Abstract:A portable partial discharge (PD) measuring system, which uses novel PD sensors and a handhold digital storage oscilloscope (DSO), has been developed and used for on-line assessment and monitoring of the insulation condition of large machines and other apparatus. The PD sensors use high voltage high frequency current transformers (HVHFCT). These are small and non-intrusive and thus can be installed at several positions in a machine terminal withom opening the machine. The DSO is available off-the-shelf at low … Show more
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