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Eletrician Insulating Paperboard

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Charasteristic for eletrician insulating paperboard

Pressboard is made from 100% superior sulfate insulating wood pulp. It has good dielectric and high mechanical properties.

Usage for eletrician insulating paperboard

Pressboard is widely used for transformers, high pressure electric apparatus, current transformers, switches, etc.

Properties

Units

 Values

≤1.6mm

>1.6-3.0mm

>3.0-6.0mm

Thickness Tolerance

%

≤ ±7.5

≤ ±5.0

Density

g/cm3

1.0-1.2

Tensile Strength

 MD

 Mpa

≥80

≥80

≥80

TD

≥55

≥55

≥50

Elongation

 MD

 %

≥6.0

 TD

≥8.0

Shrinkage

 MD

%

<0.7

TD

<1.0

Thickness

<5.0

 Moisture Content

%

≤8.0

 Ash Content

%

≤1.0

 Electric Conductivity

Ms/m

≤8.0

 PH of Water Extractives

6.0-9.0

Electric breakdown Strength in oil

KV/mm

≥40

≥30

Ztelec Group