This specification describes a standardised method for the determination of the average viscometric degree of polymerisation (DPv) of new and aged cellulosic electrically insulating materials. It may be applied to all cellulosic insulating materials as used in transformer, cable or capacitor manufacturing. The methods described can also be used for the determination of the intrinsic viscosity of solutions of chemically modified Kraft papers, provided that these dissolve completely in the selected solvent. Caution shall be taken if the method is applied to loaded Kraft papers.
DS/EN 60450:2004 history
2007DS/EN 60450/A1:2007 Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials
2004DS/EN 60450:2004 Measurement of the average viscometric degree of polymerisation of new and aged cellulosic electrically insulating materials
DS/EN 60450:2004 Measurement of the average viscometric degree of polymerisation of new and aged cellulosic electrically insulating materials was changed to DL/T 485-2018 Guide for preparing diagrams of electric power enterprise standard system.