Installing A Backfeed Protection Card - Huawei UPS5000-H-800 kVA-NTN Quick Manual

UPS5000-H-800 kVA-NTN
Quick Guide (480 V, 100 kVA Power Modules)
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Step 2 Connect cables to DO ports in either of the following ways.
Figure 1-78 DO port wiring methods
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1.11.4 Installing a Backfeed Protection Card

If a backfeed protection card has been configured, perform the following steps to
install it.
Issue 01 (2023-03-20)
Figure 1-76 Installing a dry contact extended card
If both a backfeed protection card and a dry contact extended card are
configured (An ECM expansion subrack is required, which is installed before
delivery.)
Figure 1-77 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.
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1 Installation and Cable Connection
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