprotection, the sign of the ac-tive power can be reversed power protection(ANSI 32F)Monitoring of the active powerproduced by a generator canbe useful for starting up andshutting down stage monitors thresholdbeyond one limit value whileanother stage monitorsthreshold below another limitvalue. The power is calculatedusing the positive-sequencecomponent of current and protection(ANSI 21)This fast short-circuit protec-tion protects the generator,the generator transformer andis a backup protection for thepower system. This protectionhas two settable impedancestages; in addition, the firststage can be switched over viabinary input. With the circuit-breaker in open position(see Figure 21) the impedancemeasuring range can be ex-tended. The overcurrentpickup element with under-voltage seal-in ensures a reli-able pickup and the loop selec-tion logic a reliable detection ofthe faulty loop. It makes alsopossible a correct measuringvia the generator protection(ANSI 27)The undervoltage protectionevaluates the positive-se-quence components of thevoltages and compares themwith the threshold are two stages availableThe undervoltage function isused for asynchronous motorsand pumped-storage stationsand prevents the volt-age-related instability of function can also be usedfor monitoring SIP 200011Figure 20Characteristic of underexitation protectionFigure 21Grading of impedance protectionOvervoltage protection(ANSI 59)This protection prevents insu-lation faults that result whenthe voltage is too the maximumline-to-line voltages or thephase-to-earth voltages (forlow-voltage generators) can beevaluated. The measuring re-sults of the line-to-line voltagesare independent of the neutralpoint displacement caused byearth-faults. This function isimplemented in two protection(ANSI 81)The frequency protection pre-vents an unpermissible stressof the equipment ( turbine)in case of under- or over-frequency. It also serves as anmonitoring and control function has four stages ;the stages can be imple-mented either as under-frequency or over-frequencyprotection. Each stage can bedelayed in the case of voltagedistortion, the frequency mea-suring algorithm reliably identi-fies the fundamental wavesand determines the frequencyextremely measurement canbe blocked by using an un-dervoltage protectionVolt/Herz(ANSI 24)The overexcitation protectionserves for detection of anunpermissible high induction(proportional to V /f) in genera-tors or transformers, whichleads to a thermal may occur when startingup, shutting down under fullload, with weak systems orunder isolated operation. Theinverse characteristic can beset via seven points derivedfrom the addition, an independentalarm stage and aninstantaneous stage can calculation of the V /f ratio,frequency and also the highestof the three line-to-line volt-ages are used. The frequencyrange that can be monitoredcomprises 11 to 69 earth-fault protection,non-directional, directional(ANSI 59N, 64G, 67G)Earth faults manifest them-selves in generators that areoperated in isolation by theocurance of a displacementvoltage. In case of unit connec-tions, the displacement volt-age is an adequate, selectivecriterion for the selective earth-faultdetection, the direction of theflowing earth-current has to beevaluated too, if there is adirect connection betweengenerator and protection relay measuresthe displacement voltage at located at the transformerstar point or at the brokendelta-winding of a As anoption it is also possible to cal-culate the zero-sequence volt-age from the phase-to-earthvoltages. Depending on theload resistor selection 90 to95 % of the stator winding of agenerator can be sensitive current input isavailable for the earth currentmeasurement. This inputshould be connected to acore-balance current trans-former. The fault direction isdeduced from the displace-ment voltage and earth cur-rent. The directional character-istic (straight line) can be easilyadapted to the system condi-tions. Effective protection fordirect connection of a genera-tor to a busbar can thereforebe created. During startup, it ispossible to switch over fromthe directional to thedisplacement voltage mea-surement via an externally in-jected on the protectionsetting, various earth fault pro-tection concepts can be imple-mented with this function (seeFigs. 23 to 27).Sensitive earth-faultprotection(ANSI 50/51GN, 64R)The sensitive earth current in-put can also be used as sepa-rate earth-fault protection. It isof two-stage form. Secondaryearth currents of 2 mA orhigher can be reliably , this input is alsosuitable as rotor earth faultprotection. A voltage withrated frequency (50 or 60 Hz)is connected in the rotor circuitvia the interface unit 7XR61. Ifa higher earth current is flow-ing, a rotor earth fault has oc-curred. Measuring circuit mon-itoring is provided for this ap-plication (see Figure 26).100%-stator earth-fault pro-tection with 3rdharmonic(ANSI 59TN, 27TN (3rdH.))Owing to the design, the gen-erator produces a 3rd har-monic that forms a zero sys-tem. It is verifiable by the pro-tection on a broken delta wind-ing or on the neutral trans-former. The magnitude of thevoltage amplitude depends onthe generator and its the event of an earth fault inthe vicinity of the neutral pointthere is a voltage displace-ment in the 3rd harmonic(dropping in the neutral pointand rising at the terminals).Depending on the connectionthe protection must be set ineither undervoltage orovervoltage form. It can alsobe delayed. So as to avoidoverfunction, the active powerand the positive sequencevoltage act as enabling criteriaThe final protection setting