发明名称 |
Relay device |
摘要 |
A relay device is disclosed which protects and controls an electric power line by detecting an electrical quantity carried by the electric power line. The relay device includes a rectifying circuit connected to the electric power line. The output of the rectifying circuit is supplied to a peak value holding circuit which stores the peak value of the output of the rectifying device during each predetermined period under control of a resetting pulse. The output of the peak value holding circuit is supplied to a detecting circuit having a predetermined threshold level.
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申请公布号 |
US4370571(A) |
申请公布日期 |
1983.01.25 |
申请号 |
US19800109552 |
申请日期 |
1980.01.04 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
ANDOW, FUMIO;FUJISAWA, NORIO |
分类号 |
H02H3/02;G11C5/14;(IPC1-7):G11C27/02 |
主分类号 |
H02H3/02 |
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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