Method for measuring insulation resistance and device therefor

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage

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G01R 3102

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active

044220340

ABSTRACT:
A method for measuring and supervising an insulation resistance and stray capacitance against ground of a power supply line while the line is active condition. A frequency different from the main supply voltage is applied to the line and this voltage is detected by a coupling transformer and the insulation resistance and the stray capacitance can be obtained by operation work of the measured value.

REFERENCES:
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patent: 3976987 (1976-08-01), Anger
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patent: 4142143 (1979-02-01), Daniel
patent: 4153923 (1979-05-01), Graf
patent: 4179651 (1979-12-01), Vitins
patent: 4206398 (1980-06-01), Janning
patent: 4348708 (1982-09-01), Howell
Kameoka: "Measuring High-Value Capacitors"-hp Journal-Mar. 72.
Maeda: "An Automatic, Precision 1 MHZ Digital LCR Meter" hp Journal-Mar. 74.
Electronics--Jul. 24, 1967-pp. 91-100.

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