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UPS2000-G-3KRTLL
User Manual
Alarm
Alarm
ID
Name
23
Lithium
battery
low
voltage
protecti
on
24
Lithium
battery
overcur
rent
protecti
on
Issue 01 (2020-10-26)
Seve
Clearance
rity
Condition
Mino
The cell
r
voltage
and
battery
string
voltage
rise above
the
respective
protection
thresholds
.
Mino
The
r
battery
discharge
current
drops
below the
protection
threshold.
Copyright © Huawei Technologies Co., Ltd.
Trigger
Impact
Condition
on the
Syste
m
The lithium
The
battery voltage
interna
is less than 44 V.
l
switch
The minimum
circuit
cell voltage is
of the
less than 2.5 V.
lithium
battery
is
discon
nected,
and
the
battery
cannot
be
charge
d or
dischar
ged.
Discharge
The
current ≥ 0.93
interna
times of the
l
current limit
switch
and Vbus ≤ 40 V
circuit
for 15s
of the
lithium
Discharge
battery
current ≥ 0.98
is
times of the
discon
current limit
nected,
and Vbus < 17 V
and
for 8s
the
battery
cannot
be
charge
d or
dischar
ged.
4 Control Panel
Suggestion
Possible cause: The mains
power has failed and not
been recovered for a long
time. 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.
Possible cause: The UPS is
overloaded. The number of
working batteries is
insufficient.
Measure: Reduce the load.
Add batteries.
68
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