ENAMELED WIRE

Paper Covered Wire

Paper insulated covered wire is a wire that is annealed after an oxygen-free copper rod or electrical round aluminum rod is extruded or drawn through a certain specification mold, and then two or more layers of insulating paper.

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Paper covered wire description

Paper-covered wire is a wire that is annealed after an oxygen-free copper rod or electrical round aluminum rod is extruded or drawn through a certain specification mold, and then two or more layers of insulating paper (including Telephone paper, cable paper, high-voltage cable paper, interturn insulation paper, etc.) are suitable for oil-immersed transformer coils and other similar electrical appliance winding wires.

Paper covered wire parameter

Name Paper covered wire
Diameter 4mm
Standard GB/T7673.3-2008
Test item Unit Technical requirement Test result
appearance   Uniform, no missing layers, no wrinkles and cracks pass
Bare wire a mm ±0.05 3.99
b mm ±0.10 14.98
Insulation film thickness mm 0.405----0.45 ----0.50 0.43
Resistance Ω/m ≤0.02785 0.02773
Elongation   >=17% 24%
Packing overlap   ≥2 2
Packing   Meet standard Pass
Quality control results   Pass

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