Appendix A Standards Compliance
12
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A.1.8 Solutions to Current Leakage
AC drive outputs high-speed pulse voltage, producing high-frequency leakage current during
running of the 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.
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.
Factors that influence the leakage current are as follows:
●
AC drive capacity
●
Carrier frequency
●
Type and length of motor cable
●
EMI filter
When leakage current causes the circuit-breaker to act, you should:
●
Increase sensitivity current of circuit-breaker.
●
Replace circuit-breaker with a new one with high-frequency suppression function.
●
Reduce carrier frequency.
●
Shorten length of the output cable.
●
Install a current leakage suppression device.
Recommended residual current circuit-breaker manufacturers are Chint Electric and Schneider.
Summary of Contents for GT600-4T132G
Page 1: ...GT600 AC Drive...
Page 5: ......
Page 86: ...5 Quick Setup 5 1 Get Familiar With Operating Panel 86 5 2 Setup Flowchart 87...
Page 87: ......
Page 100: ...5 Quick Setup 98 5...
Page 280: ...8 Peripherals and Options 278 8...
Page 306: ...12 303 11...
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