canbe made only by way of a pri-mary test with the failure protection(ANSI 50BF)In the event of scheduleddowntimes or a fault in thegenerator, the generator canremain on line if the circuit-breaker is defective and couldsuffer substantial failure protection eval-uates a minimum current andthe circuit-breaker auxiliarycontact. It can be started by in-ternal protective tripping or ex-ternally via binary activation avoidsoverfunction (see Figure 22).SIPROTEC 4 7UM611/612Multifunction Generator Protection Relay12Siemens SIP 2000FunctionsFigure 22Logic diagram of breaker failure protectionInadvertent energizationprotection(ANSI 50, 27)This protection has the func-tion of limiting the damage ofthe generator in the case of anunintentional switch-on of thecircuit-breaker whether thegenerator is standing still or ro-tating without being excited orsynchronized. If the networkvoltage is connected the gen-erator starts as an asynchron-ous machine with a large slipand this leads to excessivelyhigh currents in the logic circuit consisting ofsensitive current measure-ment for each phase, mea-sured variable detector, timecontrol and blocking as of aminimum voltage, leads to aninstantaneous trip the fuse failure monitor re-sponds, this function is trip couplingFor recording and processingof external trip informationthere are 2 (for 7UM611) or4 (for 7UM612) binary are provided for informa-tion from the Buchholz relay orgenerator-specific commandsand act like a protective func-tion. Each inputs opens a faultevent and can be individuallydelayed by means of a circuit supervision(ANSI 74TC)One or two binary inputs canbe used for monitoring the cir-cuit-breaker trip coil includingits incoming cables. An alarmsignal occurs whenever the cir-cuit is rotation reversalIn pumped-storage power sta-tions it is possible for a binaryinput to perform matching tothe current phase rotation(generator / motor operationvia phase rotation reversal).2 predefinable parametergroupsIn the protection the settingvalues can be stored in twodatasets. In addition to thestandard parameter group, thesecond group is provided forcertain operating conditions(pumped-storage power sta-tions). It can be activated viabinary input, local control orDIGSI (ANSI 86)All binary outputs (alarm or triprelays) can be stored like LEDsand reset using the LED resetkey. The lockout state is alsostored in the event of supplyvoltage failure. Reclosure canonly occur after the lockoutstate is failure and other moni-toringThe relay comprises high-per-formance monitoring for thehardware and measuring circuits, ana-log-digital conversion, powersupply voltages, memoriesand software sequence(watchdog) are all fuse failure function de-tects failure of the measuringvoltage due to short-circuit oropen circuit of the wiring or avoids overfunction of theundervoltage elements in theprotection positive and nega-tive-sequence system (voltageand current) are timeAll binary indications can besubjected to a filter time (indi-cation suppression).Siemens SIP 200013Direct generator-busconnectionFig. 23 illustrates the recom-mended standard connectionif several generators supplyone busbar. Phase-to-earthfaults are disconnected by em-ploying the directionalearth-fault criterion. Theearth-fault current is driventhrough the cables of the sys-tem. If this is not sufficient, anearthing transformer con-nected to the busbar suppliesthe necessary current (maxi-mum approximately 10 A) andpermits a protection range ofup to 90 %. The earth-faultcurrent should be detected bymeans of core-balance currenttransformers in order toachieve the necessary sensi-tivity. The displacement volt-age can be used as earth-faultcriterion during starting opera-tions until synchronization generator-bus con-nection with low-resistanceearthingIf the generator neutral pointhas low-resistance earthing,the connection illustrated inFig. 24 is recommended. Inthe case of several generators,the resistance must be con-nected to only one generator,in order to prevent circulatingcurrents (3rd harmonic).For selective earth-fault detec-tion, the earth-current inputshould be looped into the com-mon return conductor of thetwo current transformer sets(differential connection). Thecurrent transformers must beearthed at only one point. Thedisplacement voltage VEis uti-lized as additional enable DE current trans-formers are desirable with thisform of connection. In thecase of higher generatorpower (for example, INapproxi-mately 2000 A), current trans-formers with a secondarynominal current of 5 A are 4 7UM611/612Multifunction Generator Protection Relay14Siemens SIP 2000Connections/Typical applicationsFigure 24Figure 23Direct generator-bus con-nection with high-resistancegenerator neutral earthingWith this system configura-tion, selective earth-fault de-tection is implemented on thebasis of the lower fault cur-rents through the differentialconnection of core-balancecurrent transformers (seeFigure 25). Secondary-sideearthing must be effected atonly one core-balance currenttransformer. The displacementvoltage is to be utilized addi-tionally as enable load resistor takes theform either of primary or ofsecondary resistor with neutraltransformer. In the case ofseveral generators connectedto the busbar, again only onegenerator will be earthed viathe connection with iso-lated star pointThis configuration of unit con-nection is a variant to be rec-ommended (see Figure 26).Earth-fault detection is ef-fected by means of the dis-placement voltage. In order toprevent unwanted operation inthe event of earth faults in thesystem, a load resistor mustbe provided