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Signal diagramThe figure below schematically illustrates howthe start, trip, control and blocking signals canIL1I t , kIL2be configured to obtain the required protectionfunctions.SGR3 / 1SGR1 / 1SGR3 / 2SGR2 / 1SGR2 / 2SGR1 / 2IRFSGR3 / 3IL3SGB / 1I t SGR1 / 3SGF2 / 7SGR3 / 4SGR2 / 3SGR2 / 4SGR1 / 4SGB / 6TS11RESET PROGRAMSS1SGF2 / 8IoSGB / 3Io to DSIGNAL 1CSIGNAL 2BTRIPA(AR3)SGR3 / 5SGR1 / 5SGR3 / 6SGR2 / 5SGR2 / 6SGR1 / 6SGR3 / 7SGR1 / 7SGR3 / 8SGR2 / 7SGR2 / 8SGR1 / 8START 20.1.1sSS2to , koE(AR2)SGF1 / 41Io START 1F1SGB / 2BSIRFSS3(AR1)SGB / 7RESET PROGRAMTS211TRIPRESETSGB / 4SGB / 5SGB / 8REMOTE SETTINGSRELAY RESETREDUCED BLOCK DIAGRAMSPCJ 4D29SPTU R1Fig. 4. Signal diagram of the combined overcurrent and earth-fault relay type SPAJ 140 CThe functions of the blocking and start signalsare selected with the switches of switchgroupsSGF, SGB and SGR. The checksums of theswitchgroups, are found in the setting menu ofSignalabbreviationsIL1, IL2, IL3I0BSSS1SS2SS3TS1TS2BSAR1.3IRFSGFSGBSGRthe protection relay module. The functions ofthe different switches are explained in detail inthe user s manual of the protection relay module SPCJ 4D29.Energizing current of phase L1, L2 and L3Neutral current (Residual current)Blocking or control signalStart signal 1Start signal 2Start signal 3Operate signal 1 (Trip signal 1)Operate signal 2 (Trip signal 2)Blocking signalAuto-reclose start signals (not in use in relay SPAJ 140 C)Internal relay failureSwitchgroup for functionsSwitchgroup for blockingsSwitchgroup for relay configuration7

Operationindicators3I I2(I )I n 1A 5A (I o )I n 1A 5Af n 50Hz60HzI5L1IL2IL3I 0 IRFSPAJ 140 C80.265V – 18.80V –I /I nU auxRESETSTEPt [s]kSPCJ 4D29REGISTERS00 0123456789/I n/I nI L3 / I nIL1IL2I max (15min) /I nI o /I nt (I o )[ % ]t (I o )[ % ]t [s]00t (I )[ % ]t (I )[ % ]I / I nOPER.IND.123456789I 0 / I nI STARTt 0 [s ]I TRIPk0I STARTI TRIPt o [s]PROGRAMI o TRIPSGFI o STARTI o TRIPCBFPSGB0012A0074ATRIPSer.No.B) If the display is dark when one of the protection stages I , I , I0 or I0 operates, thefaulty phase or the neutral circuit is indicatedwith a yellow LED. If, for instance, the TRIPindicator glows red, and the indicators IL1and IL2 at the same time are lit, overcurrenthas occurred on phase L1 and L2.I o /I nI o STARTSGRRS 611 006 -A) The indicator TRIP is lit when one of theprotection stages operates. When the protection stage resets, the red indicator remains lit.SPCJ 4D29C) Besides being a code number at data presentation, the leftmost red digit in the displayserves as a visual operation indicator. Anoperation indicator is recognized by the factthat the red digit alone is switched on. Thefollowing table named OPERATION IND.on the relay front panel is a key to thefunction code numbers used.Indication Explanation123456789I STARTI TRIPI STARTI TRIPI0 STARTI0 TRIPI0 STARTI0 TRIPCBFP The low-set stage I of the overcurrent unit has started The low-set stage I of the overcurrent unit has operated The high-set stage I of the overcurrent unit has started The high-set stage I of the overcurrent unit has operated The low-set stage I0 of the earth-fault unit has started The low-set stage I0 of the earth-fault unit has operated The high-set stage I0 of the earth-fault unit has started The high-set stage I0 of the earth-fault unit has operated Circuit breaker failure protection has operatedD) The TRIP indications persist when the protection stage returns to normal. The indicator is reset by pushing the RESET/STEPpush-button.SGF2/1 1 manual reset of I start indicationSGF2/2 1 manual reset of I start indicationSGF2/3 1 manual reset of I0 start indicationSGF2/4 1 manual reset of I0 start indicationFurther, the indicators may be reset via theexternal control input 10-11 by applying acontrol voltage to the input, provided switchSGB/8 is in position 1.On delivery of the relay from the factory theswitches SGF2/1 4 are preset at 0.The basic protection relay functions are notdepending on the state of the operation indicators, reset or non-reset. The relay is permanentlyoperative.If a protection stage starts, but not operates,because the energizing quantity goes below theset start current before the operate time circuithas timed out, the start indicators are normallyautomatically switched off. However, by meansof the switches SGF2/1 4 the start indicationsmay be made persistant which means that theyare to be manually reset by pushing the RESET/STEP push-button. The persistent indicationsare obtained through the following switch settings.8E) Shortly after the internal self-supervisionsystem has detected a permanent relay faultthe red IRF indicator is switched on and theoutput relay of the self-supervision systemoperates. Further, in most fault situations anautodiagnostic fault code is shown in thedisplay. The fault code is composed of a redfigure 1 and a green code number whichindicates fault type. The fault code persistsuntil the STEP/RESET push-button ispressed. When a fault code appears on thedisplay, the code number should be recordedfor statistical and maintenance purposes.

