Installing A Backfeed Protection Card - Huawei UPS5000-H-1200K-NT User Manual

UPS5000-H-(1200 kVA-1600 kVA)
User Manual (100 kVA Power Module)
Figure 4-421 DO port wiring methods
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4.11.5 Installing a Backfeed Protection Card

Prerequisites
● A backfeed protection card has been configured.
● The backfeed protection card uses relay contact signals and it can connect to
● The backfeed protection card needs to be powered by the UPS output or a
Procedure
Step 1 Install a backfeed protection card.
●
Issue 07 (2022-11-29)
NO TICE
any power signal with a voltage of 240 V AC or less and a current of less than
6 A.
more reliable third-party power supply to ensure that the backfeed protection
card can isolate faults if backfeed faults occur during power supply in battery
mode.
If only the backfeed protection card is configured
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