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Copper Foil Shielding Paper

Copper Foil Shielding Paper is an emerging shielding insulating material that is composed of high-density insulating paper and high-purity copper foil using special adhesives and a unique process. It is primarily used in transformers, mutual inductors, and reactors as grounding shields, electrostatic shields, and coil conductive layers. Its use can improve electromagnetic field distribution, reduce partial discharge, enhance insulation, decrease losses, and improve safety and reliability. It is a new type of shielding insulation material urgently needed in the domestic high-voltage electrical industry.

Key words:

Oil-Immersed Transformer Insulating Materials | Mutual Inductor Insulation Materials

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Product Consulting:

86-13901476700

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Product Description

Serial Number	Performance			Unit	Requirements
					6920-0.15/0.13/0.01-52	6920-0.23/0.20/0.02-25	6920-0.23/0.20/0.02-52
1	Base Paper Performance Requirements
1.1	Thickness			mm	0.13±0.01	0.20±0.02	0.20±0.02
1.2	Tightness			g/cm3	1.05~1.15
1.3	Ash			%	≤ 1
1.4	PH value of water extract				6.0~9.0
2	Performance Requirements for Aluminum (Copper) Shielding Insulation Paper
2.1	Thickness		mm		0.15±0.01	0.23±0.03	0.23±0.03
2.2	Longitudinal tensile strength		KN/m		≥ 20.0
2.3	Longitudinal elongation at break		%		≥ 2.0
2.4	Electrical strength	In oil	KV/mm		≥ 55.0
		in the air			≥6.0