REPLACEABLE WATT-HOUR METER AT STATE POWER UNFAILURE

摘要

PURPOSE: An electronic watt-hour-meter having uninterruptible replacement function is provided to miniaturize a size of watt-hour-meter by removing a current terminal block. CONSTITUTION: A main body(100) forms an appearance of en electronic watt-hour-meter which loads a PCB substrate(110), a display device, and a clamp current transformer(120). A current value is measured by drawing an input power line into an output load line. An opening part is formed in an outer part of the main body. A fixing part is folded in one surface of the opening part. The clamp current transformer opens the opening part in replacing the watt-hour-meter, and replaces the watt-hour-meter in an uninterruptible state.