Presspaper PSP3055

Descriptions:Presspaper PSP3055 (Pressspan) is a special product on the basis of the purest wood cellulose fibres. Without any additional binding agents, these are made up into a fibrous web and then pressed. Due to its high chemical purity, presspaper PSP3055 (presspan) is particularly suited as an insulating material in electric machines, capacitors, motors, etc., and especially in oil-cooled transformers. FeaturesInsulation class A (105 °C) Calendered presspaper, good forming properties, 100 % sulphate pulp Colour natural High purity and high oil-absorption Good compatibility with liquid dielectrics High electric dielectric strength Presspaper can be coated with baked enamel or laminated with Polyester Film ApplicationsAs interlayer insulation in liquid-filled transformers, motors Available Thickness: 0.10mm – 0.50mm Both in roll and sheet are available Width: 500mm – 1250mm Special sizes are available on request Different colours are available on request Technical Data Test standard *Measured valueStandard valueThickness toleranceIEC 641-2±10 %±10 %Apparent densityIEC 641-21.1 g/cm³1.0 - 1.2 g/cm³Min. tensile strength M.D, unfoldedIEC 641-290 N/mm²80 N/mm²Min. tensile strength C.M.D, unfoldedIEC 641-250 N/mm²40 N/mm²Min. elongation M.D, unfoldedIEC 641-26.5 %6 %Min. elongation C.M.D, unfoldedIEC 641-213 %12 %Max. moisture contentIEC 641-28 %8 %Max. ash contentIEC 641-20.5 %1 %pH of aqueous extractIEC 641-27 - 96 - 9Max. shrinkage M.DIEC 641-20.7 %1 %Max. shrinkage C.M.DIEC 641-21.2 %1.5 %Max. thickness shrinkageIEC 641-25 %7 %Min. oil absorptionIEC 641-225 %12 %Min. breakdown voltage in air, unfolded, normalizedIEC 641-210 kV/mm9 kV/mmMin. breakdown voltage in oilIEC 641-260 kV/mm40 kV/mm