Method and apparatus for testing surface breakdown of dielectric

Details Method and apparatus for testing surface breakdown of dielectric Method and apparatus for testing surface breakdown of dielectric

1995-05-23

1997-06-10

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

324760, 324554, 438 17, G01R 3118

Patent

active

056380038

ABSTRACT:
An apparatus for testing a dielectric sample for susceptibility to surface electrical failure due to tracking. The apparatus includes an enclosure continuously purged of air-borne contaminants, which eliminates external drafts, and a base disposed within the enclosure for supporting the dielectric sample. A pair of electrodes are operably interconnected with a variable voltage power supply and adapted to engage the dielectric sample on a first side with a mutual separation. A source of water and water borne contaminants intermittently discharges the water and water-borne contaminants in droplet form onto the dielectric test sample between the electrodes.

REFERENCES:
patent: 4339708 (1982-07-01), Saito et al.
patent: 4473795 (1984-09-01), Wood
patent: 4757255 (1988-07-01), Margozzi
patent: 5198752 (1993-03-01), Miyata
patent: 5457389 (1995-10-01), Shibata

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