Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent
1985-05-21
1988-01-12
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Using radiant energy
324109, 324458, G01R 3100, G01R 2922, G01R 2912
Patent
active
047194154
ABSTRACT:
For the measurement of the voltage parameters, such as instantaneous value, phase position, absolute value or sign of the high voltage of a high voltage conductor (1), a sensor (15) is conductively connected with a reference electrode and a non-earthed electrode (10) arranged along an equipotential surface in the proximity of the high voltage conductor (1), which electrodes both lie at a defined potential. The reference electrode can be the high voltage conductor (1), a second electrode (50) arranged on an equipotential surface or an auxiliary conductor (57) conductively connected with the high voltage conductor (1). The sensor, which can be a one-sidedly clamped mechanical piezo-oscillator, modulates the brightness of a radiated-in light bundle (32), which is reflected to the measuring device, converted by a receiver (40) into an electrical signal and evaluated. For the testing of the functional capability, an excitation signal, which is independent of the energy of the high voltage conductor, can be transmitted to the sensor (15) for the short-term modulation of the light bundle radiated in. For recognition of the zero position in the presence of a direct voltage at the high voltage conductor, the sensor can be switched free of voltage or reversed in polarity by means of a circuit arrangement which is testable in respect of functional capability.
REFERENCES:
patent: 1438974 (1922-12-01), Wente
patent: 3938039 (1976-02-01), Hermstein et al.
patent: 4370612 (1983-01-01), Puech et al.
patent: 4547729 (1985-10-01), Adolfson et al.
Japanese Patent Abstract, vol. 7, No. 238 (P-231) (1383) Oct. 22, 1983 (1 page), 58-124961.
Review of Scientific Instruments, vol. 47, No. 5, May 1976, pp. 621-623.
Eisenzopf Reinhard J.
MITEC Moderne Industrietechnik GmbH
Nguyen Vinh P.
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