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Magnetic field sensor arrangement and current transducer therewith

A magnetic field sensor and magnetic field technology, which is applied to the outer casing of the magnetic sensor, the measuring device, and the current-only measurement, can solve the problems of affecting the magnetic properties of the material, reducing the magnetic properties of the magnetic circuit, and achieving easy assembly and high magnetic permeability. Effect

Active Publication Date: 2016-11-09
莱姆电子(中国)有限公司
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Problems solved by technology

However, the operation of materials with high magnetic permeability can affect the magnetic properties of the material, especially by reducing the magnetic permeability of the material, and thus adversely affect the magnetic properties of the magnetic circuit

Method used

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  • Magnetic field sensor arrangement and current transducer therewith
  • Magnetic field sensor arrangement and current transducer therewith
  • Magnetic field sensor arrangement and current transducer therewith

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Embodiment Construction

[0035] Referring to the drawings, a current converter 1 includes a magnetic circuit 2 and a magnetic field sensing device 3 . The magnetic circuit 2 comprises a toroidal core 4 with a gap 6 (often also referred to as an "air gap", although it may not be filled with air). A gap 6 is formed between opposite end faces 12 of the magnetic core 4 . The magnetic core 4 is made of a material with high magnetic permeability known in the art, for example, the material includes FeSi alloy or FeNi alloy. The central channel 9 of the magnetic core is configured to receive one or more primary conductors carrying one or more currents to be measured flowing therethrough.

[0036] In the illustrated embodiment, the magnetic field sensing device 3 includes a magnetic field detector 5 , a circuit board 7 , a housing 10 and a grounding device 8 . In a variation (not shown), the magnetic field sensing device may be constructed without a circuit board, but instead includes a connector to an exter...

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Abstract

A magnetic field sensor arrangement is disclosed and is used for positioning in a gap formed between end faces (12) of a magnetic core (4). The magnetic field sensor arrangement comprises a magnetic field detector (5), a housing (10), and a grounding device (8), the magnetic field sensor and grounding device being mounted to the housing. The grounding device comprises at least one contact (20) elastically supported and configured for electrical contact with the magnetic core. The elastically supported contact is mounted adjacent a sensing portion of the magnetic field sensor and configured for insertion in the magnetic circuit core gap such that the contact elastically biases against the end face of the magnetic core.

Description

technical field [0001] The invention relates to a magnetic field sensor device for positioning in a gap of a magnetic circuit, in particular a current converter, comprising a grounding part for grounding the magnetic circuit . Background technique [0002] Many conventional current converters include a magnetic core made of a material with high magnetic permeability and include a magnetic field sensor, such as a Hall Effect sensor, positioned in a gap formed within the magnetic core. A primary conductor running along the central channel of the magnetic circuit generates a magnetic field carried by the magnetic core. A magnetic field flows through the gap and a magnetic field detector positioned in the gap. [0003] To avoid discharges and to ensure correct measurement of the current flowing in the primary conductor, the magnetic core is usually grounded. Typically, this is accomplished by soldering, welding or crimping an electrical conductor configured to be grounded to ...

Claims

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Application Information

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IPC IPC(8): G01R15/20
CPCG01R15/20G01R15/202G01R33/0047G01R33/07G01R19/0092
Inventor L·西莫南
Owner 莱姆电子(中国)有限公司
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