3-17
200V: 50HP/ 400V: 100HP and the above/690V: 100HP
Caution
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-phase voltage drop (V) =
3 ×resistance of wire (Ω/km) × length of line m)
× current×10
-3
.
(km=3280 x feet) / (m=3.28 x feet )
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.
Disconnect the ground screw below the C/B and ground studs of
isolated metal plate.
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