Huawei UPS5000-E Series - 5.9 Performing EPO; 5.10 Clearing the EPO State

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
5 Operations
Issue 11 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
236
If the stopper or barrier of the maintenance bypass switch is configured, reinstall the stopper or barrier
on the maintenance bypass switch.
Step 2 Start UPS inverters.
----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 5-22 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