Table 4-7 Functions of control signal ports on the dry contact card
Silk Screen
Signal Description
Status
Description
Initial
Status
BTG
Port for monitoring battery
grounding failures
● Closed: There is
a battery
grounding
failure.
● Open: There is
no battery
grounding
failure.
Open
a
0V
Port for signal ground
GEN
Port for detecting the diesel
generator (DG) mode
● Closed: DG
mode
● Open: non-DG
mode
Open
a
0V
Port for signal ground
BCB_OL
Port for monitoring the
battery circuit breaker (BCB)
box
● Grounded: BCB
box connected
● Disconnected:
BCB box not
connected
Grounde
d
BCB_STA
Port for monitoring the BCB
● Closed: The BCB
is ON.
● Open: The BCB
is OFF.
Open
BCB_DRV
Port for controlling BCB trip.
When the voltage is +12 V,
the BCB trips.
● 0 V: BCB not
tripped
● 12 V: BCB
tripped
0 V
BCB_0V
Port for signal ground
EPO_NO
If the NO port is connected
to the EPO_12V port, EPO is
triggered.
Closing the EPO
port triggers EPO.
Open
EPO_12V
+12 V
EPO_NC
If the NC port is
disconnected from the
EPO_12V port, EPO is
triggered.
Opening the EPO
port triggers EPO.
Closed
EPO_12V
+12 V
SWITCH
STATUS_OUT
Port for monitoring the UPS
output circuit breaker
● Closed: The UPS
output circuit
breaker is ON.
● Open: The UPS
output circuit
breaker is OFF.
Closed
a
SWITCH
STATUS_0V
Port for signal ground
UPS5000-H-(400 kVA-800 kVA)
User Manual (100 kVA Power Module)
4 Component Description
Issue 02 (2021-04-22)
Copyright © Huawei Technologies Co., Ltd.
35