Magneto-optical high voltage current measuring transducer
AssigneeSiemens Aktiengesellschaft
InventorsHauke Harms, Ernst Feldtkeller
Life of this patent
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Abstract
A magneto-optical measuring transducer for measuring high voltage currents with a measurement sensing device which carries high voltage potential and is designed as a light conducting coil, with which linearly polarized light is rotated with respect to its polarization direction, in dependence upon the strength of a magnetic field produced by the current to be measured, the light conducting coil being in the form of elements, which lie in respective planes of curvature disposed at right angles to one another, with such elements following one another in the propagation direction of the linearly polarized light.
Claims11
A magneto-optical transducer for measuring high-voltage currents carried by a high-voltage conductor, comprising a measuring sensing device having a light-conducting coil means formed by a light-transmitting conductor, said coil means being divided into a plurality of similar coil elements, each of which is less in circumferential length than a single complete coil turn of said light-transmitting conductor, each of said elements being disposed in a plane of curvature extending at right angles to the plane of an adjacent element, with such elements following one another in the propagation direction of the linearly polarized light, said coil means being so disposed, with respect to such a high-voltage conductor, that it will be positioned in the magnetic field created by current flowing therein, whereby linearly polarized light, supplied to the light-transmitting conductor, will have the polarization plane thereof rotated in dependence upon the strength of said magnetic field.
Dependencies are inferred from the claim text.