Application of solventless resins to high voltage generator insulation

Those familiar with the history of organic insulating materials are aware of the fact that within the last thirty years, materials from natural sources are gradually being replaced with synthetic materials. The result of such a substitution is usually a product with consistently better and more controllable properties. This type of progress was made possible by the many developments in the synthesis of new materials by the chemist, who initiated what might be called the synthetic era in the 1920´s. The new insulation described in this paper involves a product of synthetic chemistry. It was developed for use on the stator coils of large high voltage generators, many of which are rated at more than 100,000 Kva.