发明名称 |
SYNCHRONOUS SWITCHING APPARATUS FOR USE WITH A MULSYNCHRONOUS SWITCHGEAR APPARATUS FOR USE WITH A MULTIPLE PHASE POWER SYSTEM TIPLE PHASE POWER SYS TEM |
摘要 |
A synchronous switching apparatus for detecting a source voltage of each phase to close each phase at an electrical phase angle predetermined for each phase, including switching devices 1a-1c provided one for each phase for opening and closing an impedance load, switching devices 2a-2c for closing and opening the switching devices 1a-1c for each phase, measuring transformers 5a-5c for measuring source voltages of the respective phases and phase-to-phase voltages, and phase control devices 42 each for issuing a command for energizing the impedance load at an electrical phase angle in a range predetermined for each phase, when detecting a zero point of a source voltage of each phase or a zero point of each phase-to- phase voltage.
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申请公布号 |
CA2298583(C) |
申请公布日期 |
2004.08.31 |
申请号 |
CA19982298583 |
申请日期 |
1998.07.16 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
HIDAKA, MIKIO;ITO, HIROKI;KOHYAMA, HARUHIKO |
分类号 |
H01H9/56;(IPC1-7):H01H33/59 |
主分类号 |
H01H9/56 |
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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