Huawei UPS5000-A User Manual page 34

UPS5000-A-(60 kVA-120 kVA)-H
User Manual
Others
Table 2-6
Issue 05 (2020-01-10)
Silk Screen
BCB_0V
BCB_DRV
SWITCH STATUS_OUT
SWITCH STATUS_0V
SWITCH STATUS_MT
SWITCH STATUS_0V
SWITCH STATUS_BP
SWITCH STATUS_0V
EPO_12V
EPO_NO
 NO is short for normally open, and NC is short for normally closed.

When the dry contact signal cable of an external device connects to UPS dry contacts, ensure that
the silk screen names of the dry contacts at both ends of the cable match with each other.
describes other control signal ports.
Copyright © Huawei Technologies Co., Ltd.
Description
Port for signal ground
Controls the trip of the
battery switch in the BCB
box.
Monitors the UPS output
circuit breaker on the output
power distribution cabinet
(PDC).
Port for signal ground
Monitors the maintenance
circuit breaker on the output
PDC.
Port for signal ground
Monitors the bypass input
circuit breaker on the input
PDC.
Port for signal ground
12 V power supply
Triggers EPO.
2 Overview
Status
 Open: battery circuit
breaker OFF
The initial status is Open.
N/A
Voltage:
 0 V: battery switch not
tripped
 12 V: battery switch
tripped
The initial port voltage is 0 V.
Status:
 Open: circuit breaker OFF
 Closed: circuit breaker ON
The initial status is Closed.
N/A
Status:
 Open: circuit breaker ON
 Closed: circuit breaker
OFF
The initial status is Open.
N/A
Status:
 Open: circuit breaker OFF
 Closed: circuit breaker ON
The initial status is Closed.
N/A
N/A
The initial status is Open.
EPO is triggered if the dry
contact is closed.
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