UPS5000-E-(40 kVA-320 kVA)
User Manual
5 Operations
Issue 10 (2015-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
162
Step 4
Turn off the battery circuit breaker. If there are multiple battery strings, turn off the general
circuit breaker between battery strings and the UPS and then the circuit breaker for each
battery string.
Step 5
Open the mains and bypass input circuit breakers on the input PDC, or turn off the external
input power distribution switch.
Step 6
(Optional) Open the input surge protection circuit breaker (if there is) on the input PDC.
If you need to shut down the inverter and transfer the UPS to bypass mode, check that the UPS has
not generated an alarm and perform
If you need to shut down the UPS, perform all of the preceding steps.
----End
5.3 Starting the UPS in Battery Mode
Procedure
Step 1
Ensure that batteries are properly connected. Use a multimeter to check that the absolute
values of the positive and negative battery string voltages are both greater than a specified
value (1.9 x 6 x Number of batteries).
Step 2
Open the mains and bypass input circuit breakers. If the mains and bypass have no input, turn
on the battery circuit breaker. If there are multiple battery strings, turn on the circuit breaker
for each battery string and then the general circuit breaker between battery strings and the
UPS.
Step 3
Use a multimeter to check that the absolute values of the positive and negative battery string
voltages at the UPS battery input terminals are both greater than a specified value (1.9 x 6 x
Number of batteries).
Step 4
Press the
Batt. start
button on the bypass module, as shown in
The UPS enters battery mode. The LCD displays the Huawei logo and an initialization
progress bar.
Figure 5-18
Battery startup button
