UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5.7 Transferring to Maintenance Bypass Mode
Context
Installing a lock on the maintenance bypass switch is advised. 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 not normal, the loads may power off.
Procedure
Step 1 Transfer the UPS to the bypass mode by referring to Step 1 in 5.2 Shutting Down and
Powering Off the UPS.
Step 2 Close 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 clockwise 90 degrees (so that the
handle points downwards) as shown in Figure 5-32.
For the UPS5000-E-200K-FM, remove the barrier chip on the maintenance bypass
switch and close the switch, as shown in Figure 5-33.
For the UPS5000-E-300K-SM/SMT, rotate the handle clockwise 90 degrees (so that the
handle points leftwards) as shown in Figure 5-34 (for the UPS5000-E-300K-SM) and
Figure 5-35 (for the UPS5000-E-300K-SMT).
The Maint. breaker closed alarm is displayed in the alarm list, as shown in Figure 5-36. The
UPS transfers to maintenance bypass mode.
To Next Page
Loading...
Need help?
General
