GE Digital Energy SG 400 kVA - Page 6

Modifications reserved Page 6/86
OPM_SGS_USM_M40_M50_1US_V020.doc Operating Manual SG Series 400 & 500 kVA
7.2 PROCEDURES FOR UPS FUNCTIONING AS FREQUENCY CONVERTER .................................................... 48
7.2.1 Start-up of the SG Series as frequency converter .......................................................................... 48
7.2.2 Complete UPS shutdown (No Load supply)........................................................................................ 49
7.2.3 Restore to normal operation after “total off”..................................................................................... 50
7.2.4 Restore to normal operation after EPO (Emergency Power Off) ............................................... 51
7.3 PROCEDURES FOR PARALLEL SYSTEM .................................................................................................................. 52
7.3.1 Parallel System start-up .............................................................................................................................. 52
7.3.2 Maintenance system shutdown (Load supplied from Q2 on all Units) ................................. 54
7.3.3 From Manual Bypass (Q2) to normal function VFI .......................................................................... 56
7.3.4 Separate a Unit from the parallel system (System Redundancy)........................................... 58
7.3.5 Reconnect a Unit to a parallel system.................................................................................................. 60
7.3.6 Parallel system shutdown (No Load supply)...................................................................................... 61
7.3.7 Restore to normal operation after “total off”..................................................................................... 63
7.3.8 Restore to normal operation after EPO (Emergency Power Off) ............................................... 65
7.4 PROCEDURES FOR PARALLEL SYSTEM WITH COMMON BATTERY............................................................ 67
7.4.1 Parallel System start-up .............................................................................................................................. 67
7.4.2 Maintenance system shutdown (Load supplied from Q2 on all Units) ................................. 69
7.4.3 From Manual Bypass (Q2) to normal function VFI .......................................................................... 71
7.4.4 Separate a Unit from the parallel system (System Redundancy)........................................... 73
7.4.5 Reconnect a Unit to a parallel system.................................................................................................. 75
7.4.6 Parallel system shutdown (No Load supply)...................................................................................... 76
7.4.7 Restore to normal operation after “total off”..................................................................................... 78
7.4.8 Restore to normal operation after EPO (Emergency Power Off) ............................................... 80
8 OPTIONS......................................................................................................................................................... 82
8.1 COMMUNICATION OPTIONS....................................................................................................................................... 82
8.2 OPTIONS IN UPS CABINET........................................................................................................................................... 82
8.3 CONNECTION FOR OPTIONS...................................................................................................................................... 83
8.3.1 Remote Signalling Box (RSB) ...................................................................................................................... 83
9 MAINTENANCE.............................................................................................................................................. 84
9.1 MAINTENANCE.................................................................................................................................................................. 84
9.1.1 Service check .................................................................................................................................................... 84
9.1.2 Fans and ventilation ...................................................................................................................................... 84
9.1.3 Other components with limited lifetime .............................................................................................. 84
9.1.4 Battery.................................................................................................................................................................. 84
9.1.5 Long shut-down periods of the UPS-system..................................................................................... 85
9.1.6 UPS room conditions and temperature ............................................................................................... 85
9.1.7 Long shut-down periods of the UPS-system..................................................................................... 85
10 NOTES............................................................................................................................................................. 86
10.1 NOTES FORM ..................................................................................................................................................................... 86