Patent ID: 6181139
Filing Date: 2001-01-30
Classification: G01R

Abstract:
A method of touch-free testing of electrical insulation of an electrical conductor comprising:continuously moving an insulated electrical conductor through an array of testing electrodes including at least one pair of spaced apart testing electrodes which are separated by a solid insulator extending along at least one of the at least one pair of spaced apart testing electrodes and the electrical conductor in a zone of testing which prevents puncture and sparking between the at least one pair of testing electrodes during testing of the electrical insulation of the electrical conductor;producing with a voltage generator, which applies a voltage from the voltage generator to the array of testing electrodes, a continuous corona which contacts the moving electrical conductor;causing an electrical current flow through any defects in the insulation and the continuous corona; andmeasuring the electrical current flow through the defects in the insulation and the corona.