UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 5-36 Maint. breaker closed alarm
After the UPS transfers to maintenance bypass mode, the Maint. breaker closed 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 by performing the following actions according to the
UPS version being used:
For the UPS5000-E-200K-SM, rotate the handle counterclockwise 90 degrees (so that it
points rightwards), as shown in Figure 5-37.
For the UPS5000-E-200K-FM, pull down the switch, as shown in Figure 5-38.
For the UPS5000-E-300K-SM/SMT, rotate the handle counterclockwise 90 degrees (so
that it points downwards).
The Maint. Breaker closed alarm disappears from the alarm list. Check whether the UPS
works in bypass mode by viewing the system running status diagram on the LCD or WebUI.