
UPS2000-G-(3 kVA-20 kVA)-V2
User Manual (Two Live Wires)
7 Routine Maintenance
Issue 07 (2019-12-19)
Copyright © Huawei Technologies Co., Ltd.
93
Item
Expected Result
Measures
Maintenance Interval
batteries
the insulation layer does
not crack.
Battery volta
Equalized charging
voltage: 14.1 V ± 0.1
V
Float charging
voltage: 13.5 V ± 0.1
V
1.
Check whether the
equalized charging
voltage and float charging
voltage 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.
Quarterly
Shallow
discharge test
(recommended)
Conduct a shallow
discharge test when the
UPS is backed up to
verify that the batteries
can discharge normally.
1.
Locate the cause when an
exception is identified.
2.
If the fault persists,
contact Huawei technical
support.
Quarterly
Capacity Test
(recommended)
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.
Yearly
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
1.
Rectify any abnormal
connection.
2.
If the fault persists,
contact Huawei technical
support.
Yearly