摘要 |
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. |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
GRAVERMANN, MARK;BUSEMANN, FRIEDRICH;SCHUBERT, BERND;LOHMEIER, GERHARD;STALDER, MICHAEL;WEICHOLD, JENS;REEKEN, RAINER;SABO, ANDREEA;WEINMANN, CHRISTIAN;EGGERT, SEBASTIAN;PETRY, MICHAEL;ROEHLING, WERNER |