Transferring From Maintenance Bypass Mode To Normal Mode; Transferring To Bypass Mode - Huawei UPS5000-E User Manual

UPS5000-E-(400 kVA-800 kVA)
User Manual (50 kVA Power Modules)
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8.3 Transferring from Maintenance Bypass Mode to
Normal Mode
Context
Before transferring the UPS from maintenance bypass mode to inverter mode,
ensure that the bypass input and output are normal.
Procedure
Step 1 Turn off the maintenance bypass switch.
The Maint. breaker closed alarm disappears from the alarm list. View the system
running diagram on the LCD or WebUI to check whether the system works in
bypass mode.
Step 2 Start UPS inverters.
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8.4 Transferring to Bypass Mode

Before shutting down the inverter, ensure that the bypass is normal. If the bypass
is not normal, after the inverter is shut down, the UPS supplies no power, and the
loads shut down.
Issue 17 (2023-07-10)
NO TE
● Figure 8-3 shows how to operate the maintenance bypass switch on a 400 kVA UPS in
full configuration. Operate the maintenance bypass switches on a 400 kVA UPS in
standard configuration and a 500 kVA UPS in the same way.
operate the maintenance bypass switch on a 600 kVA UPS in standard configuration.
Operate the maintenance bypass switches on a 600 kVA UPS in full configuration and
an 800 kVA UPS in the same way.
● Exercise force when turning on or off the maintenance bypass switch.
NO TE
After the system transfers to maintenance bypass mode, the Maint. breaker closed and
Bypass mode alarms are displayed on the LCD.
NO TICE
NO TE
If a lock, stopper, or barrier is configured for the maintenance bypass switch, lock the switch
or reinstall the stopper or barrier.
NO TICE
Copyright © Huawei Digital Power Technologies Co., Ltd.
8 FAQ
Figure 8-4 shows how to
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