at the broken deltawinding. Depending on theplant, a voltage transformerwith a high power (VA) may infact be sufficient. If not, anearthing transformer should beemployed. The available mea-suring winding can be used forthe purpose of voltage earth-fault protectioncan be implemented with theunassigned earth-fault currentinput. The 7XR61 coupling unitmust be used for this SIP 200015Figure 26Figure 25Unit connection with neutraltransformerWith this system configura-tion, disturbance voltage re-duction and damping in theevent of earth faults in thegenerator area are effected bya load resistor connected togenerator neutral point. Themaximum earth-fault current islimited to approximately 10 can take theform of a primary or secondaryresistor with neutral trans-former. In order to avoid lowsecondary resistance, thetransformation ratio of theneutral transformer should below. The higher secondaryvoltage can be reduced bymeans of a voltage , the circuit is identi-cal to the above configuration(Figure 26).Connection withlow-voltage generatorsAs is generally known, thelow-voltage system is solidlyearthed, so that the generatorneutral point is connected toearth (see Figure 28). With thisconfiguration, there is the riskthat, as a result of the 3rd har-monics forming a zerophase-sequence system, cir-culating currents will flow viathe N-conductor. This must belimited by the generator or sys-tem configuration (reactor).Otherwise, connection corre-sponds to the customary stan-dard. In the case of residualcurrent transformer design, itis to be ensured that the ther-mal current limit (1s) of theIEEinput is restricted to 300 4 7UM611/612Multifunction Generator Protection Relay16Siemens SIP 2000Connections/Typical applicationFigure 28Figure 27Voltage transformer inopen delta connection(V-connection)Protection can also be readilyimplemented on voltage trans-formers in open delta-connec-tion. Fig. 29 shows the con-nection involved. If necessary,the operational measured val-ues for the phase-to-earth volt-ages can be slightly asymmet-rical. If this is undesirable, theneutral point (R16) can be con-nected to earth via a the case of open delta-con-nection, it is not possible tocalculate the displacementvoltage from the secondaryvoltages. It must be passed tothe protection device along adifferent path (for example,voltage transformer at the gen-erator neutral point or from theearthing transformer).Connection with two cur-rent transformersThis configuration is to befound in older systems with in-sulated or high-resistance starpoint. This connection is illus-trated in Fig. 30 opposite. Inthe protection unit, the sec-ondary currents are repre-sented correctly and, in addi-tion, the positive and the nega-tive phase-sequence systemare correctly calculated. Limitsof application occur in the caseof low-resistance and SIP 200017Figure 30Figure 29SIPROTEC 4 7UM611/612Multifunction Generator Protection RelayHardwareAnalog inputRated frequencyRated currentINEarth current, sensitiveIEmaxRated voltage VNPower consumptionwithIN=1AwithIN=5Afor sensitive earth currentvoltage inputs (with 100 V)Capability in CT circuitsthermal (rms values)dynamic (peak)Earth current, sensitivedynamic (peak)Capability in voltage paths50 or 60 A100 to 125 Vapprox. VAapprox. VAapprox. VAapprox. VA100INfor1s30INfor 10 s4INcontinuous250IN(one half cycle)300Afor1s100 A for 10 s15 A continuous750 A (one half cycle)230 V continuousPower supplyRated auxiliary voltagePermitted toleranceSuperimposed (peak to peak)Power consumptionduring normal operation7UM6117UM612during pickup with all inputs and outputs activated7UM6117UM612Bridging time during auxiliary voltage failureat Vaux=48VandVaux 110 Vat Vaux=24VandVaux=60V24 to 48 V DC60 to 125 V DC110 to 250 V DCand 115 V AC with 50/60 Hz 20 to +20 % 15 %approx. 4 Wapprox. Wapprox. Wapprox. W 50 ms 20 msBinary inputsNumber7UM6117UM6122 pickup thresholdsRange is selectable with jumpersMaximum permissible voltageCurrent consumption, energized71514to19VDCor66to88VDC300VDCap prox. mAOutput relaysNumber7UM6117UM612Switching capacitymakebreakbreak (for resistive load)break (for L/R 50 ms)Switching voltagePermissible current11 (1 NO))16 (1 NO); 1 (1 NC)1000W/VA30 VA40 W25 VA250 V5 A continuous30 A for secondsLEDNumberRUN (green)ERROR (red)Assignable LED (red)7UM6117UM61211714Mechanical construction7XP20 housingDegree of protection acc. to EN 60529For surface-mounting housingFor flush-mounting housingfrontrearFor the terminalsWeightFlush mounting housing7UM611 (1/3 x 19 )7UM612 (1/2 x 19 l)Surface mounting housing7UM611 (1/3 x 19 )7UM612 (1/2 x 19 )For dimensions see dimension drawingsIP 51IP 51IP 50IP 2x with terminal cover put onapprox. kgapprox. 7 kgapprox. kgapprox. 12 kg18Siemens SIP 2000Technical dataSerial interfacesOperating interfacefor DIGSI 4ConnectionBaud rateNon-isolated, RS232,front panel; 9-pin subminiature connector4800 to 115200 BaudTime synchronizationIRIG B / DCF 77 signalConnectionVoltage levels9-pin subminiature connector, terminal withsurface-mounting caseselectable5Vor12Vor24VService/modemi nterface for DIGSI 4 /Modem / ServiceIsolated RS232/RS485Test voltageDistance for RS232Distance for RS485Fiber-optic cableOptical wavelengthPermissible path attenuationBridgeable distance9-pin subminiature connector500V/50HzMax. 15 mMax. 1000 mIntegrated ST-connector = 820 nmMax. 8 dB for glass-fiber mMax. kmSystem interfaceIEC 60870-5-103PROFIBUS DPMODBUS RTUIsolated RS232/RS485Baud rateTest voltagePermissible distance for RS232Permissible distance for RS485PROFIBUS RS485Test voltageBaud ratePermissible distancePROFIBUS fiber-optic cableBaud rateOptical wavelengthPermissible path attenuationBridgeable distance9-pin subminiature connector4800 to 115200 Baud500V/50HzMax. 