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Current transformer wide in measurement range

A current transformer and wide measurement technology, applied in the direction of inductors, transformer/inductor cores, circuits, etc., can solve the problems of reducing the anti-magnetic saturation ability of current transformers, reduce assembly difficulties, and improve anti-magnetic saturation ability Effect

Inactive Publication Date: 2015-04-29
CNC ELECTRIC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to punching at both ends, the cross-sectional area of ​​the silicon steel sheet at the punched part is much smaller than that of the non-punched part, which makes the punched part magnetically saturated quickly, thereby reducing the anti-magnetic saturation ability of the current transformer

Method used

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  • Current transformer wide in measurement range
  • Current transformer wide in measurement range

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Embodiment Construction

[0018] combine Figure 1-Figure 4 , which is a structural schematic diagram of an embodiment of a current transformer with a wide measurement range in the present invention. The current transformer includes an iron core 1, and the iron core 1 adopts a strip-shaped oriented silicon steel sheet without punching holes at both ends Made; the silicon steel sheets are staggered and stacked together with 4 pieces as a whole; the coil 4 is also included, and the coil 4 is wound on the bobbin 3 of the fixing device; the current transformer is processed by dipping the paint as a whole .

[0019] combine Figure 7 , the above-mentioned products of the present invention have laid a solid foundation for the wide measurement range and high protection accuracy of reclosing molded case circuit breakers or electronic molded case circuit breakers. The reclosing molded case circuit breakers or electronic molded case circuit breakers of this design The anti-magnetic saturation capacity of curre...

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Abstract

The invention relates to the technical field of current transformers, in particular to a current transformer wide in measurement range, aiming at overcoming the defects of large size and poor magnetic saturation resistance of existing current transformers. The current transformer wide in measurement range comprises an iron core and coils and is characterized in that the iron core is made of four strip-shaped oriented silicon steel sheets with two ends free of punched holes and formed by stacking the four silicon steel sheets integrally in a staggered manner, the coils are wound around coil skeletons of a fixing device, and the current transformer is subjected to integral paint dipping treatment. The current transformer wide in measurement range has the advantages that the magnetic saturation resistance of the current transformer for a reclosure molded case circuit breaker or an electronic type molded case circuit breaker is improved greatly; the four silicon steel sheets are stacked together and then assembled integrally in a staggered manner, so that assembly difficulty of the strip-shaped silicon steel sheets is lowered.

Description

technical field [0001] The invention relates to the technical field of current transformers. Background technique [0002] Current transformers used for reclosing molded case circuit breakers or electronic molded case circuit breakers require high anti-magnetic saturation capability. At present, "L" or "C" type non-oriented silicon steel sheet is generally used as the iron core of this kind of current transformer, and it is fixed with a bracket or a plastic shell as a whole. This kind of current transformer has a large volume and low anti-magnetic saturation ability. Defects limit the measurement range and protection accuracy of reclosing molded case circuit breakers or electronic molded case circuit breakers. [0003] combine Figure 5 , the current transformer with oriented silicon steel sheet as the core, the iron core is punched at both ends of the strip silicon steel sheet, and fixed by rivets. Due to punching at both ends, the cross-sectional area of ​​the silicon st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/30H01F27/26H01F27/245
Inventor 余存泰章火明肖义峰彭昆明
Owner CNC ELECTRIC GRP
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