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Device comprising elements for measuring current and process for manufacturing such a device

A technology of equipment and components, which is applied in the field of equipment containing current measuring components, can solve problems such as defective welding levels and users are in danger, and achieve the effect of improving electrical insulation and increasing volume

Active Publication Date: 2016-08-10
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The user is at risk if a part of the housing is defective at the welding level

Method used

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  • Device comprising elements for measuring current and process for manufacturing such a device
  • Device comprising elements for measuring current and process for manufacturing such a device
  • Device comprising elements for measuring current and process for manufacturing such a device

Examples

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Embodiment Construction

[0024] figure 1 and figure 2 The current sensor 100 represented in includes a current magnetic sensor 30 and a current measuring device 40 assembled in a housing 50 . This is a hybrid current sensor.

[0025] The magnetic sensor 30 includes a first coil 31 wound around a magnetic circuit 33 .

[0026] The measuring device 40 comprises a secondary coil 41 of the Rogowski type arranged such that the first primary circuit of the magnetic sensor 30 corresponds to the second primary circuit of the current measuring device 40 . The Rogowski type coil 41 consists of an insulating carcass 43 on which a metal wire is wound. By way of exemplary embodiment, the body 43 is hollow, circular, composed of magnetic material, rigid or semi-rigid and preferably cylindrical or oval in cross-section. The metal wire wound around the body 43 is preferably composed of copper or a copper-based alloy.

[0027] The housing 50 is provided with a central recess 90 allowing the passage of current co...

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Abstract

A device(100) comprises elements(10,20,30,40) for measuring current, the elements being housed in a casing(50). The casing includes a first portion(51) and a second portion(55,57) made of plastic, welded to each other, which together define a housing(52,53) for receiving the measuring elements. The first portion(51) is opaque in order to absorb a laser beam for welding the portions, and the second portion(57) is transparent in order to let the laser beam pass. The process for manufacturing the device(100) includes a fitting step in which the measuring elements (10,20,30,40) are fitted into the casing(50) and an assembly step in which the portions(51,55,57) of the casing are joined together using a laser welding process.

Description

technical field [0001] The invention relates to a device comprising a current measuring element and to a method for producing such a device. Background technique [0002] The invention relates in particular to a hybrid current sensor comprising a magnetic current sensor with a core-wound magnetic circuit and a current measuring device comprising a Rogowski type coil in a housing. [0003] Current measuring devices of the Rogowski type, such as the current sensor of document EP-A-2 667 205, comprise a support made of magnetic material placed around a current conductor or wire in which the current to be measured flows. A wire is wound on the stent to form the secondary coil. The unit forms a transformer, where the current conductors or wires form the primary coil and the secondary coil supplies the measurement signal. The voltage supplied across the secondary coil terminals is directly proportional to the magnitude of the current flowing through the current conductor or wire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/0092G01R15/181H01F38/30H01F27/02B29L2031/3481B29C65/1612B29C65/1616B29C65/1635B29C66/53461B29C66/542B29C66/543B29C66/7392B29C66/919B23K26/21G01R1/04
Inventor A·奥利维尔D·洛格利斯西M·拉佩奥克斯
Owner SCHNEIDER ELECTRIC IND SAS
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