15 mMax. 1000 m500V/50HzMax. 12 MBaud1000 m bei 93,75 kBaud; 100 m bei 12 MBaudIntegrated ST-connector;Single or double ringmax. MBaud = 820 nmMax. 8 dB for glass-fiber mmax. kmElectrical testsSpecificationsStandardsIEC 60255 (product standards)ANSI/IEEE 508DIN 57435 part 303For further standards see Individual functions Insulating testsStandardsVoltage test (100 % test)All circuits except for auxiliary supply, binary inputscommunication and time synchronization interfacesVoltage test (100 % test)Auxiliary voltage and binary inputsVoltage test (100 % test)RS485/RS232 rear side communication interfacesand time synchronization interfaceSurge voltage test (type test)All circuits except for communication interfacesand time synchronization interface, class IIIIEC kV (rms.), 50/60 kV DC500 V (rms value), 50/60 Hz5 kV (peak); s; J;3 positive and 3 negative surgesat intervals of 5 sEMC tests for noise immunity(type test)StandardsHigh frequency testIEC 60255-22-1, class IIIand DIN 57435 part 303, class IIIDischarge of static electricityIEC 60255-22-2 class IVEN 61000-4-2, class IVExposure to RF field, non-modulatedIEC 60255-22-3 (report), class IIIExposure to RF field, amplitude-modulatedIEC 61000-4-3, class IIIExposure to RF field, pulse-modulatedIEC 61000-4-3/ ENV 50204, class IIIFast transient interference burstsIEC 60255-22-4, IEC 61000-4-4, class IVIEC 60255-6, IEC 60255-22 (product standards)EN 50082-2 (generic standard)DIN 57 435 part kV (peak value), 1 MHz; =15ms400 pulses per s; duration 2 s8 kV contact discharge; 15 kV air discharge;both polarities; 150 pF; Ri= 330 10 V/m; 27 to 500 MHz10 V/m; 80 to 1000 MHz; 80 % AM; 1 kHz10 V/m; 900 MHz; repetition frequency 200 Hz;duty cycle 50 %4 kV; 5/50 ns; 5 kHz; burst length = 15 ms;repetition frequency 300 ms; both polarities;Ri=50 ; test duration 1 minSiemens SIP 200019SIPROTEC 4 7UM611/612Multifunction Generator Protection RelayEMC tests for noise immunity(type tests)High-energy surge voltages (SURGE),IEC 61000-4-5 installation class IIIAuxiliary supplyMeasurement inputs, binary inputsand relay outputsConducted RF, amplitude-modulatedIEC 61000-4-6, class IIIMagnetic field with power frequencyIEC 61000-4-8, class IV;IEC 60255-6Oscillatory surge withstand capabilityANSI/IEEE transient surge withstand capabilityANSI/IEEE electromagnetic interferenceANSI/IEEE oscillationsIEC 60894, IEC 61000-4-12Impulse: scommon (longitudinal) mode: 2 kV; 12 ,9 Fdifferential (transversal) mode:1 kV; 2 ,18 Fcommon (longitudinal) mode: 2 kV; 42 , Fdifferential (transversal) mode: 1 kV; 42 , F10 V; 150 kHz bis 80 MHz; 80 % AM; 1 kHz30 A/m continuous;300 A/m for 3 s; 50 mT; 50 to 3 kV (peak); 1 to MHzdamped wave; 50 surges per second;Duration 2 s; Ri= 150 to 200 4 to 5 kV; 10/150 ns; 50 impulses per second;both polarities; Duration2s;Ri=80 35 V/m; 25 to 1000 kV (peak value), polarity alternating 100 kHz,1 MHz, 10 and 50 MHz, Ri= 200 EMC tests for interferenceemission(type tests)StandardRadio interference voltage on linesonly auxiliary supply IEC-CISPR 22Interference field strengthIEC-CISPR 22EN 50081-1 (Basic specification)150 kHz to 30 MHzclass B30 to 1000 MHzclass BMechanical dynamic testsVibration and shock stressat stationary conditionsStandardsVibrationIEC 60255-21-1, class 2IEC 60068-2-6ShockIEC 60255-21-2, class 1IEC 60068-2-27Vibration during earthquakeIEC 60255-21-2, class 1IEC 60068-3-3IEC 60255-21 and IEC 60068Sinusoidal10 to 60 Hz: mm amplitude;60 to 150 Hz: 1 g accelerationFrequency sweep 1 octave/min20 cycles in 3 orthogonal axesHalf-sinusoidalAcceleration 5 g, duration 11 ms,3 shocks each in both directions of the 3 axesSinusoidal1 to 8 Hz: mm amplitude (horizontal axis)1 to 8 Hz: mm amplitude (vertical axis)8 to 35 Hz: 1 g acceleration (horizontal axis)8 to 35 Hz: 0,5 g acceleration (vertical axis)Frequency sweep 1 octave/min1 cycle in 3 orthogonal axesduring transportStandardsVibrationIEC 60255-21-1, class 2IEC 60068-2-6ShockIEC 60255-21-2, class 1IEC 60068-2-27Continuous shockIEC 60255-21-2, class 1IEC 60068-2-29IEC 60255-21 and IEC 60068-2Sinusoidal5 to 8 Hz: 7,5 mm amplitude;8 to 150 Hz: 2 g accelerationFrequency sweep 1 octave/min20 cycles in 3 orthogonal axesHalf-sinusoidalAcceleration 15 g, duration 11 ms, 3 shockseach in both directions 3 axesHalf-sinusoidalAcceleration 10 g, duration 16 ms,1000 shocks in both directions of the 3 axes20Siemens SIP 2000Technical dataClimatic stressTemperaturesStandardsRecommended temperature during operationTemporary permissible temperature limit duringoperationLimit temperature during storageLimit temperature during transportStorage and transport with standardfactory packagingIEC 60255-6 5 to +55 C25 to 131 F 20 to +70 C-4 to 158 F(The legibility of the display may be affectedabove 55 C/131 F) 25 to +55 C-13 to 131 F 25 to +70 C-13 to 158 FHumidityPermissible humidity stressWe recommend arranging the units in such a waythat they are not exposed to direct sunlight or pronouncedtemperature changes that could cause condensationAnnual average 75 % relative humidity; on 56days a year up to 93 % relative humidity; condensa-tion during operation is not permittedFunctionsCommonFrequency range11 to 69 HzDefinite time-overcurrentprotection, directionalANSI 50, 51, 67Setting rangesOvercurrentI>,I>>Time delay TUndervoltage seal-in V<Seal-in time of V<Angle of the directional element (atI>)TimesPickup timeI>,I>>at 2 times of set valueat 10 times of set valueDrop-off timeI>,I>>Drop-off ratioDrop-off ratio V<TolerancesCurrent pickup (starting)I>,I>>Undervoltage seal-in V<Angle of the directional elementTime to 8 A (steps A); 5 times atIN=5A0 to 60 s (steps s) or indefinite10 to 125 V (steps V) to 60 s (steps s) 90 to + 90 (steps 1 )approx. 