发明名称 |
CIRCUIT BREAKER |
摘要 |
An electronic circuit breaker is provided with a plurality of air coils, each of which is coupled to a main circuit and an overcurrent signal producing circuit which receives the output of the air coil to output an overcurrent signal when the current through the main circuit exceeds a predetermined value. A current signal simulating an overcurrent in the main circuit is fed from an external testing device into a current signal receiving terminal (CST). A test voltage generating resistor (TVGR) is connected between the CST and ground. The current signal flows through the TVGR to develop a test voltage across the TVGR. Thus, the overcurrent signal producing circuit simulates the overcurrent signal on the basis of the test voltage. <IMAGE> |
申请公布号 |
ZA9101887(B) |
申请公布日期 |
1991.12.24 |
申请号 |
ZA19910001887 |
申请日期 |
1991.03.14 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
KAZUHIRO ISHII;KOUJI HIROTSUNE;ICHIRO ARINOBU;KAZUSHI SATO |
分类号 |
G01R31/00;G01R31/34;H01H73/00;H02H1/00;H02H3/04;H02H3/05;H02H3/08;H02H3/16 |
主分类号 |
G01R31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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