UPS5000-A-400 kVA
User Manual (50 kVA, PF=0.9)
4 Installation Verification
Issue 03 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
117
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.
Chg. volt. over range point
and
Dis. volt. over range point
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 4-28
Battery Param. screen 1