UPS5000-E-(40 kVA-320 kVA)
User Manual
5 Operations
Issue 10 (2015-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
172
Figure 5-29
Common test logs
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5.7 Transferring to Maintenance Bypass Mode
Context
You are advised to install a lock on the maintenance bypass switch. The lock core has a
diameter of 5–10 mm.
Strictly observe the following procedure to transfer the UPS to maintenance bypass mode.
Otherwise, loads may power off.
In maintenance bypass mode, the mains supplies power to the loads directly over the
maintenance bypass. If the mains is abnormal, the loads may power off.
Procedure
Step 1
Transfer the UPS to bypass mode by following the steps in section
Step 2
Turn on the maintenance bypass switch.
If the maintenance bypass switch is locked, unlock it first.
maintenance bypass switch. Turn on the switch to transfer the UPS to maintenance bypass
mode.