35 msapprox. 25 msapprox. 50 msI>: ;I>>: to 0,99 (steps )approx. % of set value or 10/50 mA1 % of set value or V1 1%or10msInverse time-overcurrentprotectionANSI 51VSetting rangesPickup overcurrentIPTime multiplier IEC-characteristics TTime multiplier ANSI- characteristics DUndervoltage release V<Trip characteristicsIECANSIPickup thresholdDrop-off thresholdTolerancesPickup thresholdIPPickup threshold V<Time for 2 I/IP to 4 A (steps A); 5 times atIN= to s (steps 0,01 s) or to 15 (steps ) or indefinite10 to 125 V (steps V)Normal inverse; very inverse; extremely inverseInverse; moderately inverse; very inverse;extremely inverse; definite inverseapprox. % of set value 10/50 mA1 % of set value or V5 % of nominal value+1%current toleranceor 40 msStator overloadprotection, thermalANSI 49Setting rangesFactor k according to IEC 60255-8Time constantTime delay factor at stand stillAlarm overtemperature Alarm/ TripOvercurrent alarm stageIAlarmTemperature atINScaling temperature of cooling mediumReset time at emergency startDrop-off ratio / Trip / AlarrmI/IAlarmTolerancesregarding k xIPregarding trip to (steps )30 to 32000 s (steps 1 s)1 to 10 (steps )70 to 100 % related to the trip temperature(steps 1 %) to 4 A (steps A); 5 times atIN=5A40 to 200 C (steps 1 C)or 104 to 392 F (steps 1 F)40 to 300 C (steps 1 C)or 104 to 572 F (steps 1 F)20 to 150000 s (steps 1 s)Drop-off with Alarrnapprox. % or 10/50 mA; class 2 % according toIEC 60255-83 % or 1 s: class 3 %according to IEC 60255-8 forI/(kIN)> SIP 200021SIPROTEC 4 7UM611/612Multifunction Generator Protection RelayNegative sequence protectionANSI 46Setting rangesPermissible negative sequenceI2perm. /INDefinite time trip stageI2>>/INTime delays TAlarm;TI2>>Negative sequence factor KCooling down time TCoolingTimesPickup time (definite stage)Drop-off time (definite stage)Drop-off ratiosI2perm.;I2>>Drop-off ratio thermal stageTolerancesPickup valuesI2perm.;I2>>Time delaysThermal characteristicTime for 2 I2/I2perm. 203 to 30 % (steps 1 %)10 to 100 % (steps 1 %)0 to 60 s (steps s) or indefinite2 to 40 s (steps s)0 to 50000 s (steps 1 s)approx. 50 msapprox. 50 msapprox. at fall below % of set value or % negative sequence1%or10ms5 % of nominal value +1 % current toleranceor 600 msUnderexcitation protectionANSI 40Setting rangesConductance thresholds 1/xd characteristic(3 characteristics)Inclination angle 1, 2, 3Time delay TTimesStator criterion 1/xd characteristic; Undervoltage blockingDrop-off ratioStator criterion 1/xd characteristic; Undervoltage blockingTolerancesStator criterion 1/xd characteristicStator criterion Undervoltage blockingTime delays to (steps )50 to 120 (steps 1 )0 to 50 s (steps s) or indefiniteapprox. 60 msapprox. 50 msapprox. % of set value1 electrical1% protectionANSI 32Setting rangesReverse power PRev.>/SNTime delays TTimesPickup timeDrop-off timeDrop-off ratio PRev.>TolerancesReverse power PRev.>Time delays T to 30 % (steps %)0 to 60 s (steps s) or indefiniteapprox. 360 ms (50 Hz); approx. 300 ms (60 Hz)approx. 360 ms (50 Hz); approx. 300 ms (60 Hz)approx. % SN 3 % set value1%or10msForward-power protectionANSI 32FSetting rangesForward power PForw.</SNForward power PForw.>/SNTime delays TTimesPick-up time (accurate measuring)Pick-up time (fast measuring)Drop-off time (accurate measuring)Drop-off time (fast measuring)Drop-off ratio PForw.<Drop-off ratio PForw.>TolerancesActive power PForw.<, PForw.>Time delays to 120 % (steps %)1 to 120 % (steps %0 to 60 s (steps s) or indefiniteapprox. 360 ms (50 Hz); approx. 300 ms (60 Hz)approx. 60 ms (50 Hz); approx. 50 ms (60 Hz)approx. 360 ms (50 Hz); approx. 300 ms (60 Hz)approx. 60 ms (50 Hz); approx. 50 ms (60 Hz) or % of SNapprox. or 0,5 % of % SN 3%ofsetvalueat Q < SNat accurate % SN 3%ofsetvalueat Q < SNat fast measuring1%or10ms22Siemens SIP 2000Technical dataImpedance protectionANSI 21Setting rangesOvercurrent pickupI>Undervoltage seal-in V<Impedance Z1 (related toIN=1 A)Impedance Z1B (related toIN=1 A)Impedance Z2 (related toIN=1 A)Time delays TTimesShortest tripping timeDrop-off timeDrop-off ratioOvercurrent pickupI>Undervoltage seal-in V<TolerancesOvercurrent pickupI>Undervoltage seal-in V<Impedance measuring Z1, Z2Time delays to 4 A (steps A); 5 times atIN=5A10 to 125 V (steps ) to 130 (steps ) to 65 (steps ) to 65 (steps )0 to 60 s (steps s) or indefiniteapprox. 40 msapprox. 50 msapprox. % of set value. 10/50 mA1 % of set value. or V| Z/Z| 5 % for 30 K 90 1% or 10 msUndervoltage protectionANSI 27Setting rangeUndervoltage pickup V<, V<<(positive sequence as phase-to-phase values)Time delays TTimesPickup time V<, V<<Drop-off time V<, V<<Drop-off ratio V<, V<<TolerancesVoltage limit valuesTime delays T10 to 125 V (steps V)0 to 60 s (steps s) or indefiniteapprox. 50 msapprox. 50 to (steps )1 % of set value or V1%or10msOvervoltage protectionANSI 59Setting rangesOvervoltage pickup V>, V>>(maximum phase-to-phase voltage orphase-to-earth-voltage)Time delays TTimePickup times V>, V>>Drop-off times V>, V>>Drop-off ratio V>, V>>TolerancesVoltage limit valueTime delays T30 to 170 V (steps V)0 to 60 s (steps s) or indefiniteapprox. 50 msapprox. 50 to (steps )1 % of set value V1%or10msFrequency protectionANSI 81Setting rangesSteps; selectable f>, f<Pickup values f>, f<Time delays TUndervoltage blocking V1<TimesPickup times f>, f<Drop-off times f>, f<Drop-off difference fDrop-off ratio V1<TolerancesFrequencyUndervoltage blockingTime delays T440 to 65 Hz (steps Hz)0 to 60 s (steps s) or indefinite10 to 125 V (steps V)approx. 