LV generator protection - engineering site - Schneider Electric

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NW08 NW10 NW12 NW16 NW20 NW25 NW32 NW40 NW40b NW50 NW63800 1000 1250 1600 2000 2500 3200 4000 4000 5000 6300800 1000 1250 1600 2000 2500 3200 4000 4000 5000 6300400 400 630 800 1000 1250 1600 2000 2000 2500 3200to 800 to 1000 to 1250 to 1600 to 2000 to 2500 to 3200 to 4000 to 4000 to 5000 to 6300N1 H1 H2 L1* H10 H1 H2 H3 L1* H10 H1 H2 H3 H10 H1 H242 65 100 150 - 65 100 150 150 - 65 100 150 - 100 15042 65 100 150 - 65 100 150 150 - 65 100 150 - 100 15042 65 85 130 - 65 85 130 130 - 65 85 130 - 100 13042 65 85 100 - 65 85 100 100 - 65 85 100 - 100 100- - - - 50 - - - - 50 - - - 50 - -100 % 100 % 100 % 100 %42 65 85 30 50 65 85 65 30 50 65 85 65 50 100 10022 36 50 30 50 36 75 65 30 50 65 75 65 50 100 100without without 190 80 without without 190 150 80 without without 190 150 without without 27088 143 220 330 - 143 220 330 330 - 143 220 330 - 220 33088 143 220 330 - 143 220 330 330 - 143 220 330 - 220 33088 143 187 286 - 143 187 286 286 - 143 187 286 - 220 28688 143 187 220 - 143 187 220 220 - 143 187 220 - 220 220- - - - 105 - - - - 105 - - - 105 - -25 25 25 10 25 25 25 25 10 25 25 25 25 25 25 25< 70 < 70 < 70 < 8042 65 100 150 - 65 100 150 150 - 65 100 150 - 100 15042 65 100 150 - 65 100 150 150 - 65 100 150 - 100 15042 65 85 100 - 65 85 100 100 - 65 85 100 - 100 100NA HA HF HA10 HA HF HA10 HA HF HA10 HA88 105 187 - 105 187 - 121 187 - 18788 105 187 - 105 187 - 121 187 - 18788 105 187 - 105 187 - 121 187 - 187- - - 105 - - 105 - - 105 -42 50 85 50 50 85 50 55 85 50 85- 36 50 50 36 75 50 55 75 50 8542 50 85 50 50 85 50 55 85 50 8525 20 20 1012.5 10 10 510 10 10 3 - 8 8 2 3 - 5 5 1.25 - 1.5 1.510 10 10 3 - 6 6 2 3 - 2.5 2.5 1.25 - 1.5 1.5- - - - 0.5 - - - - 0.5 - - - 0.5 - -10 10 10 - - 6 6 6 - - 2.5 2.5 2.5 - - -b b b b b b b b b b b b b b - -b b b b b b b b b b b b b b b bb b b - - b b - - - b (1) b (1) - - - -b b b - - b b - - - b b - - b b439 x 441 x 395 479 x 786 x 395439 x 556 x 395 479 x 1016 x 395352 x 422x 297 352 x 767x 297352 x 537x 297 352 x 997x 29790/120 225/30060/80 120/160sensor selectionsensor rating (A) 400 630 800 1000 1250 1600 2000 2500 3200 4000 5000 6300Ir threshold 160 250 320 400 500 630 800 1000 1250 1600 2000 2500setting (A) to 400 to 630 to 800 to 1000 to 1250 to 1600 to 2000 to 2500 to 3200 to 4000 to 5000 to 630051
6.2. Control unitscharacteristicsCompact NS400 to 630In shortCompact NS400 to 630 circuitbreakers, types N, H and L, 3-poleand 4-pole, may be equipped withany of the STR23SE, STR23SV,STR53UE and STR53SV electronictrip units.The STR53UE and STR53SV tripunits offer a wider range of settingsand the STR53UE offers a numberof optional protection, measurementand communications functions.For DC applications, the CompactNS400H and 630H circuit breakersare equipped with a built-in MPmagnetic trip unit.E88733E60 250 400 500 630STR23SE / STR53UESTR23SE / STR53UESTR23SV / STR53SVMPStandard protectionwith selectivityProtection of DCdistribution systemsProtection of systems supplied bygenerators. Protection of long cablesProtection of systems U > 525 VSelection of the trip unit depends on the type of distribution system protected andthe operational voltage of the circuit breaker.Protection for all types of circuits, from 60 to 630 A, is possible with only four tripunitcatalogue numbers, whatever the circuit-breaker operational voltage:b U y 525 V: STR23SE or STR53UEb U > 525 V: STR23SV or STR53SV.Trip units do not have a predefined rating. The tripping threshold depends on thecircuit breaker rating and the LT (long time) current setting.For example, for an STR23SE trip unit set to the maximum value, the trippingthreshold is:v 250 A, when installed on a Compact NS400 250 Av 630 A, when installed on a Compact NS630.52
Page 1 and 2: M M M MLow Voltage Expert Guides N
Page 4 and 5: In shortGenerator Sets (GS) are use
Page 6 and 7: ImplementationThe Generator Sets no
Page 8 and 9: Note 2: If there is an MV Set in Pr
Page 10 and 11: E79360EElectrical utilityHV incomer
Page 12 and 13: Replacement SourceThe Set’s purpo
Page 14 and 15: 2.2. Transfer deviceIt is interesti
Page 16 and 17: 2.2.2. SequenceMain source / Genera
Page 18 and 19: 3.1.2. Short-circuit current protec
Page 20 and 21: 3.2. Downstream LV network protecti
Page 22 and 23: E79475EGSRemote control 2Remote con
Page 24 and 25: Short-circuit downstream of a UPSTh
Page 27 and 28: Protection and Monitoringof a LV Ge
Page 29 and 30: Protection and Monitoringof a LV Ge
Page 31 and 32: The Schneiderprotection solution4.1
Page 35 and 36: The Schneiderprotection solutionThe
Page 37 and 38: The Schneiderprotection solutionb r
Page 41 and 42: Summary5.1.DiagramA typical example
Page 43 and 44: Summary5.3. Summaryfunctions produc
Page 45 and 46: 6.1. Characteristics tablesof circu
Page 51: 6.1. Characteristics tablesof circu
Page 55 and 56: 6.2. Control unitscharacteristicsCo
Page 57 and 58: 6.2. Control unitscharacteristicsCo
Page 59 and 60: E887406.2. Control unitscharacteris
Page 61 and 62: 6.2. Control unitscharacteristicsMi
Page 73 and 74: CTCDCE6.3. Communicationcharacteris
Page 75 and 76: CD3 CD2 CD1CE6 CE5 CE4CD3 CD2 CD183
Page 77 and 78: 6.3. Caractéristiquesde la communi

LV generator protection - engineering site - Schneider Electric

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