Installing A Backfeed Protection Card - Huawei UPS5000-H-1200 kVA-NTN Quick Manual

UPS5000-H-1200 kVA-NTN
Quick Guide (480 V, 100 kVA Power Modules)
Step 2 Connect cables to DO ports in either of the following ways.
Figure 1-125 DO port wiring methods
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1.11.4 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 01 (2023-03-20)
Figure 1-124 Position of the dry contact extended card
(1) Dry contact extended card
NO TE
DOs transmit passive dry contact output signals. Users need to connect an external power
supply to DOs. The maximum voltage and current of the external power supply are 30 V
DC/1 A.
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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1 Installation and Cable Connection
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