JPS6188439U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例の系統図、第２図は
同実施例における地絡継電器ＤＧＲ内の論理判定
回路を示すブロツク図、第３図は従来例の系統図
である。 FIG. 1 is a system diagram of an embodiment of the present invention, FIG. 2 is a block diagram showing a logic determination circuit in a ground fault relay DGR in the same embodiment, and FIG. 3 is a system diagram of a conventional example.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 高圧受電端の電源側に第１の零相変流器を設置
し、負荷側の各分岐線にも夫々第２の零相変流器
を設置し、上記各零相変流器の出力を整流直流化
する整流回路とこれらの整流出力から最大のもの
を検索する論理回路を備え、各分岐線における第
２の零相変流器に対応する整流器の一つが最大出
力を与えたときは、その分岐線に設けられたしや
断器を作動させるようにした地絡方向継電器。 A first zero-phase current transformer is installed on the power supply side of the high-voltage receiving end, and a second zero-phase current transformer is also installed on each branch line on the load side, and the output of each of the above zero-phase current transformers is It is equipped with a rectifier circuit that converts rectification into direct current and a logic circuit that searches for the maximum output from these rectified outputs, and when one of the rectifiers corresponding to the second zero-phase current transformer in each branch line gives the maximum output, A ground-fault directional relay that activates a breakout switch installed on the branch line.