Detecting resistance faults

Details Detecting resistance faults Detecting resistance faults

1985-10-16

1988-02-16

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Current through test material forms test magnetic field

324529, 324559, G01V 311, G01N 2782

Patent

active

047257784

ABSTRACT:
Resistance faults, for example across insulating joints of cathodically protected pipelines may be evaluated by comparing magnetic field strengths associated with a test current of predetermined frequency flowing into and away from the joint.

REFERENCES:
patent: 2479219 (1949-08-01), Drake
patent: 4249126 (1981-02-01), McConell
patent: 4475078 (1984-10-01), Itani

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