A variable speed drive application has been proposed for a crusher feed conveyer on a mineral processing plant. The required speed range is 600 rev/m to 1400 rev/min. The calculated power requirement of the load, reduced to the motor shaft, is 66 kW at 1400 rev/m. The breakaway torque is expected to be 110% of rated torque. The supply voltage is 415 volts, 50 Hz. Select the optimum size and rating of squirrel cage motor and converter for the most cost effective solution