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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.

Category:

Transformer Field

Keywords:

Vera +86 186 8485 6004

Susan +86 158 7406 3947

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DESCRIPTION

Type B 2.1.A in according to IEC 641-1

Description

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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