Shut down the UPS inverter on the LCD or WebUI, and the UPS transfers to bypass
mode.
If you shut down the inverter when the bypass input voltage or frequency exceeds the
specied threshold, the UPS supplies no power, and the loads are powered o.
9.3 Transferring to Maintenance Bypass Mode
Prerequisites
● Strictly observe the following procedure to transfer the UPS to maintenance
bypass mode. Otherwise, loads may experience power failures.
● 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
o.
Procedure
Step 1 Transfer the UPS to bypass mode.
Step 2 Turn on the maintenance bypass switch.
1. If the maintenance bypass switch is locked, unlock it rst.
2. Rotate the maintenance bypass switch to the ON position. The system
transfers to maintenance bypass mode.
Figure 9-1 Turning on the maintenance bypass switch (30 kVA/40 kVA)
UPS5000-A-(30 kVA-120 kVA)
User Manual 9 FAQ
Issue 17 (2024-02-21) Copyright © Huawei Digital Power Technologies Co., Ltd. 160
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