KStar YDC9300-RT Series, Руководство по эксплуатации

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Switch to mechanical bypass
CAUTION!
If the UPS is running normally and can be controlled through the display, carry out
steps 1 to 5; otherwise, jump to Step 4.
◆ Open the cover of maintenance switch, the UPS turns to bypass mode
automatically.
◆ Turn on MAINTANCE breaker;
◆ Open BATTERY breaker;
◆ Switch OFF the MAINS breakers of all modules
◆ Open all OUTPUT breakers;
At this time the bypass source will supply to the load through the MAINTENANCE
breaker.
Switch to normal operation (from mechanical bypass)
CAUTION!
Never attempt to switch the UPS back to normal operation until you have verified
that there are no internal UPS faults
◆ Open the front and rear doors of the UPS to be easily access to the main
power switches
◆
Switch ON the output breakers of the modules.
◆
Switch ON the input breakers of the modules.
The UPS powers from the static bypass instead of the maintenance bypass,
then the bypass LED and output 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.
4.2.5 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.
◆
Press the INVERTER OFF button on the right side of the operator control
panel for about two seconds
；
◆
The Inverter LED will be extinguished and audible alarm comes