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Current sensor with Rogowski coil and a method for manufacturing such a current sensor

A current sensor and sensor technology, which is applied in the direction of manufacturing measuring instruments, measuring current/voltage, instruments, etc., can solve the problems of insufficient current measurement and complicated application

Active Publication Date: 2015-06-24
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the results given by such compensation are still insufficient to obtain accurate current measurements, and such solutions are complex for the application

Method used

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  • Current sensor with Rogowski coil and a method for manufacturing such a current sensor
  • Current sensor with Rogowski coil and a method for manufacturing such a current sensor
  • Current sensor with Rogowski coil and a method for manufacturing such a current sensor

Examples

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Embodiment Construction

[0044] In the ensuing description, the expression "substantially equal to" defines an equality relationship of greater or less than 5%.

[0045] exist figure 1 1 , an electrical device 10 includes a power supply 12 , three electrical conductors 14 forming a three-phase grid, and three current sensors 16 with Rogowski coils, each sensor 16 positioned around a respective electrical conductor 14 .

[0046] The power supply 12 comprises a control unit 17 and is for example capable of delivering a low voltage having a value of for example less than 1000 Volts.

[0047] Each current sensor 16 forms a loop around a corresponding electrical conductor 14 , each current sensor 16 including a flexible body 18 and a closure mechanism 20 . Such as figure 2 As shown, each body 18 includes a main coil 22 , a winding support 24 , a sheath 26 , and a first end 28 and a second end 30 for attachment to the closure mechanism 20 .

[0048] The current sensor 16 comprises a secondary coil 32 co...

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PUM

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Abstract

This current sensor (16) is a Rogowski coil for measuring a current flowing in an electrical conductor. The current sensor includes a main winding (22) having two ends (42, 44), a closing mechanism (20) suitable for connecting an end (42) at the other end (44). The locking mechanism is movable with respect to one end (44) between a closed position and an open position. The two ends (42, 44) are in the closed position of the closing mechanism, disposed along a longitudinal axis (X) of the closure mechanism (20) and spaced from each other along the longitudinal axis (X). The sensor further comprises a secondary winding (32) disposed between the ends (42, 44) of the main winding (22) in the closed position of the closing mechanism (20). The secondary winding (32) comprises a plurality of coils offset from each other relative to the longitudinal axis (X).

Description

technical field [0001] The invention relates to a current sensor with a Rogowski coil and a method for producing such a sensor. Background technique [0002] A current sensor with a Rogowski coil can be positioned around an electrical conductor and can measure the current flowing in such an electrical conductor. Known current sensors with Rogowski coils include a main coil positioned around an electrical conductor. According to Ampere's law and Faraday's law, if the main coil forms a closed loop around the conductor, it gives back a signal proportional to the derivative of the current flowing in the electrical conductor. [0003] One of the benefits of a current sensor with a Rogowski coil is that it includes a closure mechanism capable of connecting the two ends of the main coil. More specifically, the closing mechanism is respectively movable relative to one of the ends between a closed position and an open position, wherein the main coil and the closing mechanism respec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R3/00
CPCG01R15/181
Inventor J.斯特帕尼克S.蒂安D.辛托姆兹
Owner SCHNEIDER ELECTRIC IND SAS
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