UPS5000-H-1200 kVA
User Manual (100 kVA Power Modules)
4 User Interface
Issue 01 (2020-07-15)
Copyright © Huawei Technologies Co., Ltd.
127
Retain default settings for
Chg. curr. limiting coef.
and
Cell float voltage
. Only
professional maintenance personnel are allowed to change the settings.
When you set parameters, ensure the following:
Chg. curr. limiting coef.
>
Transfer-to-equalized charging curr. coef.
Single batt. float chg. voltage deviation alarm thres.
and
Single batt. dis. voltage
deviation alarm thres.
are used to check whether the batteries 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 voltage x 100%. The charge/discharge voltage and average voltage are
obtained from the BMU. If no BMU is configured, these two parameters do not need to be
set.
Item
Description
Default
Value
Value Range
Float volt. temp. comp.
If this parameter is set to
Enable
, the float
charging voltage is calibrated based on the battery
temperature when a battery temperature sensor is
connected. The parameter is configurable in any
mode.
Enable
Disable, Enable
Float volt. temp. comp.
coef.(mV/(°C·cell))
Specifies the calibration coefficient during float
charging voltage temperature compensation.
3.3
0.0–6.0
Float chg. temp. comp.
center(°C)
Specifies the reference temperature during float
charging voltage temperature compensation.
25
20–30
Automatic equalized
charging
If this parameter is set to
Enable
, the UPS
automatically changes the battery management
status to equalized charging based on the charge
current and float charging time.
Enable
Disable, Enable
Transfer-to-equalized
charging curr. coef.(C10)
Batteries enter equalized charging state when the
battery currents exceed this parameter value.
0.05
0.02–0.08
SOC to start equalized
charging (%)
If the SOC is lower than the specified value,
batteries start equalized charging.
70
0–100
Scheduled equalized
charging interval(d)
After batteries transfer from equalized charging to
float charging, if the batteries do not discharge,
equalized charging starts only after the float
charging time exceeds
Equalized charging
protection interval
. After equalized charging is
complete, batteries automatically transfer to
equalized charging when the non-equalized
charging time exceeds
Scheduled equalized
charging interval
.
60
30–180
Equalized charging
protection interval(d)
7
0–15
Forced equalized
charging protection
time(h)
When batteries are under float charging or
hibernation for a long time, enable forced
equalized charging for the batteries. When the
forced equalized charging time reaches
Forced
equalized charging protection time
, batteries
automatically transfer to float charging mode.
18
12–24
Max. batt. dis. time(h)
Set the maximum battery discharge time. When
the discharge time reaches this value, the UPS
24
0–48
