UPS5000-A-400 kVA
User Manual (50 kVA, PF=0.9)
2 Overview
Issue 03 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
24
2.3.3.3 Dry contact card
Appearance
Figure 2-13
Dry contact card
Table 2-3
Ports on the dry contact card
Silk Screen
Description
Status
Initial Status
BTG
Port for detecting battery
grounding faults
Connected: battery
grounding fault
Disconnected: no
battery grounding
fault
Disconnected
0V
Port for signal ground
GEN
Port for detecting diesel
generator (D.G.) mode
Connected: D.G.
mode
Disconnected:
non-D.G. mode
Disconnected
0V
Port for signal ground
BCB_OL
Port for detecting the BCB
box
Grounded: BCB
box connected
Disconnected:
BCB box not
connected
Grounded
BCB_STA
Port for monitoring the
battery switch
Connected: battery
switch ON
Disconnected:
battery switch
OFF
Disconnected
BCB_DRV
Controls battery circuit
breaker trip. When the
voltage is +12 V, the circuit
breaker trips.
0 V: battery switch
not tripped
12 V: battery
switch tripped
0 V
BCB_0V
Port for signal ground
EPO_NO
Emergency power-off (EPO)
port
If the normally open
(NO) port is
connected to the
EPO_12V port, EPO
Disconnected
EPO_12V
+12 V