Strommessvorrichtung und Strommessverfahren

Details

Veröffentlichungs-Nr.

EP4768924

Anmeldetag

22. Dezember 2025

Veröffentlichung

1. Juli 2026

Rechtsraum

EP

IPC

G01R15/18, G01R15/20

Abstract

A current measurement device (1) includes a magnetic shield (13) having a notch portion (20) for taking a magnetic field generated by a current flowing through a conductor (MC) to be measured into an internal space; a sensor (14) that is disposed in the internal space of the magnetic shield and outputs a voltage corresponding to a magnetic field at a position where the sensor (14) is disposed; and a circuit unit (12) that detects the current flowing through the conductor (MC) to be measured based on the voltage output from the sensor (14), and the magnetic shield (13) includes a first correction unit (A) that corrects the magnetic field measured by the sensor (14) to reduce influence of magnetic flux density saturation of the magnetic shield, and/or magnetic shield (13) or the circuit unit (12) includes a second correction unit (B) that corrects the voltage output from the sensor to reduce the influence of the magnetic flux density saturation of the magnetic shield (13).

Anmelder

Firma

Yokogawa Electric Corporation

Land

🇯🇵 Japan

Fachgebiete