SIPROTEC 4 7SJ63 Multifunction Protection Relay - Siemens

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5 Overcurrent Protection / 7SJ635Technical dataSetting rangesDead time(separate for phase and earthand individual for shots 1 to 4)0.01 to 320 s (in steps of 0.01 s)Blocking duration for manual- 0.5 s to 320 s or 0 (in steps of 0.01 s)CLOSE detectionBlocking duration after 0.5 s to 320 s (in steps of 0.01 s)reclosureBlocking duration after 0.01 to 320 s (in steps of 0.01 s)dynamic blockingStart-signal monitoring time 0.01 to 320 s or ∞ (in steps of 0.01 s)Circuit-breaker supervisiontime0.1 to 320 s (in steps of 0.01 s)Max. delay of dead-time start 0 to 1800 s or ∞ (in steps of 0.1 s)Maximum dead time extension 0.5 to 320 s or ∞(in steps of 0.01 s)Action time 0.01 to 320 s or ∞ (in steps of 0.01 s)The delay times of the following protection function can be altered individuallyby the ARC for shots 1 to 4(setting value T = T, non-delayed T =0,blockingT = ∞):I>>, I>, I p, I dir>>, I dir>, I pdirI E>>, I E>, I Ep, I Edir>>, I Edir>, I EdirAdditional functionsLockout (final trip),delay of dead-time start via binary input(monitored),dead-time extension via binary input(monitored),co-ordination with other protectionrelays,circuit-breaker monitoring,evaluation of the CB contactsBreaker failure protection (ANSI 50 BF)Setting rangesPickup threshold CB I> 0.2to5A 1) (in steps of 0.01 A)Delaytime 0.06to60sor∞ (in steps of 0.01 s)TimesPickup timeswith internal startstart via controlwith external startDropout timesTolerancesPickup valueDelay timeNegative-sequence current detection (ANSI 46)Definite-time characteristic (ANSI 46-1 and 46-2)is contained in the delay timeis contained in the delay timeis contained in the delay timeApprox. 25 ms2 % of setting value (50 mA) 1)1%or20msSetting rangesPickup current I 2>, I 2>> 0.5to15Aor∞ (in steps of 0.01 A)Delay times0to60sor∞ (in steps of 0.01 s)Dropout delay time T DO 0to60s(instepsof0.01s)Functional limit All phase currents ≤ 20 A 1)TimesPickup timesDropout timesDropout ratioTolerancesPickup thresholdsDelay timesApprox. 35 msApprox. 35 msApprox. 0.95 for I 2 /I nom >0.33 % of the setting value or 50 mA 1)1%or10msInverse-time characteristic (ANSI 46-TOC)Setting rangesPickup currentTime multiplier T(IEC characteristics)Time multiplier D(ANSI characteristics)0.5to10A 1) (in steps of 0.01 A)0.05 to 3.2 s or ∞ (in steps of 0.01 s)0.5to15sor∞ (in steps of 0.01 s)Functional limit All phase currents ≤ 20 A 1)Trip characteristicsIECANSIPickup thresholdDropoutIEC and ANSI(without disk emulation)ANSI with disk emulationTolerancesPickup thresholdTime for 2 ≤ M ≤ 20Starting time monitoring for motors (ANSI 48)Normal inverse, very inverse, extremelyinverseInverse, moderately inverse, very inverse,extremely inverseApprox. 1.1 · I 2p setting valueApprox. 1.05 · I 2p setting value,which is approx. 0.95 · pickup thresholdApprox. 0.90 · I 2p setting value3 % of the setting value or 50 mA 1)5 % of setpoint (calculated)+2 % current tolerance, at least 30 msSetting rangesMotor starting current I STARTUP 2.5to80A 1) (in steps of 0.01)Pickup threshold I MOTOR START 2to50A 1) (in steps of 0.01)Permissible starting1to180s(instepsof0.1s)time T STARTUPPermissible blocked rotor 0.5 to 120 s or ∞ (in steps of 0.1 s)time T LOCKED-ROTORTripping time characteristic2For I > I MOTOR STARTt = ⎛ ⎝ ⎜ ISTARTUP⎞⎟ ⋅ T STARTUPI ⎠Dropout ratio I MOTOR START Approx. 0.95TolerancesPickup thresholdDelay timeI STARTUP = Rated motor startingcurrentI = Actual current flowingT STARTUP= Tripping time for ratedmotor starting currentt = Tripping time in seconds2%ofsettingvalueor50mA 1)5%or30ms1) At I nom = 1 A, all limits divided by 5.5/140Siemens SIP · 2006
5 Overcurrent Protection / 7SJ63Technical dataRestart inhibit for motors (ANSI 66)Setting rangesMotor starting current relativeto rated motor currentI MOTOR START/I Motor NomRated motor current I Motor NomMax. permissible starting timeT Start MaxEquilibrium time T EqualMinimum inhibit timeT MIN. INHIBIT TIMEMax. permissible number ofwarm startsDifference between cold andwarm startsExtension k-factor for coolingsimulations of rotor at zero speedk τ at STOPExtension factor for cooling timeconstant with motor runningk τ RUNNINGRestarting limitUndercurrent monitoring (ANSI 37)Signal from the operationalmeasured values1.1to10(instepsof0.1)1to6A 1) (in steps of 0.01 A)3to320s(instepsof1s)0 min to 320 min (in steps of 0.1 min)0.2 min to 120 min (in steps of 0.1 min)1to4(instepsof1)1to2(instepsof1)0.2 to 100 (in steps of 0.1)0.2 to 100 (in steps of 0.1)Θn −1= Θ ⋅nrestart rot max perm c cΘ restart = Temperature limit belowwhich restarting is possibleΘ rot max perm = Maximum permissiblerotor overtemperature(= 100 % in operationalmeasured valuen cTemperature monitoring box (ANSI 38)Temperature detectorsConnectable boxesNumber of temperaturedetectors per boxType of measuringMounting identificationThresholds for indicationsFor each measuring detectorStage 1Stage 2Θ rot/Θ rot trip)= Number of permissiblestart-ups from cold statePredefined with programmable logic1or2Max. 6Pt 100 Ω or Ni 100 Ω or Ni 120 Ω“Oil” or “Environment” or “Stator” or“Bearing” or “Other”-50 °C to 250 °C (in steps of 1 °C)-58 °F to 482 °F (in steps of 1 °F)or ∞ (no indication)-50 °C to 250 °C (in steps of 1 °C)-58 °F to 482 °F (in steps of 1 °F)or ∞ (no indication)Undervoltage protection (ANSI 27)Operating modes/measuringquantities3-phase1-phaseSetting rangesPickup thresholds V
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SIPROTEC 4 7SJ63 Multifunction Protection Relay - Siemens

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