发明授权
- 专利标题： Electrical power supply system
- 专利标题（中）： 电源系统
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申请号： US942810申请日： 1992-09-10
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公开(公告)号： US5473494A公开(公告)日： 1995-12-05
- 发明人: Yukio Kurosawa , Youichi Ohshita , Masaru Watanabe , Isao Nishida , Yoshihito Asai , Tokio Yamagiwa
- 申请人： Yukio Kurosawa , Youichi Ohshita , Masaru Watanabe , Isao Nishida , Yoshihito Asai , Tokio Yamagiwa
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-234407 19910913
- 主分类号： H02H7/22
- IPC分类号： H02H7/22 ; H02H9/00 ; H02H9/04 ; H02H3/00
摘要：
An electrical power supply system includes an electrical power source system connected to a bus bar and a plurality of electric power transmission systems each connected via circuit breakers to the bus bar. The supply system has overvoltage suppression equipments each installed between the transmission system and the ground. The overvoltage suppression equipment includes a switching device and an impedance connected to the switching device. The switching device in a sound transmission system is closed when the circuit breaker operates in other faulty transmission system, thereby an overvoltage being occurred on the sound system is effectively suppressed.