Huawei UPS5000-A-400 kVA User Manual page 211

UPS5000-A-400 kVA
User Manual (50 kVA, PF=0.9)
Alarm ID Alarm Name
(Alarm ID-
Cause ID)
0020-1 Battery connected
reversely
0021-1 Battery EOD
0022-1 No battery
0025-1 Battery
overvoltage
0026-1 Low battery
voltage
Issue 03 (2020-01-10)
Severity Cause
Critical Batteries are not properly
installed.
Critical The battery voltage
reaches the EOD voltage
threshold due to
continuous discharge.
Minor  There is no battery
string.
 The battery string is
not properly installed.
 The power unit
battery fuse is blown.
Minor  The configured
number of batteries is
less than the actual
number.
 The battery neutral
wire is not installed
properly.

Minor Battery discharge
results in low battery
voltage.
 The battery neutral
wire is not installed
properly.
 The charger is faulty.
Copyright © Huawei Technologies Co., Ltd.
B Alarm List
Solution
distribution system is
normal.
1. Check whether battery
polarities are correctly
installed by using a
multimeter. If no,
correct the installation.
2. Check whether the
battery input voltage of
the UPS is normal. If
yes, the battery
sampling circuit of the
power unit is faulty.
Replace the power unit.
If the BCB box is
configured, check whether
the BCB box trips. If it
trips, close the BCB box
switch.
1. Check that battery
cables are correctly
connected.
2. Check that the battery
terminal voltage is
normal.
3. Check that the battery
fuse in the power unit is
intact.
1. Check whether battery
parameters are correctly
set.
2. If they are correctly set,
certain batteries may be
faulty.
3. Check whether the
battery neutral wire is
correctly connected.
1. If the low battery
voltage alarm is
generated in battery
mode, check whether
the mains voltage
recovers. If yes, charge
batteries immediately.
2. Check whether the
battery neutral wire is
correctly connected.
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