UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
Copyright © Huawei Technologies Co., Ltd.
Figure 5-21 Closing the maintenance bypass switch (UPS5000-E-300K-SMT, isolation
protection)
After the UPS transfers to maintenance bypass mode, the Maint. breaker closed, Maint. breaker
misoperation and Bypass mode alarms are displayed on the LCD.
----End
5.8 Transferring from Maintenance Bypass Mode to
Normal Mode
Context
Before transferring the UPS from maintenance bypass mode to normal mode, ensure that the
bypass input and output are normal.
Procedure
Step 1 Open the maintenance bypass switch.
The Maint. breaker misoperation and Maint. Breaker closed alarms disappear from the
alarm list. Check whether the UPS works in bypass mode by viewing the system running
status diagram on the LCD or WebUI.
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