发明公开
- 专利标题： DEVICE AND METHOD RELATING TO PROTECTION OF AN OBJECT AGAINST OVER-CURRENTS COMPRISING OVER-CURRENT REDUCTION
- 专利标题（中）： 装置和方法相对于对象的保护
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申请号： EP97924464.7申请日： 1997-05-27
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公开(公告)号： EP1008219A1公开(公告)日： 2000-06-14
- 发明人: BERNHOFF, Hans , BERGKVIST, Mikael , EKBERG, Mats , ISBERG, Jan , LEIJON, Mats , MING, Li , SUNESSON, Anders , WINDMAR, Dan , BERGGREN, Bertil
- 申请人： ASEA BROWN BOVERI AB
- 申请人地址： 721 78 Västeras SE
- 专利权人： ASEA BROWN BOVERI AB
- 当前专利权人： ASEA BROWN BOVERI AB
- 当前专利权人地址： 721 78 Västeras SE
- 代理机构： Bjerkén, Jarl Hakan
- 优先权： SE9604629 19961217; SE9700335 19970203
- 国际公布： WO9827636 19980625
- 主分类号： H02H9/02
- IPC分类号： H02H9/02
摘要：
This invention is related to a device and a method for protection, in an electric power plant, of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switching device (4) in a line (2) between the object and the network/equipment. The line (2) between the object and the network/equipment is connected to an arrangement (5) reducing over-currents towards the object (1), said arrangement (5) being activatable for over-current reduction with the assistance of an arrangement (11-13) detecting over-current conditions within a time period substantially shorter than the breaktime of the switching device (4).
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