230V Class : 7.5kW / 400V Class: 7.5~15 kW 230V Class : 11~18.5 kW / 400V Class: 18.5~22kW
Disconnect the ground wire of isolated metal plate. Disconnect the ground wire of isolated metal plate.
230V Class : 22kW / 400V Class: 30~55 kW 400V Class: 75 kW and the above
Disconnect the ground wire of isolated metal plate. Disconnect the ground screw below the C/B and ground studs of
isolated metal plate.
• Refer to the recommended wire size table for the appropriate wire to use. The voltage between the power
supply and the input terminals of the inverter may not exceed 2%.
Phase-to-phasevoltagedrop(V)=√3×resistanceofwire(Ω/km)×lengthoflinem)×current×10
-3
.
(km=3280xfeet)/(m=3.28xfeet)
• Reduce the carrier frequency (parameter 11-01) If the cable from the inverter to the motor is over 25m
(82ft). A high-frequency current can be generated by stray capacitance between the cables and result in an
overcurrent trip of the inverter, an increase in leakage current, or an inaccurate current readout.
• To protect peripheral equipment, install fast acting fuses on the input side of the inverter. Refer to section
11.4 for additional information.
Caution
22 VDI100 • Instruction manual
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