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Electrical device

An electrical and electrical wire technology, applied in the field of electrical devices, can solve problems such as inability to reduce errors and difficulties, and achieve the effects of low tolerance, good uniformity, and good mechanical and chemical stability

Inactive Publication Date: 2014-05-28
ABB TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cannot reduce errors caused by non-uniform deformation and non-uniform winding
Ensuring good accuracy over a wide temperature range is very difficult even in complex systems with technologically advanced correction devices

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0052] These exemplary embodiments of the invention shown in the drawings are described in more detail below.

[0053] figure 1 A first embodiment of a glass carrier 10 according to the invention is represented, especially for use in Rogowski coils, having a circular shape and having a cross-section 12 of substantially oval or elliptical shape. This oval or elliptical cross-section 12 is advantageous in some cases, since it enables an elongated shape while ensuring good contact between the coil electrical leads and the glass carrier.

[0054] exist figure 2 In , a second embodiment of a glass carrier 14 , in particular to be used in a Rogowski coil, is shown which has the shape of a ring and has a cross-section 16 of circular shape.

[0055] image 3 A third embodiment of a glass carrier 18 according to the invention, which has a shape similar to an elliptical ring, is shown, especially to be used in a Rogowski coil. The oval or oval ring shape of carrier 18 is advantage...

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PUM

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Abstract

The invention is related to an electrical device (30, 40) for measuring alternating current or current pulses which comprises at least one coil (34, 42) of electrically conductive wire being wound around a non-magnetic carrier (10, 20, 26, 32, 50), whereas the non-magnetic carrier (10, 20, 26, 32, 50) is made of glass.

Description

technical field [0001] The invention relates to an electrical device for measuring alternating currents or current pulses, consisting of a coil, preferably wound around a non-magnetic carrier, which preferably has a constant cross-sectional area and constitutes a closed or almost closed loop. Such devices are commonly referred to as Rogowski Coils and are widely used as devices for measuring alternating current (AC) or current pulses. This type of coil has many advantages over other types of current sensors, but there are also some disadvantages. Background technique [0002] Rogowski coils are generally constructed by applying electrical leads to a non-magnetic and non-conductive carrier, usually a plastic-based structure and forming a closed or nearly closed loop, so that a toroidal coil is formed, Wherein the electric wires are arranged in a helical shape on the annular carrier to form an annular coil. Leads from one end of the coil can be returned to the other end thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F5/02G01R15/18
CPCG01R19/0092H01F5/02H01F38/30G01R15/181G01R31/083G01R31/11
Inventor A·霍佐尔R·迪塞尔恩克特
Owner ABB TECH AG