UPS5000-H-1200 kVA
User Manual (100 kVA Power Modules)
6 Routine Maintenance
Issue 01 (2020-07-15)
Copyright © Huawei Technologies Co., Ltd.
157
Item
Expected Result
Troubleshooting
Float charging voltage:
2.25 V/cell ±0.02 V/cell
of a battery are normal.
2.
If the charging voltage of a
battery exceeds the
specifications requirement,
perform a complete
forcible equalized charging
for the battery, and check
again whether the voltage
is normal.
3.
If the fault persists, contact
Huawei technical support.
Shallow discharge test
(recommended)
Conduct a shallow discharge
test when the UPS is backed
up to verify that the batteries
can discharge normally.
1.
If the batteries cannot
discharge normally, locate
the fault (for abnormal
alarms, see the alarm list).
2.
If the fault persists, contact
Huawei technical support.
6.2.4 Annual Maintenance
Table 6-6
Annual maintenance
Item
Expected Result
Troubleshooting
Capacity Test
When the UPS is backed up,
discharge a battery to the
undervoltage alarm threshold, to
refresh the capacity of the battery.
1.
Locate the cause when an
exception is identified.
2.
If the fault persists, contact
Huawei technical support.
Battery
connection
reliability
1.
Each battery terminal is
connected reliably. (When
battery strings are powered
off, check the reliability of
each terminal in the order
from positive terminals to
negative terminals.)
2.
The tightening torque of each
battery screw meets the
requirements of the battery
manufacturer. (A torque
wrench is used for checking
the torque. After checking that
the battery screws meet the
requirements, mark the screws
for later check.)
1.
Rectify any abnormal
connection.
2.
If the fault persists, contact
Huawei technical support.
