Paper Covered Wire

Time: 10-12 2020 Auther: Ztelec group

Paper covered wire description Paper-covered wire is a wire that is annealed after an oxygen-free copper rod o...

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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