iBattery 3.0
User Manual
7 Troubleshooting
Issue 07 (2019-12-30)
Copyright © Huawei Technologies Co., Ltd.
67
Figure 7-3
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7.2 Alarm Reference
Table 7-1
Alarm definition
Alarm Name
Alarm
Severity
Possible Cause
Solution
Current bias
Minor
The detected current is
incorrect.
The loop resistance
values of different
battery strings are
inconsistent.
1.
Check that the Hall effect sensor cable is
connected correctly. If the cable is
damaged, replace it.
2.
Check the current detected by the Hall
effect sensor. Prepare the UPS backup
power supply and replace the faulty Hall
effect sensor.
3.
Check the voltage drop from the battery
string to the UPS battery input terminal,
and ensure that the voltage drops from
various battery strings are the same.
Prepare the UPS backup power supply and
replace the cable from the battery string to
the UPS battery input terminal where the
voltage drop is abnormal.
4.
Check that new and old batteries are not
connected in parallel in each battery string.
Mark abnormal battery strings.
SOH exception
Minor
There is a weak battery in
the battery string.
1.
Check that new and old batteries are not
connected in parallel in each battery string.
Mark abnormal battery strings.
2.
Fully charge the battery string and prepare
the UPS backup power supply. Then
perform a capacity test to query the SOH of
the battery string. If the SOH is abnormal,
replace the battery string.
Charging
overcurrent
Minor
A battery string
experiences charge
overcurrent.
1.
Check that the charge current settings
(battery specifications and charge current
limit) on the UPS meet the battery charge
requirements.
2.
Check that new and old batteries are not
connected in parallel in each battery string.
Mark abnormal battery strings.
