Phone Paper Covered Flat Copper Wire

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1.the implementation standard: GB/T7673-2008 paper wrapped copper flat wire

2.quality requirements: tape to be tight, uniform and smooth around the conductor, should not be missing, should not wrinkle, crack, tape overlap seams shall not be exposed, tape joints and insulation repair allows the insulating layer thick, but the length is not greater than 500mm. If the lack of coating and cracking occurs in the production process, it will affect the insulation performance of the paper wrapped wire, resulting in partial pressure resistance is not enough, discharge, resulting in transformer breakdown, explosion. But if the insulation thickness is too thick, the size of the parts is too large. The overall coil size is too large after winding the transformer, and the assembly of the transformer shell is difficult to assemble

3.definitions:

Insulation thickness: the difference between the overall size of the package line and the conductor size (thickness on both sides)

Paper pitch: the axial length of an insulating tape that forms a complete spiral;

Overlap width: the width of the tape used to overlap the wrapping;


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