发明名称 |
Four-pole circuit breaker. |
摘要 |
<p>In a four-pole circuit breaker having U, V, W and N poles for protection of corresponding phases, only an N phase signal, which is reproduced by a current signal reproducing circuit in response to a current flowing through an N phase line, is amplified by a rated current reducing circuit and supplied to a maximum phase signal selection circuit together with other phase signals. <IMAGE></p> |
申请公布号 |
EP0446951(A2) |
申请公布日期 |
1991.09.18 |
申请号 |
EP19910104064 |
申请日期 |
1991.03.15 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
ISHII, KAZUHIRO, C/O MITSUBISHI DENKI K.K.;HIROTSUNE, KOUJI, C/O MITSUBISHI DENKI K.K.;ARINOBU, ICHIRO, C/O MITSUBISHI DENKI K.K.;SATO, KAZUSHI, C/O MITSUBISHI DENKI ENGINEERING KK |
分类号 |
G01R19/165;G01R31/327;G01R31/333;H01H9/54;H02H1/04;H02H1/06;H02H3/00;H02H3/04;H02H3/08;H02H3/093;H02H3/10 |
主分类号 |
G01R19/165 |
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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