Method and apparatus for measuring the insulation resistance of

Details Method and apparatus for measuring the insulation resistance of Method and apparatus for measuring the insulation resistance of

1978-05-30

1980-04-29

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 54, 340649, G01R 3102, G01R 2718

Patent

active

042008352

ABSTRACT:
By introducing a secondary voltage having a lower frequency than the principal voltage in a grounded transmission line system, detecting the current arising from such secondary voltage only and multiplying such current by the magnitude of the secondary voltage a resultant signal is obtained which is proportional to the inverse of the insulation resistance of the system.

REFERENCES:
patent: 2923879 (1960-02-01), Povey
patent: 3678376 (1972-07-01), Jaster et al.
patent: 3710238 (1973-01-01), Peterson
patent: 3774106 (1973-11-01), MacPhee
patent: 3842344 (1974-10-01), Povey
patent: 3866117 (1975-02-01), Erdman
patent: 3891895 (1975-06-01), Wittlinger
patent: 3971007 (1976-07-01), Borkovitz et al.
patent: 3978465 (1976-08-01), Goode
patent: 4066950 (1978-01-01), Rumold et al.
patent: 4112354 (1978-09-01), Bahder et al.

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