Huawei UPS5000-E Series - Page 47

UPS5000-E-(50 kVA-300 kVA)
User Manual (50 kVA Power Modules)
2 Overview
Issue 11 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
37
Silk Screen
Description
Status
Initial Status
EPO_12V
+12 V
connected to the
EPO_12V port, EPO
is triggered.
EPO_NC
EPO port
If the normally closed
(NC) port is
disconnected from the
EPO_12V port, EPO
is triggered.
Connected
EPO_12V
+12 V
SWITCH
STATUS_OUT
Port for monitoring the UPS
output circuit breaker

Connected: circuit
breaker ON

Disconnected:
circuit breaker
OFF
Connected
SWITCH
STATUS_0V
Port for signal ground
SWITCH
STATUS_MT
Port for monitoring the
maintenance circuit breaker

Disconnected:
circuit breaker ON

Connected: circuit
breaker OFF
Disconnected
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