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UPS5000-E-(600 kVA-800 kVA)
User Manual
Silk Screen
SWITCH
STATUS_BP
SWITCH
STATUS_0V
SPD
0V
2.4.4 (Optional) Backfeed Protection Card
Energy backfeed may be dangerous for the UPS, loads, and maintenance personnel. When
backfeed occurs, the backfeed protection card triggers alarm signals or quickly disconnects
the backfeed loop. The backfeed protection card uses relay contact signals. The signal ports
support any power signals with a voltage of no more than 240 V AC and a current of less than
4 A. For details, see the UPS Backfeed Protection Card User Manual.
2.4.5 (Optional) Dry Contact Extended Card
The dry contact extended card provides five signal output ports and five signal input ports.
For details, see the UPS Dry Contact Extended Card User Manual.
2.4.6 Monitoring Interface Card
The monitoring interface card provides external ports as well as monitoring and control
functions for the MDU. The ports include the ambient temperature and humidity sensor port,
battery monitoring unit (BMU) port, FE port, battery temperature monitoring port, and
network management port. The MDU monitors the UPS, allows users to set parameters,
delivers commands, reports information, and displays the UPS key information and
parameters on the LCD.
Issue 02 (2016-01-20)
Description
Port for monitoring the
bypass input circuit breaker
Port for secondary side
ground
Port for monitoring the
input AC surge protective
device (SPD)
Port for secondary side
ground
NO is short for normally open, and NC is short for normally closed.
Set the EPO port to NO or NC as required.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Status
Connected: circuit
breaker ON
Disconnected:
circuit breaker
OFF
Connected: SPD
enabled
Disconnected:
SPD disabled
2 Overview
Initial Status
Connected
Connected
26
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