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1. (WO2018046513) DEVICE AND METHOD FOR MEASURING THE STRENGTH OF THE CURRENT AN INDIVIDUAL CONDUCTOR OF A MULTI-CONDUCTOR SYSTEM

Pub. No.:    WO/2018/046513    International Application No.:    PCT/EP2017/072285
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Thu Sep 07 01:59:59 CEST 2017
IPC: G01R 15/20
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: GÖTZ, Jürgen
HAIN, Stefan
MEIERHÖFER, Franz
WEISS, Roland
Title: DEVICE AND METHOD FOR MEASURING THE STRENGTH OF THE CURRENT AN INDIVIDUAL CONDUCTOR OF A MULTI-CONDUCTOR SYSTEM
Abstract:
Device and method for measuring the strength of the current of an individual conductor (7) of a multi-conductor system (14). Device (1) and method for measuring a strength of the current in a current conductor (7) of a multi-conductor system (14) having at least two current conductors (7) with at least two field sensors (3, 4), wherein each field sensor (3, 4) is suitable for measuring a magnetic field resulting from a linear combination of the magnetic fields of the individual current conductors (7) and converting them into an electrical signal. In this context, one field sensor (3) is arranged around the multi-conductor system (14) on a first radius (R1), and one field sensor (4) is arranged around the multi-conductor system (14) on a second radius (R2), wherein the first radius (R1) is larger than the second radius (R2). Furthermore, the device (1) comprises a signal evaluation device (8) which is suitable for determining the strength of the current in the current conductor (7) by means of the difference between the signals of the at least two field sensors (3, 4) and by means of at least a first distance (5) or a second distance (6) of the current conductor (7) from one of the field sensors (3, 4).