Huawei UPS5000-E Series User Manual page 193

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
Item
charging
protection
interval (d)
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.
(%)
Single batt.
dis. voltage
deviation
alarm thres.
(%)
Issue 11 (2019-12-20)
Description
charging protection interval.
After equalized charging is
complete, scheduled equalized
charging starts when the
non-equalized charging time
exceeds Scheduled equalized
charging interval.
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 –
Average voltage)/Average
Copyright © Huawei Technologies Co., Ltd.
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
20 10–30
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