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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

Product Consulting:

Product Description

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. 
Storage:
Store the product in a clean and dry location, at least 300 mm above the ground.
 

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

Zhongling insulation material

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