The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2019
Filed:
Dec. 16, 2014
3m Innovative Properties Company, St. Paul, MN (US);
Mark Gravermann, Erkelenz, DE;
Sebastian Eggert, Dusseldorf, DE;
Michael Petry, Dinslaken, DE;
Werner Roehling, Hueckelhoven, DE;
Friedrich A. Busemann, Amelinghausen, DE;
Bernd Schubert, Cologne, DE;
Gerhard Lohmeier, Cologne, DE;
Michael H. Stalder, Uedem, DE;
Jens Weichold, Erkelenz, DE;
Rainer Reeken, Dormagen, DE;
Andreea Sabo, Dusseldorf, DE;
Christian Weinmann, Alsdorf, DE;
Dipankar Ghosh, Oakdale, MN (US);
Myungchan Kang, Woodbury, MN (US);
Christopher D. Sebesta, Austin, TX (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
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.