Huawei UPS5000-E-300K-SMT - Page 165

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
4 User Interface
Issue 02 (2017-02-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
156

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 4-43 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)
The interval (set in days) for when the battery maintenance reminder is
generated (based on installation time).
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 2.23–2.27 V/cell, and is 2.25 V/cell by
default. The value is configurable in any mode.