Quarterly Maintenance - Huawei UPS5000-E-25K-SM User Manual

UPS5000-E-(25 kVA-75 kVA)-SM
User Manual (Half Height)
Item

6.2.3 Quarterly Maintenance

Table 6-6 Quarterly maintenance
Item
Battery temperature
sensor measurement
accuracy
Battery management
parameter settings
Tightness of battery
screws
Cables between batteries
Battery voltage
Issue 03 (2019-12-13)
Expected Result
 Float charging voltage: (2.25
V/cell ± 1%) x number of
battery cells
Expected Result
The difference between the
temperature measured by the
temperature sensor and the
temperature displayed on the
MDU is less than 3° C.
The settings of battery
management parameters meet
the requirements in the user
manual.
The location of the signs
marked on battery terminals
indicating tight connections
does not change.
No cable deteriorates and the
insulation layer does not
crack.

Equalized charging
voltage: 2.35 V/cell ± 0.02
V/cell
 Float charging voltage:
2.25 V/cell ± 0.02 V/cell
Copyright © Huawei Technologies Co., Ltd.
6 Routine Maintenance
Troubleshooting
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.
Troubleshooting
1. Install the temperature
sensor in the correct
position.
2. Replace the battery
temperature sensor.
Set parameters correctly.
Take photos from multiple
angles and contact Huawei
technical support.
Replace the faulty cable.
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
153