Inovance MD500T75G - Solutions to Current Leakage

MD500 User Manual 13. EMC
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13.8 Solutions to Current Leakage
The AC drive outputs high-speed pulse voltage, producing high-frequency leakage current during running of the AC drive. Each
AC drive produces more than 100 mA leakage current. Therefore, it is necessary to select a residual current circuit-breaker with
rated operating current of 100 mA above.
The AC drive generates DC leakage current in protective conductor. In this case, a time-delay B-type breaker must be used. If
multiple AC drives are required, each AC drive must be installed with a circuit-breaker.
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ƕ AC drive capacity
ƕ Carrier frequency
ƕ Type and length of motor cable
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When the leakage current causes the circuit-breaker to act, you should:
ƕ Increase the sensitivity current of the circuit-breaker.
ƕ Replace the circuit-breaker with a new one with high-frequency suppression function.
ƕ Reduce the carrier frequency.
ƕ Shorten the length of the output cable.
ƕ Install a current leakage suppression device.
The recommended residual current circuit-breaker manufacturers are Chint Electric and Schneider.
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