Huawei UPS5000-E Series User Manual page 187

UPS5000-E-(20 kVA-160 kVA)
User Manual (Low voltage)
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Procedure
Step 1 Transfer the UPS to bypass mode.
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.
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The Maint. breaker closed alarm is displayed in the alarm list, as shown in
UPS transfers to maintenance bypass mode.
Figure 5-16 Locked maintenance bypass switch
Issue 03 (2020-04-27)
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.
For the UPS5000-E-60 kVA and UPS5000-E-100 kVA, the maintenance bypass switch is
OFF by default and the handle points right horizontally. Turn on the switch by turning
the handle clockwise 90 degrees until it points to the ground, as shown in
For the UPS5000-E-160 kVA, the maintenance bypass switch is OFF by default and the
handle points to the ground. Turn on the switch by turning the handle clockwise 90
degrees until it points left horizontally, as shown in
Copyright © Huawei Technologies Co., Ltd.
Figure 5-16 shows a locked
Figure
Figure 5-18.
Figure
5 Operations
5-17.
5-19. The
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