Patent ID: 7081757
Filing Date: 2006-07-25
Classification: G01R,H01F,H01H

Abstract:
1. An apparatus for detecting partial discharge in on-line electrical equipment, the apparatus comprising: (a) a partial discharge detector that, while in use, continuously monitors the electrical equipment and comprises: said RF transducer means being adapted in operation to detect said radio frequency (RF) pulses or waves concurrently with the operation of the ultrasonic transducer means; (b) a support means for the partial discharge detector that is in turn removably mountable to the electrical equipment such that both the ultrasonic transducer means and the RF transducer means are positioned within the equipment and the elongate member extends through the support means to a second end positioned external the equipment; and (c) a signal processing and analyzing means that receives the signals output by both the ultrasonic transducer and the RF transducer means for detecting at least the radio frequency (RF) pulses or waves and provides an output indicative of detection of partial discharge on occurrence of such a discharge.