THREE-PHASE AND THREE-WIRE TYPE TWO-DEVICE METERING SYSTEM FOR NEUTRAL GROUNDING CLIENT

摘要

The present invention relates to a three-phase and three-wire type two-device metering method and, more specifically, relates to a three-phase and three-wire type two-device metering system applied to a neutral grounding client grounding a neutral point. To achieve this purpose, the three-phase and three-wire type two-device metering system includes: a transformer; a combined voltage current transformer connected with an A phase line, a B phase line, and a C phase line, and measuring currents to A and C phases among A, B, and C phases; a watt-hour meter performing three-phase and three-wire type metering by using the currents to the A and C phases; and a window type current transformer installed outside the B phase line among the three lines connecting the transformer with the combined voltage current transformer, and measuring a current to the B phase.;COPYRIGHT KIPO 2017