Huawei UPS5000-H-1200 Series User Manual page 135

UPS5000-H-1200 kVA
User Manual (100 kVA Power Modules)

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
Float volt. temp. comp.
Float volt. temp. comp.
coef.(mV/(° C· cell))
Float chg. temp. comp.
center(° C)
Automatic equalized
charging
Transfer-to-equalized
charging curr. coef.(C10)
SOC to start equalized
charging (%)
Scheduled equalized
charging interval(d)
Equalized charging
protection interval(d)
Forced equalized
charging protection
time(h)
Max. batt. dis. time(h)
Issue 01 (2020-07-15)
Description
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.
Specifies the calibration coefficient during float
charging voltage temperature compensation.
Specifies the reference temperature during float
charging voltage temperature compensation.
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.
Batteries enter equalized charging state when the
battery currents exceed this parameter value.
If the SOC is lower than the specified value,
batteries start equalized charging.
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.
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.
Set the maximum battery discharge time. When
the discharge time reaches this value, the UPS
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4 User Interface
Default Value Range
Value
Enable Disable, Enable
3.3 0.0–6.0
25 20–30
Enable Disable, Enable
0.05 0.02–0.08
70 0–100
60 30–180
7 0–15
18 12–24
24 0–48
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