Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1998-06-05
2000-10-03
Patidar, Jay
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
324117R, 324753, 359257, G01R 3100
Patent
active
061278173
ABSTRACT:
An electro-optic voltage sensor comprises a voltage divider connected to an electric line and to ground and having two insulative compartments separated by an intermediate electrode connected to a Pockels cell. The intermediate electrode supplies to the Pockels cell a reduced voltage derived from the voltage supplied by the electric line to the voltage divider. Each insulative compartment comprises a homogeneous dielectric block with a thickness dependent on the division ratio of the voltage divider. The electro-optic voltage sensor has a very high safety level vis a vis the risk of strong short-circuits combined with mechanical and thermal stability guaranteeing great accuracy of operation and great reliability without special maintenance requirements.
REFERENCES:
patent: 5559442 (1996-09-01), Peier et al.
patent: 5635831 (1997-06-01), Englund
Patent Abstracts of Japan, vol. 007, No. 270 (P-240) Dec. 2, 1983 corresponding to JP 58 150869 A (Tokyo Shibaura Denki KK) Sep. 7, 1983.
Patent Abstracts of Japan, vol. 015, No. 419 (E-1126), Oct. 24, 1991 corresponding to JP 03 175606 A (Mitsvbishi Electric Corp) Jul. 30, 1991.
Patent Abstracts of Japan, vol. 018, No. 045 (P-1681), Jan. 24, 1994 corresponding to JP 05 273256 A (Furukawa Electric Co Ltd) Oct. 22, 1993.
GEC Alsthom T&D Balteau
Patidar Jay
Zaveri S.
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