Huawei UPS5000-E FM Series User Manual page 141

UPS5000-E-(30 kVA-120 kVA)-FM
User Manual
Item
Forced
equalized
charging
protection
time (h)
Max. batt. dis.
time (h)
Undertemp.
alarm thresh.
(°C)
Overtemp.
alarm thresh.
(°C)
Single batt.
float chg.
voltage
deviation
alarm thres.
(%)
Issue 02 (2020-11-10)
Description
When batteries are
continuously under float
charging or hibernation,
enable forced equalized
charging. When the forced
equalized charging time
reaches the value of this
parameter, batteries
automatically transfer to
float charging mode.
Set the maximum battery
discharge time. When the
discharge time reaches this
value, the UPS powers off.
The battery discharge time
can be set only to 0 hours or
a value only in the range of
16–48 hours. If the time is
set to 0 hours, battery
discharge protection is not
implemented.
Battery temperatures can be
monitored in a timely
manner. If a battery
overtemperature alarm is
detected, the charging
current limit decreases to
0.03 CA. Battery charging
stops if a battery
overtemperature protection
alarm (when the
temperature reaches the high
temperature threshold plus
3°C) is generated.
Single batt. float chg.
voltage deviation alarm
thres. (%) and Single batt.
dis. voltage deviation alarm
thres. (%) are used to check
whether the cells in each
battery string have the same
charge voltage and discharge
voltage. When a value
exceeds the specified range,
an alarm is generated.
The calculation formula is
(Charge/Discharge voltage –
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4 User Interface
Default Value Value Range
18 12–24
24 0–48
–5°C –20°C to +5°C
50°C 35°C to 55°C
10 5–30
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