JPS5925924U

JPS5925924U - resistor protection device

Info

Publication number: JPS5925924U
Application number: JP12260582U
Authority: JP
Inventors: 牧　美好
Original assignee: 三菱電機株式会社
Priority date: 1982-08-09
Filing date: 1982-08-09
Publication date: 1984-02-17

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図は電気車の一般的主回路結線図、第２図は従来の
ものの要部斜視図、第３図は同じく他のものの要部正面
図、第４図はこの考案の一実施例の結線図である。１・・・パンタグラフ、−２・・・断流器、２ａ・・・
コイル、３ａ、　　３ｂ、　　３ｃ・・・抵抗短絡スイ
ッチ、４・・・主抵抗器、１１・・・電流検出器、１２
・・・電圧検出器、１３・・・温度検出器、１４・・・
指令回路、１４ａ・・・接点、１５・・・絶縁アンプ。なお、各図中、同一符号は同−又は相当部分を示す。Fig. 1 is a general main circuit connection diagram of an electric vehicle, Fig. 2 is a perspective view of the main parts of a conventional one, Fig. 3 is a front view of the main parts of another one, and Fig. 4 is an embodiment of the present invention. It is a wiring diagram. 1... Pantograph, -2... Breaker, 2a...
Coil, 3a, 3b, 3c...Resistance short circuit switch, 4...Main resistor, 11...Current detector, 12
... Voltage detector, 13... Temperature detector, 14...
Command circuit, 14a... Contact, 15... Insulated amplifier. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) A temperature detector that includes a voltage detector and a current detector that detect the voltage and current of the resistor and counts the temperature of the resistor from the resistance temperature coefficient of the resistor and the detected voltage and current;
A resistor protection device comprising: a command circuit that interrupts a circuit of the resistor in response to a signal from the temperature detector.

(2) The resistor protection device according to claim 1, wherein the command circuit operates a current interrupter connected to the resistor.