LEAKAGE TRIPPING DEVICE AND LEAKAGE INTERRUPTER

• Main Authors: OKAMOTO SHINICHI, KONTA YUYA
• Format: Patent
• Language: English; Japanese
• Published: 03.04.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

To provide a leakage tripping device capable of coping with various power supply voltage without increasing size of a tripping coil.SOLUTION: A leakage tripping device 60 comprises: a tripping device 4 containing a tripping coil and a tripping mechanism 4c; and a leakage detection part that detects a leakage of an AC electric path 1, and energizes the tripping coil of the tripping device 4. The tripping coil comprises: a first coil 4a; and a second coil 4b that is serially connected to the first coil 4a, and of which a wire diameter is smaller than that of the first coil 4a. The leakage tripping device 60 comprises: a relay 56 that includes a contact point 56a; and a relay driving circuit. Therein, the relay driving circuit is configured to: detect a voltage of the AC electric path 1; when the voltage detected is larger than a first voltage, open a path of the contact point 56a so as to enable energizing the first coil 4a and the second coil 4b; when the voltage detected is smaller than the first voltage, close the path of the contact point 56a so as to enable energizing the first coil 4a.SELECTED DRAWING: Figure 1 【課題】引外しコイルのサイズを大きくすることなく、幅広い電源電圧に対応可能な漏電引外し装置を得ること。【解決手段】漏電引外し装置６０は、引外しコイルと、引外し機構４ｃと、を有する引外し装置４と、交流電路１の漏電を検出して引外し装置４の引外しコイルを通電する漏電検出部と、を備える。引外しコイルは、第１コイル４ａと、第１コイル４ａに直列接続され、第１コイル４ａより線径が小さな第２コイル４ｂと、を備える。漏電引外し装置６０は、接点５６ａを有するリレー５６と、交流電路１の電圧を検出し、検出された電圧が第１電圧より大きいときは接点５６ａを開路して第１コイル４ａおよび第２コイル４ｂを通電可能とし、検出された電圧が第１電圧より小さいときは接点５６ａを閉路して第１コイル４ａを通電可能とするリレー駆動回路と、を備える。【選択図】図１