100 msapprox. 100 msapprox. 20 mHzapprox. mHz (at V> VN)1 % of set value or V1%or10msOverexcitation protection(Volt/Hertz)ANSI 24Setting rangesPickup threshold alarm stagePickup threshold V/f>>-stageTime delays TCharacteristic values of V/fand assigned times t(V/f )Cooling down time TCoolingTimes (Alarm and V/f>>-stage)Pickup times at of set valueDrop-off timesDrop-off ratio (alarm, trip)TolerancesV/f-PickupTime delays TThermal characteristic (time)1 to (steps )1 to (steps )0 to 60 s (steps s) or to 20000 s (steps 1s)0 to 20000 s (steps 1s)approx. 60 msapprox. 60 % of set value1%or10ms5 % rated to V/f or 600 msSiemens SIP 200023SIPROTEC 4 7UM611/612Multifunction Generator Protection RelayStator earth-faultprotection, non-directional,directionalANSI 59N, 64G, 67GSetting rangesDisplacement voltage V0>Earth current 3I0>Angle of direction elementTime delays TTimesPickup times V0>, 3I0>Drop-off times V0>/ 3I0>Drop-off ratio V0>, 3I0>Drop-off difference angleTolerancesDisplacement voltageEarth currentTime delays T5 to 125 V (steps V)2 to 1000 mA (steps 1 mA)0 to 360 (steps 1 )0 to 60 s (steps 0,01 s) or indefiniteapprox. 50 msapprox. 50 directed to power system1 % of set value or V1 % of set value or mA1%or10msSensitive earth-fault protectionANSI 50/51GN, 64RSetting rangesEarth current pickupIEE>,IEE>>Time delays TMeasuring circuit supervisionIEE<TimesPickup timesDrop-off timesMeasuring circuit supervisionDrop-off ratioIEE>,IEE>>Drop-off ratio measuring circuit supervisionIEE<TolerancesEarth current pickupTime delays T2 to 1000 mA (steps 1 mA)0 to 60 s (steps s) or to 50 mA (steps mA)approx. 50 msapprox. 50 msapprox. 50 or 1 mAapprox. or 1 mA1 % of set value or mA1%or10ms100 % Stator earth-faultprotection with 3rd harmonicsANSI 59TN, 27TN (3rd H.)Setting rangesDisplacement voltage V0 (3rd harm.)>, V0 (3rd harm.)<Time delay TActive power releasePositive sequence voltage releaseTimesPickup timeDrop-off timeDrop-off ratioUndervoltage stage V0 (3rd harm.)<Overvoltage stage V0 (3rd harm.)>Active power releasePositive sequence voltage releaseTolerancesDisplacement voltageTime delay to 40 V (steps V)0 to 60 s (steps s) or indefinite10 to 100 % (steps 1 %) or indefinite50 to 125 V (steps V) or indefiniteapprox. 80 msapprox. 80 msapprox. % of set value or V1%or10msBreaker-failure protectionANSI 50BFSetting rangesCurrent thresholdsI>BFTime delay BF-TTimePickup timeDrop-off timeTolerancesCurrent thresholdI>BF/INTime delay to 1 A (steps A) to 60 s (steps s) or indefiniteapprox. 50 msapprox. 50 ms1 % of set value or 10/50 mA1%or10msInadvertent energizingprotectionANSI 50, 27Setting rangesCurrent pickupI>>>Voltage release V1<Time delayDrop-off timeTimesReaction timeDrop-off timeDrop-off ratioI>>>Drop-off ratio V1<TolerancesCurrent pickupUndervoltage seal-in V1<Time delay to 20 A (steps A); 5 times atIN=5 A10 to 125 V (steps 1 V)0 to 60 s (steps s) or indefinite0 to 60 s (steps s) or indefiniteapprox. 25 msapprox. 35 msapprox. % of set value or 20/100 mA1 % of set value or V1%or10msExternal trip couplingNumber of external trip couplings2 for 7UM6114 for 7UM612Trip circuit supervisionANSI 74TCNumber of supervised trip circuits (only 7UM612)124Siemens SIP 2000Technical dataOperational measured valuesDescriptionCurrentsToleranceVoltagesToleranceImpedanceTolerancePowerTolerancePhase angleTolerancePower factorToleranceFrequencyToleranceOverexcitationToleranceThermal measurementTolerancePrimary; secondary or per unit (%)IPH1;IPH2;IPH3;IEE;I1; % of measured values or 10 mA 1 digitVPH1;VPH2;VPH3;VE;VPH12;VPH23;VPH31;V1; % of measured values or 0,2 V 1 digitR, X1%S; P ; Q1 % of measured values or % SN < cos ( )1% 1 digitf10 mHz at V> VN;40Hz<f<65Hz)V/f ;1% PH1; PH2, PH3, I2, V/f,5% memoryMemoryReset manualValuesPositive sequence voltagePositive sequence currentActive powerReactive powerFrequencyDisplacement voltage (3rd harmonics)Measured values with date and timevia binary inputvia key padvia communicationV1I1PQfVE(3rd harm.)Energy meteringMeter of 4 quadrantsToleranceWP+;WP ;WQ+;WQ 1%Fault recordsNumber of fault recordsInstantaneous valuesStorage timeSampling intervalChannelsRMS valuesStorage periodSampling intervalChannelsmax. 8 fault recordsmax. 5 sdepending on the actual frequency(e. g. ms at 50 Hz; ms at 60 Hz)vPH1,vPH2,vPH3,vE;iPH1,iPH2,iPH3,iEEm ax. 80 sfixed (20 ms at 50 Hz; ms at 60 Hz)V1,VE,I1,I2,IEE,P,Q, , f-fnAdditional functionsFault event loggingOperational indicationsElapsed-hour meterSwitching statisticsStorage of events of the last 8 faultsPuffer length 600Time solution 1 msmax. 200 indicationstime solution 1 msup to 6 digits(criterion: current threshold)Number of breaker operationPhase summated tripping currentCE conformityThe product meets the stipulations of the guideline of thecouncil of the European Communities for harmonization ofthe legal requirements of the member states on elec-tro-magnetic compatibility (EMC directive 89/336/EEC) andproduct use within certain voltage limits (low-voltagedirective 73,23/EEC).The product conforms with the international standard of theIEC 60255 series and the German national standardDIN VDE 57 435,Part 303. The unit has been developed andmanufactured for use in industrial areas in accordance withthe EMC conformity is the result of a test that wasperformed by Siemens AG in accordance with Arti-cle 10 of the directive in conformance with genericstandards EN 50081-2 and EN 50082-2 for theEMC directive and EN 60255-6 for the SIP 