CT100 series inverters Installation and wiring
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common ground wire, which not only flows into the inverter but also may flow into
other devices via the ground wire, which may lead the leakage circuit breaker,
relay or other devices to malfunction.
Cable leakage current refers to the leakage current flowing through the
distributed capacitance among the output cables of the inverter. The size of the
leakage current is related to the carrier frequency of the inverter, the length of the
motor cable and the cross-sectional area of the cable. The higher the carrier
frequency of the inverter, the longer the motor cable or the larger the
cross-sectional area of the cable, the larger the leakage current.
Method to reduce the leakage current:
Reduce the carrier frequency. When the motor cable is long (50m or above), the
AC reactor or sine wave filter should be installed in the output side of the inverter.
When the motor line is longer, a reactor should be installed at a distance.
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