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Pressboard PSP3050 (Transformer Board PSP3050)

Pressboard PSP3050 (Transformer Board PSP3050)

Pressboard PSP3050 (Transformer Board PSP3050) is a special product based on pure cellulose taken from long-fibred coniferous wood. This is structured into a fibrous tissue without additional adhesive and then pressed. Due to its high chemical purity, pressboard is excellently suited as an insulation material in electric machines, capacitors and oil-filled transformers.
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Product description
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Type B 2.1.A in according to IEC 641-1

Description

Pressboard PSP3050 (Transformer Board PSP3050) is a special product based on pure cellulose taken from long-fibred coniferous wood. This is structured into a fibrous tissue without additional adhesive and then pressed. Due to its high chemical purity, pressboard is excellently suited as an insulation material in electric machines, capacitors and oil-filled transformers.

 

Features

Insulation class A (105 °C)

Natural-coloured

Calandered Pressboard, 100% sulphate pulp

High Flexible and Soft

Low shrinkage and compatibility

High purity and mechanical strength

Good compatibility with liquid dielectrics

Further processing is ensured since the pressboard can be punched, folded, cut and formed without difficulty.

 

Applications

To use as insulations material in Power and Distribution Transformers

It is the base material for components like corrugated boards, cyclinders, rings and mouldable parts.

 

Available

Thickness: 0.80mm – 4.0mm

Sheet dimension: 1000mm x 2000mm, 2100mm x 4200mm

Special dimentions on request

 

Technical Date

 

Test standard

Measured value

Standard value

Thickness tolerance

IEC 641-2

≤1.6mm 6.00%
>1.6-8.0mm 3.00%

±7.5%
±5.0%

Apparent density

IEC 641-2

≤1.6mm 1.0g/cm³
>1.6-4.0mm 1.15g/cm³

1.00-1.20g/cm³
1.10-1.25g/cm³

Min. tensile strength M.D. unfolded

IEC 641-2

≤1.6mm 75N/mm²
>1.6-4.0mm 90N/mm²

70N/mm²
80N/mm²

Min. tensile strength C.M.D, unfolded

IEC 641-2

≤1.6mm 60N/mm²
>1.6-4.0mm 70N/mm²

50N/mm²
55N/mm²

Min. elongation M.D, unfolded

IEC 641-2

6.5%

6.0 %

Min. elongation C.M.D, unfolded

IEC 641-2

8.1%

8.0 %

Max. moisture content

IEC 641-2

7.6%

8.0 %

Max. ash content

IEC 641-2

0.8%

2.0 %

pH of aqueous extract

IEC 641-2

6.3

6.0 - 9.0

Max. shrinkage M.D

IEC 641-2

0.4%

0.5 %

Max. shrinkage C.M.D

IEC 641-2

0.6%

0.7 %

Max. thickness shrinkage

IEC 641-2

3.9%

5.0 %

Min. oil absorption

IEC 641-2

≤1.6mm 13.7%
>1.6-4.0 mm 10.6%

11.0 %
9.0 %

Compressibility C

IEC 641-2

≤1.6mm 9.4%
>1.6-4.0mm 5.7%

10.0 %
7.5 %

Revers. part of compressibility Crev

IEC 641-2

≤1.mm 54%
>1.6-4.0mm 71%

45 %
50 %

Min. breakdown voltage in oil

IEC 641-2

≤1.6mm 15kV/mm
>1.6-4.0mm 13kV/mm

12kV/mm
10kV/mm

Max. conductivity of aqueous extract

IEC 641-2

≤1.6mm 3.3mS/m
>1.6-4.0mm 3.5mS/m

10mS/m
10mS/m

These tests have been carried out on transformer board thicknesses 1.0 mm, 3.0 mm, 4.0 mm

The above values, which have been determined by careful tests, provide only general information. Our company has implemented several programs to assure the highest quality and reliability of this product. However, no responsibility is assumed for its use.

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