JPS60151232U

JPS60151232U - short circuit protection relay

Info

Publication number: JPS60151232U
Application number: JP3946284U
Authority: JP
Inventors: 宮崎　治
Original assignee: 三菱電機株式会社
Priority date: 1984-03-19
Filing date: 1984-03-19
Publication date: 1985-10-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の短絡保護継電器の構成図、第２図は系統
短絡時のＣＴ２次出力出力波形す波形図、第３図はこの
考案による短絡保護継電器の一実施例を示す構成図、第
４図はその動作を示す説明図である。１．３１・・・短絡保護継電器、２・・・反限時要素、
３・・・瞬時要素、４・・・変流器（ｃＴ）、５・・・
母線、３２・・・整流平滑回路。なお、図中、同一符号
は同−又は相当部分を示す。Fig. 1 is a block diagram of a conventional short-circuit protection relay, Fig. 2 is a waveform diagram of the CT secondary output waveform at the time of a system short circuit, and Fig. 3 is a block diagram showing an embodiment of the short-circuit protection relay according to this invention. FIG. 4 is an explanatory diagram showing the operation. 1.31... Short circuit protection relay, 2... Anti-time element,
3... Instantaneous element, 4... Current transformer (cT), 5...
Bus bar, 32... rectifier smoothing circuit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

1. A short-circuit protective relay in which a current is input from a current transformer, passes through an inverse time-limiting element, and then an instantaneous element is provided, the short-circuit protective relay comprising a rectifying and smoothing circuit between the inverse time-limiting element and the instantaneous element.