Light load adjusting device of 3-phase integrated power meter

摘要

The present invention relates to a light load adjusting device of a three-phase integrated power meter, and after the light load adjusting piece 12 is press-fitted into the voltage element yoke 11 with the rivet 16, a fixed screw ( 17), the amount of eddy current in the disc 15 is adjusted by moving the light load adjusting piece 12 to the left (+ direction) or to the right (-direction) using a screwdriver. Moving the adjusting piece 12 in the left direction, that is, the positive direction, increases the amount of eddy current in the disc 15, and the light load error appears in the positive direction. The amount of eddy current in the disc 15 becomes small so that the light load error appears in the negative direction. In this way, the present invention has an effect that the parts are structurally simplified, and the light load adjustment is precisely performed. Particularly, the light load adjusting piece 12 is properly press-fitted by the voltage element yoke 11 and the rivet 16. This is to improve reliability because the flow is not generated at all and is firmly fixed.