Patent · US Expired

Compensation current sensor

US6788046B2 · kind B2 · utility

8Cited by

10References

5Claims

0Family size

Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Friedrich Lenhard · Hanau, DE
Stefan Schafer · Aachen, DE

Key dates

Filing date	Nov 21, 2002
Grant date	Sep 7, 2004
Priority date	—
Expiry date	Nov 21, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01R15/185
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a compensation current sensor, comprising a magnet core (M4), with a first section around which a secondary winding (S4) is wound. A magnetic field probe (MS4) is arranged in the vicinity of the secondary winding (S4). A primary winding is magnetically coupled with the secondary winding (S4). A metal screen (A4) is provided at a distance from the magnet core (M4). On the plane, on which the magnet core (M4) lies, the shield (A4) surrounds the magnet core (M4), with the exception of a side opening, whereby part of the opening is in the vicinity of the magnetic field probe (MS4) and arranged and configured such that magnetic flux which passes through the shield (A4), partially passes through the magnetic field probe (MS4).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.