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1. (WO2017148823) DEVICE FOR NON-CONTACT CURRENT MEASUREMENT

Pub. No.:    WO/2017/148823    International Application No.:    PCT/EP2017/054363
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Feb 25 00:59:59 CET 2017
IPC: G01R 15/20
H02H 1/00
H02H 3/08
Applicants: WÖHNER GMBH & CO. KG ELEKTROTECHNISCHE SYSTEME
Inventors: STEINBERGER, Philipp
STEINER, Daniel
RAU, Maximilian
Title: DEVICE FOR NON-CONTACT CURRENT MEASUREMENT
Abstract:
The invention relates to a device (1) for non-contact current measurement of at least one electric current (I) flowing through a current conductor (3), comprising: a magnetic field shield (2), which surrounds the at least one current conductor (3) annularly, apart from a plurality of uniformly spaced gap regions (4), and shields the enclosed space (5) against external interfering fields, wherein a magnetic field (H) generated by the electric current (I) flowing through the current conductor (3) in the gap regions (4) of the magnetic field shield (2) has linearized field lines having homogenized field strength, and having a plurality of magneto-resistive sensors (6), which are each arranged in the gap regions (4) and which are each suitable to respectively detect the linearized and homogenized magnetic field which exists there and the field strength of which corresponds to the current intensity of the electric current (I) flowing through the current conductor (3).