Patent ID: 6351960
Filing Date: 2002-03-05
Classification: F04B,F25B,H02H

Abstract:
An apparatus for protecting a motor, comprising:an OLP (Over Load Protector) cutting off an AC power source inputted to the motor; an OLP (Over Load Protector) detect unit detecting operation/non-operation of the OLP; a power select unit selecting the AC power from the AC power source after passing through the OLP or AC power from the AC power source without passing through the OLP in accordance with a power select control signal; a CPU (Central Processing Unit) outputting the power select control signal to the power select unit and a driving control signal for driving the motor in accordance with a detect signal from the OLP detect unit; and a SMPS (Switching Mode Power Supply) feeding a driving power to the CPU after receiving the power selected by the power select unit controlled in accordance with the power select control signal outputted from the CPU.