Optical current transformer

Details Optical current transformer Optical current transformer

1990-11-05

1991-11-19

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

324107, 324127, G01R 33032, G01R 120

Patent

active

050669036

ABSTRACT:
An optical current transformer, which uses a Faraday cell for detecting the intensity of a magnetic flux induced in a circular iron core, has plural windings having the same number of turns provided on the core in a manner that overall width of the windings are evenly wound along the whole part of the circular iron core, and terminal of the windings having the same polarities are commonly connected by cables.

REFERENCES:
patent: 3324393 (1967-06-01), Casey et al.
patent: 3413055 (1968-11-01), DeSorbo
patent: 4894609 (1990-01-01), Fujiki et al.
"Devel. of Fiber-Optic Voltage Sensors & Magnetic-Field Sensors", T. Mitsui et al., IEEE Trans. on Power Del., vol. PWRD-2, No. 1, pp. 87-93 (Jan. 1987).
"Recent Devel. of Unconventional Instrument Transformers," N. Ohashi et al., CIGRE SC 34, pp. 1-15 (Jun. 1987).

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