Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1984-09-04
1986-09-16
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
324105, 350376, 350378, 356368, G01R 1507, G02F 109
Patent
active
046125000
ABSTRACT:
Apparatus for measuring current in a conductor characterized by a magneto-optical current sensor employing the Faraday effect to measure current in a high voltage transmission line. Polarized light having a predetermined plane of polarization is directed into the sensor which plane of polarization is rotated by magnetic field lines generated by the current in the conductor. A bimetal coil rotates the sensor to achieve temperature stability of the current signal in the temperature range of -40.degree. C. to 140.degree. C.
REFERENCES:
patent: 3784281 (1973-03-01), Kuse
patent: 4563639 (1986-01-01), Langeac
patent: 4564754 (1986-01-01), Sato et al.
Erickson, D., "The Use of Fiber Optics for Communications, Measurement and Control with High Voltage Substations", IEEE Trans., vol. PAS-99, No. 3, May 1980.
Asars Juris A.
Chen Cheng-Lin
Vaerewyck Eugene G.
Baker Stephen M.
Eisenzopf Reinhard J.
Johns L. P.
Westinghouse Electric Corp.
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