Aluminum/Copper Foil Shielding Paper

Aluminum/Copper Foil Shielding Paper

Category:

Description

Aluminum/copper foil shielding paper is a new type of shielding insulating material, which is composed of high density insulating paper, high purity aluminum foil (copper foil) by using special adhesives and special technology. It is mainly used for the ground screen, electrostatic shielding layer and coil conductive layer of transformer, mutual inductor and reactor. It can improve the distribution of electromagnetic field, reduce partial discharge, strengthen insulation, reduce loss and improve safety and reliability. It is a new shielding material that must be used in domestic high voltage electrical industry.

Storage:
The product should be stored in a clean and dry place which above 300 mm above the ground.

 

Performance requirements:

No.

Property Unit Demand
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

Paper demand

1.1

Thickness mm 0.13±0.01 0.20±0.02 0.20±0.02

1.2

Density g/m² 1.0~1.15
1.3 Ash %

≤1

1.4

Conductivity of aqueous extract

ms/m

≤6

1.5

PH of aqueous extract  

6.0~9.0

2

Aluminum foil (copper foil) shield paper demand
2.1 Thickness mm 0.15±0.01 0.23±0.03

0.23±0.03

2.2

Tensile

Strength

(MD)

KN/m

≥20.0

2.3

Elongation(MD) % ≥2.0

2.4k

Electrical

strength

Inoil

kV/mm ≥55.0
Inair

≥6.0

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