Huawei UPS5000-E-FM Series User Manual page 146

UPS5000-E-(25 kVA-125 kVA)-FM
User Manual
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Dry Contact Settings
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Specify dry contact settings on the following cards:
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Set the dry contact parameters, as shown in
Figure 4-46 Dry Contacts screen 1
Issue 06 (2019-12-13)
Single batt. float chg. voltage deviation alam thres.(%) and Single batt. dis. voltage
deviation alam thres.(%)
Single batt. float chg. voltage deviation alam thres.(%) and Single batt. dis. voltage
deviation alam thres.(%) are used to check whether the cells 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%.
Set only the dry contacts that are needed. Otherwise, the UPS may not run properly.
When a dry contact card is disabled, its dry contact signals are disabled.
After a dry contact card is enabled, its dry contact signals can be displayed on the LCD.
Disable all the dry contacts for a dry contact card that is not connected and all the dry
contacts that are not used to prevent false alarms.
( ) encloses a unit, and [ ] encloses silk screen.
Dry contact card (MUE05A): provides dry contact signals for the battery grounding
failure detector, D.G., BCB box, and PDCs.
Backfeed protection board (MUE06A): provides backfeed protection signals. This board
can be enabled or disabled.
Monitoring interface card (MUS05A): provides four routes of configurable output dry
contact signals.
Dry contact extended card (MUE07A): provides two routes of input signals and one
route of output signals.
Copyright © Huawei Technologies Co., Ltd.
Figure 4-46 to Figure 4-52.
4 User Interface
137