Power supplyand output relaymoduleTo be able to operate the relay needs a securedauxiliary voltage supply. The power supplymodule forms the voltages required by the protection relay module and the auxiliary relays.The withdrawable power supply and outputrelay module is located behind the system frontpanel, which is fixed by means of four crossslotted screws. The power supply and outputrelay module contains the power supply unit, alloutput relays, the control circuits of the outputrelays and the electronic circuitry of the externalcontrol inputs.The power supply and output relay module canbe withdrawn after removing the system frontpanel. The primary side of the power supplymodule is protected with a fuse, F1, located onthe PCB of the module. The fuse size is 1 A(slow).The power supply unit is a pulse-width modulated (PWM) dc/dc converter with galvanicallyisolated primary and secondary sides. It formsthe dc secondary voltages required by the protection relay module; that is 24 V, 12 V and 8 V. The output voltages 12 V and 24 V arestabilized in the power supply module, while the 5 V logic voltage required by the protectionrelay module is stabilized in the protection relaymodule. 8V1 A slowUnstabilized logicsvoltage 12VUaux80.265 V ac & dc18.80 V dc-12V 24VOperation amplifiervoltageOutput relay coilvoltageFig. 5.Voltage levels of the power supply unitA green LED indicator Uaux on the system frontpanel is lit when the power supply module is inoperation. The supervision of the voltages supplying the electronics is located in the protection relay module. If a secondary voltage differstoo much from its rated value, a self-supervisionalarm will be generated. An alarm is also issuedwhen the power supply module is withdrawnfrom the relay case, or on loss of auxiliary supply.There are two versions of power supply andoutput relay modules available. For both types,the secondary sides and the relay configurationsare identical, but the input voltage ranges differ.Insulation test voltage between the primary andsecondary side and the protective earth2 kV, 50 Hz, 1 minRated power Pn5WVoltage ranges of the power supply modules:- SPTU 240 R1Uaux 80.265 V dc/ac- SPTU 48 R1Uaux 18.80 V dcThe SPTU 240 R1 module can be fed fromeither an ac source or a dc source. SPTU 48 R1is designed for dc supply only. The permittedauxiliary voltage range of the relay is marked onthe relay system front panel.9

