UPS5000-E-(25 kVA-75 kVA)-BF
User Manual
4 User Interface
Issue 07 (2019-12-13)
Copyright © Huawei Technologies Co., Ltd.
125
Battery parameter settings have great impact on battery maintenance, battery lifespan, and
UPS discharge time. When you set battery parameters, note the following:
Battery string sharing
is unavailable when
Single/Parallel
is
Single
.
Battery string sharing
affects the actual charge current and the estimated discharge time.
An incorrect setting will cause a high or low charge current, which tends to damage
batteries. An incorrect estimated discharge time may lead to a data backup fault.
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
;
Dis. cur. 0.1C EOD
≥
Dis. cur. 0.3C EOD
≥
Dis. cur. 0.5C EOD
≥
Dis. cur. 1.0C EOD
.
Battery type
must meet the actual situation. Currently, only
VRLA batt.
is supported.
Single batt. float chg. voltage deviation alam thres.(%)
and
Single batt. dis. voltage
deviation alam 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, you do not need to set
these two parameters.
Set battery parameters, as shown in
to
Figure 4-37
Battery Param. screen 1