Do I need select high rating AC drive for motor?
Actually, it’s no need to use high rating of AC drive than the rating of Induction Motor. AC drives of same rating can protect the motor even better as anybody cannot select high set point for current than the motor rated current. If you will select higher rated AC drive than that of Motor and anybody select current and over load range higher, than the result shall be damage of motor in case of overload. Further you will pay extra money and keep an inherited danger in your circuit. The best design is inherently safe design rather than it shall be made safe by some adjustments.
Always better use a VFD drive of the same motor power. Maybe some derating is needed for temperature above 45°C and for applications installed higher 1.000 m.a.s.l. Usually the derating is 1% every 100mt.
