JPS5995737U

JPS5995737U - Electric switch with open phase protection device

Info

Publication number: JPS5995737U
Application number: JP19249382U
Authority: JP
Inventors: 邦昭近藤; 原　文吾
Original assignee: 三菱電機株式会社
Priority date: 1982-12-18
Filing date: 1982-12-18
Publication date: 1984-06-29

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 drawings]

第１図は従来の欠相保護装置付回路ｔや断器の使用例を
示す回路図、第２図はこの考案の一実施例による欠相保
護装置付回路じゃ、断器の使用例を示す回路図、第３図
は、この考案の他の実施例による欠相保護装置付回路し
ゃ断器の使用例を示す回路図である。図中、ａ、ｂは電圧線、Ｃは１中性線、ｌａ。ｌｂ、ｔｃは電源側端子、２ａ、　　２ｂ、２Ｃは負荷
側端子、３ａ、　３ｂ、　３Ｃ！ｉ内部導体、４ａ、　
４ｂ。４Ｃは接触子、５ａ、　　５ｂ、　　５ｃは入力信号線
、８゛は欠相検出器、９は入力信号部端子である。なお
、各図中、同一符号は同一、又は相当部分を示す。Fig. 1 is a circuit diagram showing an example of the use of a conventional circuit with an open-phase protection device and a circuit breaker, and Fig. 2 is a circuit diagram showing an example of the use of a circuit with an open-phase protection device and a circuit breaker according to an embodiment of this invention. FIG. 3 is a circuit diagram showing an example of the use of a circuit breaker with an open-phase protection device according to another embodiment of the present invention. In the figure, a and b are voltage lines, C is 1 neutral line, and la. lb, tc are power supply side terminals, 2a, 2b, 2C are load side terminals, 3a, 3b, 3C! i internal conductor, 4a,
4b. 4C is a contact, 5a, 5b, 5c are input signal lines, 8' is an open phase detector, and 9 is an input signal section terminal. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

(1) In a single-phase three-wire distribution line having a neutral wire and two voltage wires, a plurality of pairs of power supply side terminals and -load side terminals are connected to at least both types of voltage wires, respectively. , in an electrical switch equipped with internal conductors that connect the above-mentioned power supply side terminals and load side terminals forming each pair, and contacts that interlock with each other to open and close at least each of the above internal conductors, respectively. , has at least three input signal lines, two of which are internally connected to the internal conductor, and the other input signal line is input without being internally connected to the internal conductor. The phase-opening detector is connected to the signal external terminal, and when the neutral wire on the power supply side from the connection point of the neutral wire to which the input signal terminal is connected has an open-phase, the phase-opening detector detects the open-phase. An electrical switch with an open-phase protection device, characterized in that it detects a phase and opens the contactor.

(2) A pair of power supply terminals and load terminals connected to the neutral wire, an internal conductor connecting the power supply terminals and the load terminals, and at least the internal conductor opening and closing in conjunction with the contactor. An electric switch with an open-phase protection device according to claim (1) of the utility model registration, characterized in that the electric switch is equipped with a contactor.