Apparatus for testing the insulation of electric wire or cable

Details Apparatus for testing the insulation of electric wire or cable Apparatus for testing the insulation of electric wire or cable

1983-04-20

1985-05-14

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3108

Patent

active

045175101

ABSTRACT:
An insulated wire having one end grounded is passed in an unaltered path through an unconfined stream of water to which an electric potential has been applied. Faults, such as pinholes or voids, in the insulation are detected by a current flowing from a variable voltage power source through the wire to ground. A fault indicator provides a signal responsive to the current flow.
Water is replenished by dripping individual droplets from a faucet into the testing apparatus to establish electrical isolation between the water faucet and the testing apparatus.

REFERENCES:
patent: 2794170 (1957-05-01), Gooding

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