UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
Copyright © Huawei Technologies Co., Ltd.
Bypass Settings
BPM mode
upon BPM
overtemp.
Specifies whether to start bypass
mode when overtemperature
occurs.
Lightload BPM
cur. eql. detect
Enable or disable the light load
bypass current imbalance alarm.
If this parameter is set to Enable,
the load is light (less than 30%
load), and the load rate of a
certain rack is less than 10%, the
system will generate a bypass
current imbalance alarm and
cannot enter the ECO mode. If
this parameter is set to Enable,
the preceding detection is not
performed. Whether the bypass
current is imbalanced does not
affect the ECO bypass mode.
Battery Settings
Battery parameter settings impact battery maintenance, battery lifespan, and UPS discharge
time. When you set battery parameters, note the following:
Retain default settings for Chg. cur. limiting coef. and Cell float voltage. Only
professional maintenance personnel are allowed to change the settings.
When you set parameters, ensure the following: Chg. cur. limiting coef. >
Transfer-to-equalized charging cur. 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 the BMU is not configured, these two parameters do not need
to be set.
If this parameter is set to Enable,
the float voltage is calibrated
based on the battery temperature
when a battery temperature
sensor is connected. The
parameter is configurable in any
mode.
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