NETYS RT Hot Swap 7 - 11 kVA - 551574B - SOCOMEC
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EN
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Backfeed Protection:
When the UPS runs in battery mode or during AC power failure, the UPS’s inner
voltage or energy might be fed back to the input terminals, either directly or via
a leakage loop. To avoid the risk of electric shock resulting from the backfeed,
installing a backfeed protection device between the AC input and the UPS is highly
recommended.
The UPS doesn’t have any built-in backfeed protection device. Installation
of the backfeed protection device between the AC input and the UPS is
highly recommended.
If there is no backfeed protection device installed between the AC input
and the UPS, please:
1) attach a warning label on the switch or breaker that controls the AC
power supply to the UPS,
2) check if any hazardous voltage exists on any terminals connected to the
AC power. The warning label shall carry the following wording or equivalent.
Before Working on This Circuit
-Isolate Uninterruptible Power System (UPS)
-Then check for Hazardous Voltage between all terminals
including the protective earth.
Risk of Voltage Backfeed
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