UPS5000-E-(25 kVA-75 kVA)-SM
User Manual (Half Height)
6 Routine Maintenance
Issue 03 (2019-12-13)
Copyright © Huawei Technologies Co., Ltd.
153
Item
Expected Result
Troubleshooting
Float charging voltage: (2.25
V/cell ±1%) x number of
battery cells
1% of the battery string
voltage, check whether the
cable between the battery string
and the UPS is excessively
long, or the cable diameter is
excessively small.
2.
Check whether the equalized
charging voltage and float
charging voltage are correctly
set for the UPS.
3.
If the fault persists, contact
Huawei technical support.
6.2.3 Quarterly Maintenance
Table 6-6
Quarterly maintenance
Item
Expected Result
Troubleshooting
Battery temperature
sensor measurement
accuracy
The difference between the
temperature measured by the
temperature sensor and the
temperature displayed on the
MDU is less than 3°C.
1.
Install the temperature
sensor in the correct
position.
2.
Replace the battery
temperature sensor.
Battery management
parameter settings
The settings of battery
management parameters meet
the requirements in the user
manual.
Set parameters correctly.
Tightness of battery
screws
The location of the signs
marked on battery terminals
indicating tight connections
does not change.
Take photos from multiple
angles and contact Huawei
technical support.
Cables between batteries
No cable deteriorates and the
insulation layer does not
crack.
Replace the faulty cable.
Battery voltage
Equalized charging
voltage: 2.35 V/cell ±0.02
V/cell
Float charging voltage:
2.25 V/cell ±0.02 V/cell
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