Technical data(modified 2002-04)Energizing inputsRated current InThermal withstand capability- continuously- for 1 sDynamic current withstand, half-wave valueInput impedanceRated frequency fn, on request1A4A100 A250 A 100 mΩOutput contact ratingsTripping contactsTerminalsRated voltageContinuous carryMake and carry for 0.5 sMake and carry for 3.0 sBreaking capacity for dc, when the trip circuittime-constant L/R 40 ms, at 48/110/220 V dcSignalling contactsTerminalsRated voltageContinuous carryMake and carry for 0.5 sMake and carry for 3.0 sBreaking capacity for dc, when the signal circuittime-constant L/R 40 ms, at 48/110/220 V dcsignal circuit voltageExternal control inputsBlocking, remote reset or remote setting inputControl voltage levelControl current of activated inputPower supply and output relay moduleSupply and output relay module, type SPTU 240 R1Supply and output relay module, type SPTU 48 R1Power consumption under quiescent/operatingconditions105A20 A500 A1250 A 20 mΩ50 Hz or 60 Hz65-66, 74-75250 V dc/ac5A30 A15 A5 A/3 A/1 A70-71-72, 68-69, 77-78, 80-81250 V dc/ac5A10 A8A1 A/0.25 A/0.15 A10-1118.265 V dc or 80.265 V ac2 20 mA80.265 V dc/ac18.80 V dc 4 W/ 6 W

Overcurrent unit of SPCJ 4D29Low-set overcurrent stage I *Start current **- at definite time characteristic- at inverse time characteristic ***Time/current characteristic- definite time characteristic- operate time t - inverse definite minimum time (IDMT)characteristic as per IEC 60255-3 and BS 142- special type inverse characteristic- time multiplier kHigh-set overcurrent stage I *Start currentOperate time t Earth-fault unit of SPCJ 4D29Low-set earth-fault stage I0 *Start currentTime/current characteristic- definite time characteristic- operate time t0 - inverse definite minimum time (IDMT)characteristic as per IEC 60255-3 and BS 142- special type inverse characteristic- time multiplier k0High-set earth-fault stage I0 *Start currentOperate time t0 * Note!The operation of the low-set stage based oninverse time characteristic will be blocked1) bystarting of the high-set stage. Then the operatetime of the low-set stage is determined by the setoperate time of the high-set stage at heavy faultcurrents. In order to obtain a trip signal, thehigh-set stage must be routed to a trip outputrelay.1)From program version 183 B and later thisfunction can be switched off with switch 2 of theextended switchgroup, SGX. By default thisfunction is switched off.0.5.5.0 x In0.5 2.5 x In0.05.300 sExtremely inverseVery inverseNormal inverseLong-time inverseRI-type inverseRXIDG-type inverse0.05.1.00.5.40 x In and , infinite0.04.300 s0.1.0.8 x In0.05.300 sExtremely inverseVery inverseNormal inverseLong-time inverseRI-type inverseRXIDG-type inverse0.05.1.00.1.10.0 x In and , infinite0.05. 300 s** Note!If the set start current exceeds 2.5 x In, themaximum continuous carry of the energizinginputs (4 x In) must be noted.*** Note!Because of the maximum measured current(63 x In), the setting value 2.5 is used for theIDMT calculation if the set value is greater than2.5. This makes the operate time faster than thetheoretical IDMT curve. However, the stagealways starts according to the set value.11

Data transmissionTransmission modeData codeSelectable data transfer ratesFibre optic bus connection modules forpowering from external power source- for plastic core cables- for glass fibre cablesFibre optic bus connection modules forpowering from host relay- for plastic core cables- for glass fibre cablesInsulation Tests *)Dielectric test IEC 60255-5Impulse voltage test IEC 60255-5Insulation resistance measurement IEC 60255-5Electromagnetic Compatibility Tests *)High-frequency (1 MHz) burst disturbance testIEC 60255-22-1- common mode- differential modeElectrostatic discharge test IEC 60255-22-2 andIEC 61000-4-2- contact discharge- air dischargeFast transient disturbance test IEC 60255-22-4and IEC 61000-4-4- power supply- I/O portsSpike test, class III (KEMA)Magnetic field test acc. to IEC 60521Power supply testsPower supply variationVariation voltageInterruption 80 V - 50%Interruption 80 V - 100%Interruption 255 V - 100%Mechanical testsVibration testsShock and Bump testsSeismic testsEnvironmental conditionsCorrosion testSpecified ambient service temperature rangeLong term damp heat withstand accordingto IEC 60068-2-3Transport and storage temperature rangeProtection by enclosure according to IEC 60529,when the relay is panel mountedMass of the relay including flush mounting relay caseFibre optic serial busASCII4800 or 9600 BdSPA-ZC 17 BBSPA-ZC 17 MMSPA-ZC 21 BBSPA-ZC 21 MM2 kV, 50 Hz, 1 min5 kV, 1.2/50 µs, 0.5 J 100 MΩ, 500 Vdc2.5 kV1.0 kV6 kV8 kV4 kV2 kV1 kV, 0.15/50 µs400 A/m68 265 V0 200 ms0 30 ms0 160 msIEC 60255-21-1, class 2IEC 60255-21-2, class 2ANS/IEEE C37.98-1987- 3.0 g in the horizontal direction- 3.0 g in the vertical directionBattelle-test-10. 55 C 95% at 40 C for 56 d-40. 70 CIP 54 3.5 kg*) The tests do not apply to the serial port, which is used exclusively for the bus connection module.12

