UPS5000-E-(350 kVA-800 kVA)
User Manual (50 kVA Power Modules)
4 User Interface
Issue 05 (2018-01-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
186
Battery string sharing
is unavailable when
Single/Parallel
is set as
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 may damage the
batteries. An incorrect estimated discharge time may cause 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 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.
Figure 4-42
Battery Param. screen 1
Item
Description
Installation
time
A battery maintenance reminder is displayed when the maintenance time
(counted from the installation time) comes.
Maintenance
period (d)
Specifies the interval for reminding users of battery maintenance. The
value range is 0 to 365. The default value is
0
.
Battery type
Set the battery type based on actual conditions. Currently, only lead-acid
batteries are supported.
Chg. cur.
limiting coef.
(C10)
The charging current limit is a multiple of the battery capacity. The value
can be 0.05–0.15, and is 0.1 by default.
Cell float
voltage
The float voltage value can be 2.23–2.30 V/cell, and is 2.25 V/cell by
default.