VARIABLE VOLTAGE / VARIABLE FREQUENCY OPERATED MOTORS

A) Variable torque operation - Standard frame sizes suitable for following specifications

Variable torque operation, Type of application pump/fan/blower

Load torque speed curve parabolic ,Speed range = 10% to 100%

Harmonic contens < 5% & temperature rise limited to class F rise

B) Constant torque operation Frame size suitable for following specifications Speed range 50% to 100%

Temperature rise limited to class F rise Typical applications-Printing,Packaging,Paper industry or as per customer requirement

Frame size logic Double of kW rating