8.3.4 Procedures for Inserting One Isolated UPS module in Parallel System
IM P O R T A N T ! T h ese pro cedu res sh all o n ly be carried o u t by service perso n n el o f Vertiv o r u n der th eir
gu idan ce.
The following procedures are used to reintegrate a UPS module that has been previously isolated from the parallel system:
1.
Confirm that the I/O cable, battery cable, and parallel cable of the single module are correctly connected.
2.
Confirm that the maintenance bypass switch Q3 or the single module external maintenance switch is
disconnected. Close the output switch Q5, external output switch, external power bypass switch, bypass input
switch Q2, rectifier input switch Q1, and external power mains switch of each UPS in turn.
3.
When the single module starts, close the BCB and then manually turn on the inverter.
Wait a few seconds after starting the inverter of inserted UPS system, it connects with existing systems for parallel operation
automatically.
8.3.5 Procedures for Completely Powering Down UPS
Complete UPS shutdown and load power-off should follow this procedure. All power switches, isolating switches and
breakers are disconnected, and then UPS no longer supplies power to the load.
CA UT IO N : T h e fo llo win g pro cedu res will cu t o ff th e lo ad po wer m ak in g th e lo ad co m pletely
po wer o ff.
1.
Pressing the EPO button of each UPS stops the operation of rectifier, inverter, static switch, and battery.
2.
Disconnect the rectifier input switch Q1 and bypass input switch Q2 of each UPS. At the moment, all the internal
power supply is closed and the touchscreen does not display any more.
3.
Disconnect the output switch Q5 of each UPS.
W A R N IN G !
1. P o st a label at th e A C in pu t distribu tio n (gen erally far away fro m th e UP S) to alert th at th e
UP S m ain ten an ce is bein g o perated.
2. W ait 10 m in u tes fo r th e in tern al DC bu s capacitan ce disch argin g. T h en th e UP S is co m pletely
sh u t do wn .
W A R N IN G ! Hazardo u s battery vo ltage
T h e battery term in als still h ave h azardo u s vo ltage after th e UP S is co m pletely sh u tdo wn .
8 Parallel System and LBS System
148
Vertiv™ Liebert® APM Plus User Manual
Summary of Contents for APM Plus 0500kMK16FN02000
Page 1: ...Vertiv Liebert APM Plus User Manual 50 500 kVA UPS...
Page 8: ...vi This page intentionally left blank Vertiv Liebert APM Plus User Manual...
Page 34: ...2 Overview 26 This page intentionally left blank Vertiv Liebert APM Plus User Manual...
Page 45: ...Four switches 500 kVA 3 Mechanical Installation 37 Vertiv Liebert APM Plus User Manual...
Page 76: ...Figure 5 11 Customize the display 5 Touch Screen 68 Vertiv Liebert APM Plus User Manual...
Page 86: ...Figure 5 20 Enable module redundancy 5 Touch Screen 78 Vertiv Liebert APM Plus User Manual...
Page 91: ...Figure 5 24 Status Gauge setting options 5 Touch Screen 83 Vertiv Liebert APM Plus User Manual...
Page 92: ...5 Touch Screen 84 Vertiv Liebert APM Plus User Manual...
Page 94: ...5 Touch Screen 86 Vertiv Liebert APM Plus User Manual...
Page 95: ...Figure 5 26 Unit status Bypass details 5 Touch Screen 87 Vertiv Liebert APM Plus User Manual...
Page 96: ...Figure 5 27 Unit status Battery details 5 Touch Screen 88 Vertiv Liebert APM Plus User Manual...
Page 97: ...Figure 5 28 Unit status Load details 5 Touch Screen 89 Vertiv Liebert APM Plus User Manual...
Page 100: ...5 Touch Screen 92 Vertiv Liebert APM Plus User Manual...
Page 112: ...5 Touch Screen 104 This page intentionally left blank Vertiv Liebert APM Plus User Manual...
Page 184: ...12 Specifications 176 This page intentionally left blank Vertiv Liebert APM Plus User Manual...