LV generator protection - engineering site - Schneider Electric
LV generator protection - engineering site - Schneider Electric
LV generator protection - engineering site - Schneider Electric
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6.1. Characteristics tablesof circuit breakersCompact NSfrom 630 up to 3200 A045151si045178siCompact NS800H.Compact NS2000H.(1) 65°C with vertical connections. See the temperaturederating tables for other types of connections.Compact circuit breakersnumber of polescontrol manual toggledirect or extended rotary handleelectrictype of circuit breakerconnections fixed front connectionrear connectionwithdrawable (on chassis) front connectionrear connectionelectrical characteristics as per IEC 60947-2 and EN 60947-2rated current (A) In 50 °C65 °C (1)rated insulation voltage (V)Uirated impulse withstand voltage (kV)Uimprated operational voltage (V) Ue AC 50/60 HzDCtype of circuit breakerultimate breaking capacity (kA rms) lcu AC 50/60 Hz 220/240 V380/415 V440 V500/525 V660/690 VDC250 V500 Vservice breaking capacity (kA rms) lcs Value or % Icushort-time withstand current (kA rms) lcw 0.5 sV AC 50/60 Hz1 ssuitability for isolationutilisation categorydurability (C-O cycles) mechanicalelectrical 440 V In/2In690 V In/2Inpollution degreeelectrical characteristics as per Nema AB1breaking capacity at 60 Hz (kA)<strong>protection</strong> and measurementsinterchangeable control unitsoverload <strong>protection</strong> long time Ir (In x …)short-circuit <strong>protection</strong> short time Isd (Ir x …)instantaneous Ii (In x …)earth-fault <strong>protection</strong>lg (In x …)residual earth-leakage <strong>protection</strong>I∆nzone selective interlockingZSI<strong>protection</strong> of the fourth polecurrent measurementsadditional indication and control auxiliariesindication contactsvoltage releasesremote communication by busdevice-status indicationdevice remote operationtransmission of settingsindication and identification of <strong>protection</strong> devices and alarmstransmission of measured current valuesinstallationaccessoriesdimensions fixed devices, front connections (mm)H x W x Dweight fixed devices, front connections (kg)MX shunt releaseMN undervoltage release240 V480 V600 Vterminal extensions and spreadersterminal shields and interphase barriersescutcheons3P4P3P4Psource changeover system (see section on source changeover systems)manual, remote-operated and automatic source changeover systems46