Dry Contact Card - Huawei UPS5000-E-125 kVA User Manual

UPS5000-E-125 kVA
User Manual (Integrated UPS 3.0, 02291136)
Indicator

2.3.4.3 Dry Contact Card

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).
Figure 2-13 Dry contact card
Table 2-6 Ports on the dry contact card
Silk
Screen
BTG
0 V
GEN
0V
BCB_OL
BCB_STA
BCB_DRV
Issue 01 (2022-09-26)
Color
Description
Port for detecting
battery grounding faults
Port for signal ground
Port for detecting diesel
generator (DG) mode
Port for signal ground
Port for detecting the
BCB box
Port for monitoring the
BCB
Controls BCB trip. When
the voltage is +12 V, the
circuit breaker trips.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Status Description
Off The ECM has no critical alarm or the
software of the ECM is being
upgraded.
Status
● Connected:
battery
grounding fault
● Disconnected:
no battery
grounding fault
● Connected: DG
mode
● Disconnected:
non-DG mode
● Grounded: BCB
box connected
● Disconnected:
BCB box not
connected
● Connected: BCB
ON
● Disconnected:
BCB OFF
● 0 V: BCB not
tripped
2 Overview
Initial Status
Disconnected
Disconnected
Grounded
Disconnected
0 V
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