UPS5000-E-(400 kVA-600 kVA)
User Manual (60 kVA Power Modules)
5 Operations
Issue 05 (2019-12-24)
Copyright © Huawei Technologies Co., Ltd.
181
Step 2
Start the inverter.
----End
5.9 Performing EPO
After the EPO button is turned on, the UPS supplies no power and the loads shut down.
In maintenance bypass mode, the UPS continues to supply power even after the EPO
button is turned on.
Press the external EPO switch that connects to the dry contact card or remove the 4-pin
terminal on the EPO port of the dry contact card of the bypass unit.
Figure 5-19
EPO ports
After you press the EPO button, the
EPO
and
No power supplied
alarms are displayed on the
LCD.
5.10 Clearing the EPO State
Procedure
Step 1
Clear the EPO state. Ensure that the EPO button connected to the dry contact is not in the
EPO state.
Step 2
Clear the EPO alarm.
On the LCD
On the LCD, choose
System Info
>
Alarms
and tap
Clear Faults
. In the displayed
dialog box, tap
Yes
. The EPO alarm is cleared successfully.
On the WebUI
Choose
Monitoring
>
Control
>
System Commands and Tests
and click
Clear Fault
.
The EPO alarm is cleared successfully.
Step 3
Check that the EPO alarm is cleared by viewing active alarms. If the system bypass input is
normal, the UPS transfers to bypass mode.