Huawei UPS5000-E Series User Manual page 47

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
Silk Screen
EPO_12V
EPO_NC
EPO_12V
SWITCH
STATUS_OUT
SWITCH
STATUS_0V
SWITCH
STATUS_MT
SWITCH
STATUS_0V
SWITCH
STATUS_BP
SWITCH
STATUS_0V
SPD
0V
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


Issue 11 (2019-12-20)
Description
+12 V
EPO port
+12 V
Port for monitoring the UPS
output circuit breaker
Port for signal ground
Port for monitoring the
maintenance circuit breaker
Port for signal ground
Port for monitoring the
bypass input circuit breaker
Port for signal ground
Port for monitoring the input
AC surge protective device
(SPD)
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
Hot-swappable
0.5 U high
Copyright © Huawei Technologies Co., Ltd.
Status
connected to the
EPO_12V port, EPO
is triggered.
If the normally closed
(NC) port is
disconnected from the
EPO_12V port, EPO
is triggered.
 Connected: circuit
breaker ON

Disconnected:
circuit breaker
OFF
 Disconnected:
circuit breaker ON

Connected: circuit
breaker OFF
 Connected: circuit
breaker ON

Disconnected:
circuit breaker
OFF
 Connected: SPD
enabled

Disconnected:
SPD disabled
2 2
to 1.5 mm .
2 Overview
Initial Status
Connected
Connected
Disconnected
Connected
Connected
37