Abb Schweiz Ag

Abb Technology Ag

Roman Pernica

Dietmar Gentsch

Wenkai Shang

Michal Skuci

Emil Kalina

Martin Odehnal

Petr Neumann

Pavel Vano

Jozef Bihary

Pavel Hemek

An embedded pole part for medium or high voltage use, with a vacuum interrupter which is embedded into an insulating resin, wherein a current and/or voltage sensor with sensor housing is integrated inside the insulating resin. In order to overcome the problems of the art, and to enhance the accuracy of voltage measurement, a metal grid is implemented into the insulating resin, which is arranged between the sensor housing of the current and/or voltage sensor and the outer surface of the insulating resin.

Embedded pole part for medium or high voltage use, with a vacuum interrupter which is embedded into an insulating resin

Exemplary embodiments are directed to a current transformer having a toroidal magnetic core around which an even number of shielding coils is wound. The shielding coils are operatively associated two by two to form corresponding couples. The shielding coils of each couple are wound on parts of the toroidal magnetic core opposite to each other and are connected in parallel to each other for obtaining a magnetic flux in them. The magnetic flux in a first shielding coil of a couple of shielding coils has an opposite direction with respect to a magnetic flux in a second shielding coil of the couple. The couples of shielding coils are connected in series.

Current transformer

Growing community of inventors

Brno, Czechia

Roman Pernica