公开(公告)号：EP1322971A1

公开(公告)日：2003-07-02

申请号：EP01962464.2

申请日：2001-08-22

申请人： Siemens Limited

发明人： UNSWORTH, Joseph ,  TALLIS, David

IPC分类号： G01R31/02 ,  H01H9/50 ,  H01H33/26 ,  H01F27/00

CPC分类号： G01R31/1209 ,  G01R31/1272 ,  H01F27/402 ,  H01F2027/406 ,  H01H33/26

摘要： An apparatus (10) for detecting the occurence of partial discharge in electrical equipment, such as high voltage transformers. The apparatus comprises a detecting means including an ultrasonic transducer (11) mounted at one end of an electrically insulating elongate rod (13). The ultrasonic transducer (11) is adapted to detect ultrasonic pulses or waves generated by the occurence of a partial discharge in the electrical equipment. A radio frequency (RF) transducer (17) is also utilised to detect radio frequency (RF) pulses or waves also generated by the partial discharge. The rod (13) can be mounted in the wall of the electrical equipment and so provide a mechanism for adjusting the position of the detecting means within the electrical equipment. The apparatus is also removable from the electrical equipment and re-locatable to other equipment.