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A partial discharge is a localized dielectric breakdown of a small portion of a solid or fluid electrical insulation system under high voltage stress, which does not bridge the space between two conductors. PD testing gives an indication of deterioration of the insulation and is an indicator of incipient faults.
Planning and implementation of Partial Discharge testing of medium voltage cables which are intended to supply underwater generators to be interconnected at the Fundy Ocean Research Centre for Energy in Stream Tidal Generating Plant in Parssboro Nova Scotia.