Maintenanceand repairWhen the protection relay is operating underthe conditions specified in the section "Technical data", the relay is practically maintenancefree. The relay modules include no parts orcomponents subject to an abnormal physical orelectrical wear under normal operating conditions.If the environmental conditions at the relayoperating site differ from those specified, as totemperature, humidity, or if the atmospherearound the relay contains chemically active gasesor dust, the relay ought to be visually inspectedin association with the relay secondary test orwhenever the relay modules are withdrawn fromthe case. At the visual inspection the followingthings should be noted:- Signs of mechanical damage on relay modules,contacts and relay case- Accumulation of dust inside the relay cover orcase; remove by blowing air carefully- Rust spots or signs of erugo on terminals, caseor inside the relayOn request, the relay can be given a specialtreatment for the protection of the printed circuit boards against stress on materials, caused byabnormal environmental conditions.Spare partsThree-phase overcurrent and earth-fault modulePower supply and output relay moduleUaux 80.265 V ac/dcUaux 18.80 V dcInput moduleBus connection moduleIf the relay fails in operation or if the operatingvalues remarkably differ from those of the relayspecifications, the relay should be given a properoverhaul. Minor measures can be taken by personnel from the instrument work-shop of thecustomer’s company, e.g. replacement of auxiliary relay modules. All major measures involving overhaul of the electronics are to be taken bythe manufacturer. Please contact the manufacturer or his nearest representative for furtherinformation about checking, overhaul andrecalibration of the relay.Note!Numerical protection relays contain electroniccircuits which are liable to serious damage due toelectrostatic discharge. Before removing a module containing electronic circuits, ensure thatyou are at the same electrostatic potential as theequipment, for instance, by touching the relaycase.Note!Static protection relays are measuring instruments and should be handled with care andprotected against moisture and mechanical stress,especially during transport.SPCJ 4D29SPTU 240 R1SPTU 48 R1SPTE 4E1SPA-ZC 17 or SPA-ZC 2113

Dimensions formountingThe relay is housed in a normally flush-mountedcase. The relay can also be arranged for semiflush mounting with the use of a 40 mm, 80 mmor 120 mm raising frame, which reduces thedepth behind the panel by the same dimension.The type designations of the raising frames areSPA-ZX 111 for the 40 mm frame, SPA-ZX 112for the 80 mm frame and SPA-ZX 113 for the120 mm frame. A surface mounting case SPAZX 110 is also available.The relay case is made of profile aluminium andfinished in beige.A cast aluminium alloy mounting frame with arubber gasket provides a degree of protection byenclosure to IP 54 between the relay case and thepanel surface when the relay is panel mounted.The relay case is complete with a hinged gasketed,clear, UV-stabilized polycarbonate cover with asealable fastening screw. The degree of protection by enclosure of the cover is also IP 54.A terminal strip and two multipole connectorsare mounted on the back of the relay case tofacilitate all input and output connections. Toeach heavy duty terminal, i.e. measuring input,power supply or trip output, one 6 mm2, one4 mm2 or one or two 2.5 mm2 wires can beconnected. No terminal lugs are needed. Thesignalling outputs are available on a six poledetachable connector and the serial bus connection is using a 9-pin D-type connnector.142162139 1129 1abPanel cut-outRaising frameSPA-ZX 111SPA-ZX 112SPA-ZX 113Order information1. Quantity and type designation2. Rated frequency3. Auxiliary voltage4. Accessories5. Special requirements143413630250216186ab1761369674114154

relay parameters with a portable PC. The combined overcurrent and earth-fault relay SPAJ 140 C is intended to be used for the selective short-circuit and earth-fault protection of radial feeders in solidly earthed, resistance earthed or impedance earthed power systems. The inte