Apparatus and method for electrical testing of insulating arm sl

Details Apparatus and method for electrical testing of insulating arm sl Apparatus and method for electrical testing of insulating arm sl

1990-12-13

1991-10-22

Strecker, Gerard R.

Electricity: measuring and testing

For insulation fault of noncircuit elements

73 40, G01R 3116

Patent

active

050599135

ABSTRACT:
This invention relates to an improved arm sleeve testing apparatus and method of testing such tubular sleeves to determine whether any flaws or defects exist in their sidewalls which would permit the conduct of electrical current. The sleeves are sealed at their lower smaller ends by an inflatable sealing member which seals the inner sidewall surfaces in pressure-tight relation within a non-conductive cup-like member. The sleeves are mounted on a vertically-reciprocatable platform in vertical relation over an insulated tank containing a supply of conductive liquid. A second conductive liquid is introduced into the sleeve and an electrical current of predetermined magnitude is passed between the two liquids with the sleeve sidewalls therebetween. Any defects or flaws in the sidewalls permit electrical current flow which is detected by a visual signal or by an audible alarm indicating the sleeve is unsatisfactory for use in handling live power lines, for example.

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patent: 4810971 (1989-03-01), Marable
patent: 4909069 (1990-03-01), Albin et al.

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