ELECTRONIC POWER METER SYSTEM

摘要

PURPOSE: An electronic power meter system is provided to control a maximum demand power by outputting a stop signal and a start signal as to an established load by judging whether a target power value is reached. CONSTITUTION: A detection multiplication part(20) generates a pulse by detecting a current and a voltage. A control calculation part(100) controls a load by accumulating pulses generated from the detection multiplication part. A power supply part(40) supplies power source to the detection multiplication part and the control calculation part. An error detection part(50) detects hardware error and fail of the detection multiplication part and outputs a detected signal to the control calculation part. And the control calculation part includes a target power control part(150) which calculates a maximum demand power measured in the power meter system, and judges whether the target power value is reached and thus outputs a stop signal and a start signal as to the established load.