Apparatus for controlling the power of the wafer burn-in system

A power control apparatus of a wafer burn-in system is provided to check automatically abnormal states of the wafer burn-in system caused by momentary power failure. An AC power control unit(10) supplies necessary power to each module of a wafer burn-in system. A rectification unit(11) converts AC power to DC power. A power supply unit(12) converts the DC power to rated power and supplies the rated power to each test board. A power control unit(14) monitors abnormal operations of the rectification unit or the power supply unit in order to block or control the power to be applied to the rectification unit or the power supply unit. A blocking unit(13) blocks the AC power received through the power control unit according to a control of the power control unit. A compensation unit(15) compensates the power of the rectification unit, the power supply unit, the power control unit and the blocking unit. The power control unit monitors momentary power failure at a state of momentary power failure by using the power of the compensation unit, and controls an operating state of the power supply unit on the basis of duration of momentary power failure.