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Device for measuring the electrical current

A technology of current measuring device and primary conductor, which is applied in the direction of measuring devices, measuring electricity, and parts of electrical measuring instruments, etc., can solve problems such as difficult handling, and achieve the effect of reducing the overall width and compacting the measuring device

Inactive Publication Date: 2004-08-18
ACTARIS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The different forms of these contact terminals require modification of the structure of the primary conductor, which is rather difficult to handle due to the solid cylindrical shape of the primary conductor

Method used

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  • Device for measuring the electrical current
  • Device for measuring the electrical current
  • Device for measuring the electrical current

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Experimental program
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Embodiment Construction

[0038] figure 1 is a complete schematic diagram of the current measuring device 1 according to the invention.

[0039] The following will refer to figure 2 The device 1 is described in more detail. figure 2 is an exploded schematic view of the same device 1 .

[0040] The device 1 comprises a primary conductor 2 , a secondary coil 6 , a shield 5 and an electrical insulator 4 .

[0041] Such as image 3 As shown, the primary conductor 2 is a flat profile folded into a U shape. For example, at a maximum measuring current of 120 A, the flat profile has a thickness e of approximately 2 mm and a height h of approximately 10 mm. The flat profile is produced, for example, from electrolytic copper.

[0042] The primary conductor 2 comprises a first branch 19 with an end 19A, a second branch 20 with an end 20A and a substantially circular core 16 centered on said central axis C. As shown in FIG.

[0043] The first branch 19 has a 90° twist 13 in the opposite direction of the t...

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Abstract

The device includes a primary conductor (2) having a circular core (16) centered on a central axis C, and first and second branches (19, 20). A secondary winding (6) is arranged between the first and second branches. The primary conductor (2) has flat U-shaped profile. First branch presents an angle of torsion of 90 degrees in one direction, and second branch presents an angle of torsion of 90 degrees in opposite direction.

Description

technical field [0001] The invention relates to a current measuring device. The device is particularly suitable for electrical meters. Background technique [0002] There are various types of current sensors that can be used in electricity meters. Several types of current sensors are described in FR2800167. [0003] In particular, sensors with the Hall effect are known, in which the Hall element is acted upon by a magnetic field generated by a current in a primary coil. The Hall potential measured at the Hall element terminals is proportional to the current flowing through the primary coil. [0004] Another type of known sensor utilizes a transformer with mutual inductance. This type of sensor includes, for example, a primary conductor having a generally U-shaped open-loop shape, and a secondary coil sensitive to a magnetic field wound on a coil placed within the primary conductor. The secondary coil is subjected to the magnetic field generated by the current flowing th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/00G01R15/18
CPCG01R15/18G01R15/181G01R15/183
Inventor 让-路易斯·吉隆
Owner ACTARIS SAS