Voltage Sensor

US10215778B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Mark Gravermann · Erkelenz, DE
• Sebastian Eggert · Neuss, DE
• Michael Petry · Nittendorf, DE
• Werner Roehling · Neuss, DE
• Friedrich A. Busemann · Munster, DE
• Bernd Schubert · Cologne, DE
• Gerhard Lohmeier · Neuss, DE
• Michael H. Stalder · Neuss, DE
• Jens Weichold · Erkelenz, DE
• Rainer Reeken · Dormagen, DE
• Andreea Sabo · Düsseldorf, DE
• Christian Weinmann · Neuss, DE
• Dipankar Ghosh · Oakdale, US
• Myungchan Kang · Woodbury, US
• Christopher D. Sebesta · Austin, US

Key dates

• Filing date: Dec 16, 2014
• Grant date: Feb 26, 2019
• Expiry date: May 24, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R15/181
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Voltage sensor (1) 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 (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), 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.