200025SIPROTEC 4 7UM611/612Multifunction Generator Protection Relay26Siemens SIP 2000DesignationOrder CodeSelection and ordering dataMultifunction generator protection SIPROTEC 47UM61 - - A0 Housing, binary inputs and binary outputsHousing 1/3 19", 7 BI, 11 BO, 1 live status contact1Housing 1/2 19", 15 BI, 19 BO, 1 live status contact2Current transformerIN1A15A5Auxiliary voltage(power supply, indication voltage)24 to 48 V DC, threshold binary input 17 V260 to 125 V DC, threshold binary input 17 V4110 to 220 V DC, 115 V AC, threshold binary input 73 V5ConstructionSurface-mounting housing 2 tier screw-type terminals top/bottomBFlush-mounting housing, plug-in terminals (2-/3 pin connector)DFlush-mounting housing, screw-type terminalE(direct connection, ring-type cable lugs)Region-specific default setting/function andlanguage settingsRegion DE, 50 Hz, IEC characteristics, language: German,(language can be adjusted)ARegion World, 50/60 Hz, IEC/ANSI characteristics, language: English,(language can be adjusted)BRegion US, 60 Hz, ANSI characteristics, language: American,(language can be adjusted)CSystem interface (rear of units)No system interface0IEC protocol, electric RS2321IEC protocol, electric RS4852IEC protocol, optical 820 nm, ST-connector3PROFIBUS-FMS slave, electric RS485, upon request4PROFIBUS-FMS slave, optical, double ring, ST-connector, upon request6PROFIBUS-DP slave, electric RS4859L0APROFIBUS-DP slave, optical 820 nm, double ring, ST-connector9L0BMODBUS, electric RS4851)9L0DMODBUS, optical 820 nm, ST-connector1)9L0EDIGSI 4/Modem interface (rear of unit)No interface0DIGSI 4, electric RS2321DIGSI 4, electric RS4852DIGSI 4, optical 820 nm, ST-connector3Measuring values, energy metering3Functions2)BasisAStandardBasis + Forward power, underexcitation, negative sequenceBand breaker-failure protectionFullStandard + inadvertent energization, stator earth-fault (3rd harmonic)Cand impedance protection1) Available as of next software ) For more detailled information on the functionssee Table 1 on page 2. Siemens SIP 34Short-circuit linkfor current contactsFig. 35Short-circuit linkfor voltage contacts/indications contactsFig. 322-pin connectorFig. 333-pin connectorFig. 31Mounting railfor 19" rackDescriptionOrder to 1 mm20-827039-10-827396-140001AMP1)AMP1)CI 2 1 to mm20-827040-10-827397-140001AMP1)AMP1)Ty pe III + to mm20-163083-70-163084-240001AMP1)AMP1)Cr impingtoolfor Typ III +and matching femalefor CI2and matching female0-539635-10-539668-20-734372-11-73 4387-111AMP1)AMP1)19"-mounting railC73165-A63-D200-11Siemens31Short-cir cuit linksfor current terminalsfor other terminalsC73334-A1-C33-1C73334-A1-C34-11 1SiemensSiemens3435Safety cover for terminalslargesmallC73334-A1-C31-1C73334 -A1-C32-111SiemensSiemensProduct descriptionVariantsOrder 4Software for configuration and operationof Siemens protection unitsMS Windows program, running underMS Windows (version MS Windows 95and higher).Unit templates, COMTRADE Viewer, electronicmanual includedBasisFull version with license for 10 computers, on CD-ROM(authorization with license number).Additional: CD-ROM with DIGSI 3DemoDemo version on CD-ROMProfessionalComplete version: Basis and all optional packageson CD-ROMAdditional: CD-ROM with DIGSI 37XS5400-0AA007XS5401-0AA007XS5402-0AA00 Connecting cable (copper)Coupling device forrotor earth-fault protectionSeries resistor forrotor earth-fault protectionVoltage devider (5:1, 5:2)Instruction manualAdvertising brochuresGermanEnglishbetween PC and relay(9-pin female connector to 9-pin male connector)7UM61; ) AMP Deutschland GmbHAmperestr. 7 11D-63225 LangenTel.: +49 6103 709-0Fax +49 6103 709-223SIPROTEC 4 7UM611/612Multifunction Generator Protection Relay28Siemens SIP 2000Connection diagramsacc. to IECFigure 367UM611 connection diagram (IEC standard)1) NC or NO with jumper(under development).Siemens SIP 200029Figure 377UM612 connection diagram (IEC standard)1) NC or NO with jumper(under development).SIPROTEC 4 7UM611/612Multifunction Generator Protection Relay30Siemens SIP 2000Connection ANSIFigure 387UM611 connection diagram (ANSI standard)1) NC or NO with jumper(under development).Siemens SIP 200031Figure 397UM612 connection diagram (ANSI standard)1) NC or NO with jumper(under development).SIPROTEC 4 7UM611/612Multifunction Generator Protection Relay32Siemens SIP 2000Dimension drawingsFigure 407UM611 in 1/3 flush-mountinghousing 7XP20 forflush-mounting /cubicle-mountingFigure 417UM611 in 1/3 surfacemounting housing 7XP20 forpanel surface mountingRS232-interfaceSide viewRear view 1Unit with screw-type terminalsRear view 2Unit with plug-in terminalsFOSUB-D-connectorMounting platePanel cutoutCutout 25 x 105(without paint)FO caseSide viewFront view(without FO case)Siemens SIP 200033RS232-interfaceSide viewRear view 1Unit with screw-type terminalsRear view 2Unit with plug-in terminalsFOSUB-D-connectorMounting platePanel cutoutFigure 427UM612 in 1/2 flushmounting housing 7XP20 formounting /cubicle-mountingFigure 437UM612 in 1/2 surfacemounting housing 7XP20 forpanel surface mountingSide viewFront view(without FO case)AppendixCatalog index of the Power Transmission and Distribution Group (Protection and Substation Control Systems Division)TitleDesignationOrder Protective RelayingNumerical Protection DevicesLSA and Evaluation Software for Numerical Protection DevicesLSA Selection GuideLSA 7SJ600 Overcurrent, Motor and Overload ProtectionLSA 7SJ601 Overcurrent ProtectionLSA Definite-Time Overcurrent Protection RelayLSA Numerical Overcurrent-Time Protection (Version V3)LSA Numerical Overcurrent-Time Protection (Version V3)LSA