{"id":6056,"date":"2024-01-24T16:15:26","date_gmt":"2024-01-24T15:15:26","guid":{"rendered":"https:\/\/schupp.ch\/p\/pressboard\/"},"modified":"2025-11-19T13:55:25","modified_gmt":"2025-11-19T12:55:25","slug":"pressboard","status":"publish","type":"product","link":"https:\/\/schupp.ch\/en\/p\/pressboard\/","title":{"rendered":"Pressboard"},"content":{"rendered":"

 <\/p>\n

Specifications<\/h5>\n

 <\/p>\n

 <\/p>\n

Application:
\n<\/strong>Insulation in transformers for phase separation<\/p>\n

Structure:
\n<\/strong>Very dense, calendered material made of sulphate cellulose, completely free of impurities<\/p>\n

Temp. Class:
\n<\/strong>A (105 \u00b0C)<\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
 <\/p>\n

Properties:<\/strong><\/p>\n

(better DIN 7733)<\/td>\n

Unit of measurement<\/td>\nValues<\/td>\nTest standard<\/td>\n<\/tr>\n
Conductivity in aqueous solution<\/td>\n[nS\/cm]<\/td>\n100<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Longitudinal tensile strength<\/td>\n[N\/mm2]<\/td>\n\u2265 80<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Transverse tensile strength<\/td>\n[N\/mm2]<\/td>\n\u2265 55<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Longitudinal elongation<\/td>\n[%]<\/td>\n\u2265 6<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Transverse elongation<\/td>\n[%]<\/td>\n\u2265 8<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Dielectric strength<\/td>\n[kV\/mm]<\/td>\n\u2265 10<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Ash content<\/td>\n[%]<\/td>\n\u2264 2<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Maximum moisture absorption<\/td>\n[%]<\/td>\n\u2264 8<\/td>\nDIN 7734<\/td>\n<\/tr>\n
Density<\/td>\n[g\/cm3]<\/td>\n1,20 – 1,30<\/td>\nDIN 7734<\/td>\n<\/tr>\n
linear expansion coefficient<\/td>\n[K-1]<\/td>\n5 x 10-6<\/td>\n<\/td>\n<\/tr>\n
Thermal conductivity<\/td>\n[W\/(m * K)]<\/td>\n0,45<\/td>\n<\/td>\n<\/tr>\n
Dielectric constant<\/td>\n<\/td>\n4,1 – 4,4<\/td>\n<\/td>\n<\/tr>\n
Specific volume resistance<\/td>\n[\u03a9 * cm]<\/td>\n1014 – 1015<\/td>\n<\/td>\n<\/tr>\n
Storage conditions<\/td>\ndry room, in original packaging<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Formats: <\/strong><\/p>\n

1000 x approx. 2100 mm
\n1000 x approx. 1050 mm
\n1000 x approx. 700 mm<\/p>\n

 <\/p>\n

Dimensions:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Item number<\/td>\n<\/td>\nThickness [mm]<\/td>\nThickness deviation [mm]<\/td>\nMass per unit area [g\/m2]<\/td>\n<\/tr>\n
PS080<\/td>\n*<\/td>\n0,8<\/td>\n\u00b1 0,05<\/td>\n880<\/td>\n<\/tr>\n
PS100<\/td>\n*<\/td>\n1,0<\/td>\n\u00b1 0,07<\/td>\n1100<\/td>\n<\/tr>\n
PS150<\/td>\n*<\/td>\n1,5<\/td>\n\u00b1 0,10<\/td>\n1650<\/td>\n<\/tr>\n
PS200<\/td>\n*<\/td>\n2,0<\/td>\n\u00b1 0,10<\/td>\n2200<\/td>\n<\/tr>\n
PS250<\/td>\n*<\/td>\n2,5<\/td>\n\u00b1 0,12<\/td>\n2750<\/td>\n<\/tr>\n
PS300<\/td>\n*<\/td>\n3,0<\/td>\n\u00b1 0,15<\/td>\n3300<\/td>\n<\/tr>\n
PS350<\/td>\n*<\/td>\n3,5<\/td>\n\u00b1 0,20<\/td>\n3850<\/td>\n<\/tr>\n
PS400<\/td>\n*<\/td>\n4,0<\/td>\n\u00b1 0,20<\/td>\n4400<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

* ex works warehouse, minimum order quantity 30 kg<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

 <\/p>\n

Presspan is a product made from the cellulose of the purest, long-fiber woods. This is formed into a fiber fleece and then pressed. Due to its high chemical purity, pressed wood is used particular as an insulating material in electrical machines (resin-impregnated), capacitors (oil- or resin-impregnated) and especially in oil-filled transformers. The material properties allow classification in insulation class A (105\u00b0C) and are manufactured in accordance with the IEC standard. Depending on the thickness of the material, a distinction is made between sheet and roll pressboard.<\/strong><\/h5>\n

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