Huawei UPS5000-E-25K-SM, Руководство пользователя

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UPS5000-E-(25 kVA-75 kVA)-SM
User Manual (Half Height)
2 Overview
Issue 03 (2019-12-13) Copyright © Huawei Technologies Co., Ltd. 30
Silk Screen Description
PARALLEL The PARALLEL port transmits parallel signals. To connect multiple UPSs
in parallel, use parallel cables to connect the parallel ports on the UPSs. N
UPSs require N parallel cables so that two parallel cables are connected to
each UPS, which improves parallel connection reliability.
BSC This port is used in a dual-bus system to balance output frequencies and
phases between UPS systems, ensuring that two buses can switch with
each other. The BSC port processes UPS system communications
information.
Dry Contacts
The dry contacts allow the UPS to manage the battery system including the external battery
switch and battery monitoring unit (BMU). They also allow the UPS to provide alarm signals
for external devices and implement remote emergency power-off (EPO).
Table 2-7 describes
the dry contacts.
Table 2-7 Dry contacts
Silk Screen Description Status
BFP_NO Triggers bypass backfeed
protection. Normally, the COM and NC
dry contacts are closed. If
bypass backfeed occurs, the
COM and NO dry contacts are
closed, opening the bypass
input circuit breaker.
BFP_COM
BFP_NC
/ Reserved N/A
BTG Detects battery grounding
failures. Status:

Closed: battery grounding
failure

Open: no battery
grounding failure
The initial status is Open.
0V Port for signal ground
GEN Detects diesel generator
(D.G.) mode. Status:
 Closed: D.G. mode
 Open: non-D.G. mode
The initial status is Open.
0V Port for signal ground
BCB_OL Detects the battery circuit
breaker (BCB) box. Status:
 Grounded: BCB box
connected
 Floated: BCB box not
connected
The initial status is Grounded.