◆
Switch ON the output breaker.
◆
Switch ON the input breaker.
The UPS powers from the static bypass instead of the maintenance bypass, then
the bypass LED will light up.
◆
Switch OFF the maintenance bypass breaker, then the output is supplied by the
bypass of the modules.
◆
Put on the maintenance switch cover.
The rectifier will operate normally after 30 seconds. If the inverter works normally, the
system will be transferred from bypass mode to normal mode.
4.2.4 Cold start procedure
CAUTION!
Follow these procedures when the input AC Utility Failure, but battery is normal
◆
Switch on the battery switch.
The battery will feed the Auxiliary power board.
◆
Switch on the Output switch
◆
Trigger the cold start button of the module as the position 5 of the above
drawing.
When battery normal, rectifier starts operation, 30s later, inverter starts and
operates and battery LED on
CAUTION!
Wait f o r approximately 30 seconds when close the battery switch bef ore
you press the black start key
4.2.5 Shut down procedure
CAUTION!
This procedure should be followed to completely shut down the UPS and the
LOAD. After all power switches, isolators and circuit breakers are opened, there will
be no output.
◆
Switch OFF the BATTERY breaker
；
◆
Open the UPS door to easily access to the main power switch
；
◆
Switch OFF the input breaker.
◆
Switch OFF the OUTPUT power switch.
The UPS shuts down
；
◆
To completely isolate the UPS from AC Mains, all input switches of Utility shall
be completely off, which includes the ones for rectifier and bypass.
◆
The primary input distribution panel, which is often located far away from the