发明名称 |
ELECTRICAL DEVICE AND METHOD FOR DETECTING A PHASE LOSS IN AN ELECTRICAL DEVICE |
摘要 |
<p>A method is disclosed for determining a phase failure in an electrical device for driving or monitoring a three-phase AC motor, wherein the electrical device comprises a first, a second and a third line. In order to detect a phase failure in a line in the three-phase electrical device, in particular in a soft starter, the phase failure in the third line is determined by analysing the first and second lines, wherein the analysis includes: determining a value which characterizes a phase shift between a current in the first and second lines, and outputting a signal if the value which has been determined is in a range of values which characterizes a phase failure in the third line.</p> |
申请公布号 |
EP2619599(A1) |
申请公布日期 |
2013.07.31 |
申请号 |
EP20100779545 |
申请日期 |
2010.11.17 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
HERTZ, DIRK;SCHOENENBERG, MARCO;SEITZ, JOHANN;ZITZLER, STEFAN |
分类号 |
G01R19/165;G01R29/18;H02K11/00 |
主分类号 |
G01R19/165 |
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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