JPS593733U

JPS593733U - overcurrent relay

Info

Publication number: JPS593733U
Application number: JP5972383U
Authority: JP
Inventors: 弘安藤
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1983-04-20
Filing date: 1983-04-20
Publication date: 1984-01-11

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図及び第２図は従来の過電流継電器の構成を示すブ
ロック図、第３図は本考案の過電流継電器の基本構成を
示すブロック図、第４図は本考案の一実施例を示す過電
流継電器の構成を示すブロック図である。３３・・・限時要素、３４・・・即時要素、３５．３６
・・・整定回路、３７・・・第１の起動回路、３８・・
・第２の起動回路、３９・・・即時回路、４０・・・限
時回路、４２・・・アンド回路、４３・・・補助継電器
、５１゜５２・・・点検用信号入力端子、５３・・・切
替回路、６１．６２，６３，６４，６５．６６・・・点
検用出力端子。Figures 1 and 2 are block diagrams showing the configuration of a conventional overcurrent relay, Figure 3 is a block diagram showing the basic configuration of the overcurrent relay of the present invention, and Figure 4 shows an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of an overcurrent relay. 33... Time-limited element, 34... Immediate element, 35.36
... Setting circuit, 37... First starting circuit, 38...
- Second starting circuit, 39... Immediate circuit, 40... Time limit circuit, 42... AND circuit, 43... Auxiliary relay, 51° 52... Inspection signal input terminal, 53... -Switching circuit, 61.62, 63, 64, 65.66... Output terminal for inspection.

Claims

[Scope of utility model registration request]

A first starting circuit that generates a starting output in response to the output of the first setting circuit that is set to a predetermined value; and a first starting circuit that generates a certain time-limited output in response to the output of the first starting circuit. an immediate element including an immediate circuit that generates an immediate output in response to an output of a second setting circuit that is set to a predetermined value; and a time limiting circuit of the time limiting element. or an OR circuit that outputs the output of the immediate circuit of the time-limiting element, the starting output being added to the time-limiting element and responding to the output of the first setting circuit and having no relation to the time-limiting time. an AND circuit that receives the outputs of the 17 circuits and the outputs of the second starter circuit and generates an on-output when surface input is established; and an auxiliary circuit that is turned on by the output of the AND circuit. A relay, a first starting circuit and a second starting circuit constituting the time limit element, and an inspection signal input terminal provided in the immediate circuit constituting the time limit element and into which an inspection signal is input, An inspection output terminal is provided on the output side of the constituent circuit and generates an inspection signal output in response to an inspection signal input, and the inspection output terminal is inserted between the second starting circuit and the AND circuit and is connected to the inspection output terminal at the time of inspection. An overcurrent relay configured to include a switching circuit that inputs an inspection signal output from a signal input terminal to an AND circuit, and inputs a failure signal output of a second starting circuit to the AND circuit when no inspection is performed.