Vertiv Liebert EXS 80kVA UPS, User Manual

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Vertiv™ Liebert EXS 80kVA UPS User Manual
5 UPS Operating Instructions
3. Wait until the test completes.
After five seconds, a pop window will appear to show the result of this diagnosis: rectifier, inverter, monitor
OK or fault.
5.6 UPS Shutdown Procedures
5.6.1. Procedures for Completely Powering down UPS
In order to shut the UPS down completely and disconnect the power supply to the load, proceed as follows:
All power switches, isolating switches and breakers are switched to off, and the UPS no longer supplies
power to the load.
CAUTION: The following procedures will interrupt the power supply to the load, switching it off.
1. Unplug the EPO terminal to deactivate the rectifier, inverter, bypass and battery.
2. Set the main input switch Q1, bypass input switch Q2, output switch Q5 to off. At this point, all the
internal power supplies are deactivated and the LCD screen is switched off.
WARNING! 1. Post a label on the AC input distribution line (generally at a distance from the UPS)
to alert personnel that UPS maintenance is in progress.
2. Wait 10 minutes for the internal DC bus capacitors to discharge. Then the UPS is completely
shut down.
WARNING! Hazardous battery voltage
Hazardous voltages are still present on the battery terminals, even after the UPS has been shut
down completely.
5.6.2. Procedures for Completely Powering down UPS while Maintaining
Power to Load
The following procedures are applicable to completely powering down the UPS and still keeping the power
supply to the load. Refer to the procedures in Section 5.3.4.
5.7 EPO
The REPO is designed to switch off the UPS in emergency conditions (such as fire, flood). To carry out
EPO, you just need to unplug the EPO terminal, then the system will turn off the rectifier, inverter and stop
powering the load immediately (including the inverter and bypass), and the battery stops charging or
discharging.
After REPO, if the mains input is present, the UPS control circuit will remain active; however, the output is
interrupted.
To completely remove all mains power from the UPS, open the main input switch Q1, bypass input switch
Q2, output switch Q5 in turn, and then open the battery terminals.