3m Innovative Properties Company

Andreea Sabo

Dipankar Ghosh

Myungchan Kang

Mark Gravermann

Christian Weinmann

Michael H Stalder

Bernd Schubert

Gerhard Lohmeier

Friedrich A Busemann

Sebastian Eggert

Jens Weichold

Gunther Stollwerck

Christopher D Sebesta

Rainer Reeken

Michael Petry

Werner Roehling

The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: &#x2022; a carrier element () with a passageway for receiving the power-carrying conductor, &#x2022; wherein the carrier element comprises an electrode () extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein &#x2022; a conductor () of the power cable is operable as the second electrode of the voltage sensing device and wherein &#x2022; the carrier element has a coefficient of thermal expansion that is less than 5&#xd7;10^&#x2212;6 1/K at 20 C.

Voltage sensing device

Voltage sensor () for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.

Voltage Sensor

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Dusseldorf, Germany

Andreea Sabo