open-phase relayとは 意味・読み方・使い方

A ground fault overvoltage relay 5 is connected to an open-Δ-connected tertiary winding of a transformer 18 for a gauge, operates when the zero-phase voltage of a main circuit conductor 11 becomes a predetermined value or more during startup, and opens the main breaker 11 and stops power supply to protect the generator against ground fault.例文帳に追加

地絡過電圧継電器５は、計器用変圧器１８のオープンΔ結線された３次巻線に接続され、起動中に主回路導体１１の零相電圧が所定値以上になると動作し、主遮断器１１を開路して、電力供給を停止し発電機の地絡保護を行う。 - 特許庁

In the invention, when a ground voltage is detected through a limiting resistor 17A and a ground overvoltage relay 12 in the tertiary open delta circuit 10C of a transformer 10 for grounded instruments, the switching circuit 18 is closed to form a low impedance circuit 17 so that the ground fault current i1 flowing in the distribution line is detected by a transformer 5, thereby omitting a zero-phase transformer.例文帳に追加

本発明では接地形計器用変圧器１０の３次オープンデルタ回路１０Ｃに制限抵抗１７Ａ及び地絡過電圧継電器１２により地絡電圧を検出すると、切替回路１８を閉じて低インピーダンス回路１７として、配線線２を流れる地絡電流ｉ１を変流器５で検出するようにして零相変流器を省略する。 - 特許庁