Solid insulation material
AssigneeSiemens Aktiengesellschaft
InventorsJürgen Huber, Dieter Schirm, Matthias Übler
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Abstract
Various embodiments may include a solid insulation material, e.g. in tape form, the use thereof in a vacuum impregnation process, and/or an insulation system produced therewith and also an electrical machine having the insulation system, for the medium- and high-voltage sector. Some examples include rotating electrical machines in the medium- and high-voltage sector and also semifinished products for electrical switchgear. The solid insulation material and the insulation system produced therewith are characterized in that it can be produced in an anhydride-free manner, wherein the curing catalyst is, for example, an adduct of a 1H-imidazole and/or 1H-imidazole derivative with a compound containing oxirane groups.
Claims20
An insulation system prepared in a vacuum impregnation process, the insulation system comprising:
- an anhydride-free impregnating agent;
- and
- a solid insulation material comprising:
- a carrier;
- a barrier material;
- a curing catalyst;
- and
- a tape adhesive;
- wherein the curing catalyst and the tape adhesive are inert to one another at standard atmospheric conditions, but react with one another in the presence of the impregnating agent at a pressure and a temperature associated with the vacuum impregnation process and gel in a time between 1 to 15 hours, wherein the temperature is between 20 degrees Celsius and 100 degrees Celsius;
- and
- the curing catalyst comprises a product of a reaction of a 1H-imidazole and/or 1H-imidazole derivative with a compound containing oxirane groups with 1 to 4 oxirane functionalities per molecule.
Dependencies are inferred from the claim text.