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UPS5000-S-1600 kVA
User Manual
Figure 2-28 Ports on the backfeed protection card
Table 2-15 Port description
Port Position
MFP (mains
feedback
protection)
BFP (bypass
feedback
protection)
RSV
(reserved)
Issue 04 (2020-03-03)
Silk Screen
MFP_NO
MFP_COM
MFP_NC
BFP_NO
BFP_COM
BFP_NC
RSV_NO
RSV_COM
RSV_NC
Copyright © Huawei Technologies Co., Ltd.
Description
The MFP ports are the signal ports for the mains
backfeed protection. NO and COM are normally
open contacts. NC and COM are normally closed
contacts. When a backfeed occurs, the normally
open contacts are closed and the normally closed
contacts are open.
The BFP ports are the signal ports for the bypass
backfeed protection. NO and COM are normally
open contacts. NC and COM are normally closed
contacts. When a backfeed occurs, the normally
open contacts are closed and the normally closed
contacts are open.
Reserved
2 Overview
43
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