Numerical Feeder Protection (Version )LSA 7SJ531 Numerical Line and Motor Protection withControl FunctionLSA Multi-Function Protection RelayLSA 4 7SJ61/62/63 6MD63 Multifunction Protection Relayand Bay ControllerSIP 7SJ602 Numerical Overcurrent, Motor and OverloadProtection RelaySIP 7SA510 Distance Protection Relay (Version V3)LSA 7SA511 Distance Protection Relay (Version V3)LSA Line Protection Relay (Version V3)LSA Overhead Control-Line Protection Relay (Version V3)LSA Miniature Circuit-BreakerLSA Line Differential Protection with Two Pilot WiresLSA Line Differential Protection with Three Pilot WiresLSA Current Comparison Protection Relay (Version V3)for Overhead Lines and CablesLSA 7SD60 Numerical Current Differential Protection Relayfor Two Pilot-Wire LinkSIPROTEC Differential Protection Relay (Version V3)for Transformers, Generators and MotorsLSA 7SS50 Version Busbar/Circuit-BreakerFailure Protection Relay (Summation Current Transformer Version)SIPROTEC Current Transformers 4AM50, 4AM51, 4AM52and Isolating Transformers 7XR95LSA 7SS52 Distributed Numerical Busbar and Circuit-BreakerFailure Protection RelayLSA to Earth-Fault DetectionLSA Transient Earth-Fault RelayLSA Toroidal Current TransformerLSA Earth-Leakage MonitorLSA Motor ProtectionLSA to Generator ProtectionLSA Generator Protection Relay (Version V3)LSA Generator Protection Relay (Version V3)LSA Generator Protection Relay (Version V3)LSA Generator Protection Relay (Version V3)LSA 4 7UM611/612 Multifunction Generator Protection RelaySIP Tripping MatrixLSA Synchronizing UnitLSA Three-Phase Portable Test Set (Omicron CMC56)LSA Test SwitchLSA Numerical Circuit-Breaker Failure Protection RelayLSA Numerical Circuit-Breaker Failure Protection RelayLSA Numerical Auto-Reclose/Check-Synchronism RelayLSA Analog Output UnitLSA Analog Output UnitLSA Power Supply UnitLSA 7RW600 Numerical Voltage, Frequency andOverexcitation RelaySIP for Protection DevicesCentralized and Remote Control of Siemens Protection Relays (Overview)SIPROTEC 4 - Software for Configuration and Operation of SIPROTEC 4 unitsSIP 4 - Software for the Visualization and Analysis of Fault RecordsSIP and Analysis Software DIGSI V3LSA Mini Bay Unit for Energy Automation with SICAMSIPROTEC Protective RelayingStatic Analog Network Protection RelaysR Analog Machine Protection RelaysR Analog Ancillary Protection EquipmentR SIP 2000Catalog indexTitleDesignationOrder AutomationSubstation SICAM RTU SystemSICAM miniRTU 6MD202 SubRTUSICAM microRTU 6MD2030 SubstationSICAM SAS Substation Automation SystemSICAM Power Supply ModuleSICAM Digital Input Functional ModuleSICAM Analog Input Functional ModuleSICAM Analog Input Functional ModuleSICAM System for SICAM SAS: SICAM WinCCSICAM plusTOOLS Configuration SystemSICAM QualityFault and Digital Recorder SIMEAS RSR Fault Data Unit DAKONSR IntranetOSCOP P The Program for Power Quality RecordersSR System Quality Analysis OSCILLOSTORESR Q Quality RecorderSR P Power MeterSR T Transducers for Power VariablesSR Filter and Power Conditioner for DistributionNetworks SIPCON P/SSR Voltage Capacitors and Power Factor Correction Units SIPCON TSR Control and ProtectionInput/Output Unit 6MB522LSA Unit 6MB523LSA Substation Control Master Unit and7SW511/7SW512 Relay Data ConcentratorLSA Input/Output UnitsLSA Compact Control Master Unitand Relay Data ConcentratorLSA Bay Control UnitLSA Mini Bay Unit (MBU)LSA Station Control UnitLSA Compact Remote Terminal UnitLSA Minicompact Remote Terminal UnitLSA Minicompact Remote Terminal Unit forCable Shield CommunicationLSA SINAUT LSA COMPACT Remote Terminal UnitLSA Station Control UnitLSA in SINAUT LSA Substation Control and ProtectionLSA Indications in SINAUT LSA Substation Control and ProtectionLSA Values in SINAUT LSA Substation Control and ProtectionLSA in SINAUT LSA Substation Control and ProtectionLSA Control with Input/Output Units 6MB520/6MB521LSA Synchronization with Input/Output Units 6MB520/521LSA with Two Control Master UnitsLSA Functions in SINAUT LSA Substation Control and ProtectionLSA Management with the SINAUT LSA Substation Controland Protection SystemLSA - Testing and Diagnostics System for SINAUT LSALSA Control and ProtectionLSACONTROL - Control and MonitoringLSA - Process Information AnalysisLSA 678 Standard CubicleLSA SIP 200035Conditions of Sale and DeliveryExport RegulationsTrademarksSubject to theGeneral Conditions of Supplyand Deliveryfor Products and Services ofthe 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 illustrations are for refer-ence reserve the right to adjustthe prices and shall charge theprice applying on the date ofdeliveryIn accordance with presentprovisions of the GermanExport List and the USCommercial Control List,export licences are notrequired for the productslisted in this export licence mayhowever be required due tocountry-specific application andfinal destination of the are the export criteriastated in the delivery note andthe invoice regarding a possibleexport and reexport to change dimensions in this catalogare given in product designations usedare trademarks or productnames of Siemens AG or forTechnical contents:Dr. Hans-Joachim HerrmannSiemens AG, EV S V13, N rnbergGeneral editing:Claudia K hn-SutionoSiemens AG, EV BK T, ErlangenOrder No.: E50001-K4406-A111-A1-7600Printed in GermanyKGK 0700 36 En 101753 6101/D611136Siemens SIP No.: E50001-K4406-A111-A1-7600Published bySiemens AktiengesellschaftPower Transmission and Distribution GroupProtection and Substation Control Systems DivisionPostfach 48 0690026 N rnbergDEUTSCHLAND

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