Paper wrapped winding wires - Part 1: General provisions - GB/T 7673.1-2008 TestingHow to apply for a report? What items need to be tested? We will conduct testing and evaluation in strict accordance with the standards. We can also provide personalized testing plans and reports according to your needs.

Paper wrapped wire refers to the insulation layer of wire wrapped around cable paper. At least 3 layers of paper wrapped wire insulation should be wrapped with paper tape. When the width exceeds 3 feet, the innermost and outermost layers should be covered and wrapped, while the rest can be wrapped with gaps of no more than 2mm. When the width of the paper tape is 9.5mm or more, the gap should not exceed 3mm. The nominal diameter of the conductor and its maximum and minimum values, the elongation of the aluminum conductor, and the allowable deviation. The specifications, allowable deviation, and fillet radius r of the flat conductor are the same as those of the glass fiber wrapped wire. At least 3 layers of paper wrapped wire insulation should be wrapped with paper tape. When the width exceeds 3 feet, the innermost and outermost layers should be covered and wrapped, while the rest can be wrapped with gaps of no more than 2mm. When the width of the paper tape is 9.5mm or more, the gap should not exceed 3mm. On the premise of ensuring the insulation thickness, the supply and demand parties can negotiate. Other types of paper can also be used for wrapping, such as polyimide fiber paper (Nomax). The insulation thickness of paper wrapped flat wires and the winding pitch of paper wrapped wires. The standard being revised has added paper wrapped round stranded wire

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