Connecting A Backfeed Protection Card - Huawei UPS5000-H User Manual

UPS5000-H-(1200 kVA-1600 kVA)
User Manual (100 kVA Power Modules)
The figure uses the 1200 kVA UPS as an example.
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6.11 Connecting 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 Connect cables to the backfeed protection card.
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Issue 05 (2021-10-13)
Recommended cable cross-sectional area: 240 mm
Recommended screw: M16
Figure 6-413 Short-circuiting the input N and PE (side view of the 1200 kVA
UPS)
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 the UPS output power supply is used, select a shunt release that matches
the rated voltage based on the voltage system. (Currently, only the 1600 kVA
UPS supports this feature.)
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