Alarm
ID
Alarm
Name
Seve
rity
Clearance
Condition
Trigger
Condition
Impact
on the
Syste
m
Suggestion
41
Lithium
battery
high
voltage
protecti
on
Mino
r
The cell
or battery
string
voltage
drops
below the
protection
threshold.
● The busbar
voltage is
greater than
59.4 V in
charging
state.
● The
maximum
cell voltage is
greater than
3.8 V.
NOTE
Considering
cell
difference,
the
maximum
cell voltage
can be 3.9 V.
● The battery
string
voltage is
greater than
55 V.
The
interna
l
switch
circuit
of the
lithium
battery
is
discon
nected,
and
the
battery
cannot
be
charge
d or
dischar
ged.
Possible cause: The busbar
voltage input is abnormal
and exceeds the normal
range. The cell consistency is
abnormal. The capacity
attenuation is too fast or the
internal resistance is too
large.
Measure: If the lithium
battery cannot be recovered
due to protection against
abnormality, contact local
Huawei engineers to rectify
the fault.
43
Lithium
battery
fault
Mino
r
The alarm
is not
cleared.
After
batteries
are reset,
check the
status
again.
The cell voltage
sampling circuit
is faulty.
The cell
temperature
sampling circuit
is faulty.
The cell voltage
is too high or
too low.
The cell
temperature
increases
abnormally.
The cell voltage
is severely
unbalanced.
BMS board
circuit fault
The
interna
l
switch
circuit
of the
lithium
battery
is
discon
nected,
and
the
battery
cannot
be
charge
d or
dischar
ged.
Possible cause: sampling
fault (see the telecom
power manual); cell or
equalization circuit fault;
charger converter short-
circuit, relay fault; switch
tube fault
Measure: Restart the lithium
battery. If the fault persists,
replace the lithium battery.
UPS2000-G-3KRTLL
User Manual
4 Control Panel
Issue 01 (2020-10-26)
Copyright © Huawei Technologies Co., Ltd.
76