发明名称 |
A method and an apparatus for controlling an electric switching device |
摘要 |
<p>An apparatus for controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave.</p> |
申请公布号 |
EP1933346(B1) |
申请公布日期 |
2009.10.21 |
申请号 |
EP20080101936 |
申请日期 |
2001.06.07 |
申请人 |
ABB AB |
发明人 |
LARSSON, PER;BACKMAN, MAGNUS;JONSSON, LARS |
分类号 |
H01H9/54;H01H33/59;H01H9/56;H01H33/00 |
主分类号 |
H01H9/54 |
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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