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Pressboard PSP3052 (Transformer Board PSP3052)

Pressboard PSP3052 (Transformer Board PSP3052) 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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Description

Features

· Insulation class A (105 °C)

· Natural-coloured

· Hot-pressed Pressboard, 100 % sulphate pulp

· High hardness and stiffness

· 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 cyclinders, strips, spacers, rings. washers, plates, machine formed and moulded parts, punchings and laminates.

Available

Thickness: 0.80mm – 4.0mm

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

Special dimensions on request

Technical Data

	Test standard	Measured value	Standard value
Thickness tolerance	IEC 641-2	≤ 1.6 mm 6.00 % > 1.6 - 8.0 mm 4.00 %	±7.5 % ± 5.0 %
Apparent density	IEC 641-2	≤ 1.6 mm 1.09 g/cm³ > 1.6 - 4.0 mm 1.15 g/cm³	1.00 - 1.20 g/cm³ 1.10 - 1.25 g/cm³
Min. tensile strength M.D. unfolded	IEC 641-2	≤ 1.6 mm 107 N/mm² > 1.6 - 4.0 mm 128 N/mm²	100 N/mm² 105 N/mm²
Min. tensile strength C.M.D, unfolded	IEC 641-2	≤ 1.6 mm 77 N/mm² > 1.6 - 4.0 mm 83 N/mm²	75 N/mm² 80 N/mm²
Min. elongation M.D, unfolded	IEC 641-2	3.9 %	3.0 %
Min. elongation C.M.D, unfolded	IEC 641-2	4.1 %	4.0 %
Max. moisture content	IEC 641-2	4.2 %	6.0 %
Max. ash content	IEC 641-2	0.3 %	1.0 %
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	≤ 1.6 mm 13.7 % > 1.6 - 4.0 mm 10.6 %	11.0 % 9.0 %
Compressibility C	IEC 641-2	≤ 1.6 mm 9.4 % > 1.6 - 4.0 mm 5.7 %	10.0 % 7.5 %
Revers. part of compressibility Crev	IEC 641-2	≤ 1.6 mm 54 % > 1.6 - 4.0 mm 71 %	45 % 50 %
Min. breakdown voltage in oil	IEC 641-2	≤ 1.6 mm 50 kV/mm > 1.6 - 4.0 mm 45 kV/mm	40 kV/mm 35 kV/mm
Max. conductivity of aqueous extract	IEC 641-2	≤ 1.6 mm 3.3 mS/m > 1.6 - 4.0 mm 3.5 mS/m	5.0 mS/m 6.0 mS/m

Packaging

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