UPS5000-E-(350 kVA-800 kVA)
User Manual (50 kVA Power Modules)
2 Overview
Issue 05 (2018-01-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
37
Silk
Screen
Description
Status
Initial Status
MT
Connected: circuit
breaker OFF
SWITCH
STATUS_
0V
Port for signal ground
SWITCH
STATUS_
BP
Port for monitoring the
bypass input circuit breaker
Connected: circuit
breaker ON
Disconnected:
circuit breaker
OFF
Connected
SWITCH
STATUS_
0V
Port for signal ground
SPD
Port for monitoring the
input AC surge protective
device (SPD)
Connected: SPD
enabled
Disconnected:
SPD disabled
Connected
0V
Port for signal ground
The dry contact interface card takes effect only after it is set on the monitoring system. Set the
unused dry contact signal to the unused status.
Set the EPO port to NO or NC as required.
When multiple UPSs are paralleled, all dry contact signals to be used need to connect to each UPS.
Single cables require dual-insulated twisted cables. If the length of a power cable is within 25–50 m,
its cross-sectional area must be 0.5 mm
2
to 1.5 mm
2
.
Functions
The dry contact card allows the UPS to detect and manage the switch status of the battery
system (including the external battery switch) and implement remote emergency power-off
(EPO).
Specifications
Hot-swappable
0.5 U high
2.3.5.4 Monitoring interface card