NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
262 BU 0200 en-3118
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8.5 Operation on the FI circuit breaker
With SK 2xxE frequency inverters (except 115 V devices), leakage currents of > 40 mA are to be
expected if the mains filter is active. In other words, an FI personal protection circuit breaker must be
avoided if possible.
If the frequency inverter is going to be operated with an FI personal protection circuit breaker, the
leakage currents against PE could be reduced to 10 - 20 mA jumpers. However, the FI loses its
specified interference suppression level because of "operation on IT network".
Only all-current sensitive FI circuit breakers (type B or B+) must be used.
(please see chapter 2.4.2.1 "Mains supply (L1, L2(/N), L3, PE)")
( See also document TI 800_000000003
)
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