Method of testing gas insulated systems for the presence of cond

Details Method of testing gas insulated systems for the presence of cond Method of testing gas insulated systems for the presence of cond

1977-06-29

1979-01-16

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

174 17GF, 174 25G, 252372, G01R 3112, G01R 3100, C01B 200

Patent

active

041351304

ABSTRACT:
A method of testing a gas insulated system for the presence of conducting particles. The method includes inserting a gaseous mixture comprising about 98 volume percent nitrogen and about 2 volume percent sulfur hexafluoride into the gas insulated system at a pressure greater than 60 lb./sq. in. gauge, and then applying a test voltage to the system. If particles are present within the system, the gaseous mixture will break down, providing an indicator of the presence of the particles.

REFERENCES:
patent: 2853540 (1958-09-01), Camilli et al.
patent: 3281521 (1966-10-01), Wilson
patent: 3515939 (1970-06-01), Trump
patent: 3792188 (1974-02-01), Cronin
Mulcahy et al., A Review of Insulation Breakdown and Switching in Gas Insulation, Insulation/Circuits, Aug. 1970, pp. 55-61.

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