Status Report — IEEE working group on the evaluation of sealed insulation systems

In view of the increased demand and use of electrical rotating machinery in severe environmental conditions with the insulation system exposed to the environments, a need exists for a suitable test procedure for sealed insulation. The IEEE Insulation Subcommittee of the Rotating Machinery Committee was given the assignment to develop and write a standard test procedure for electric machinery using sealed insulation. At present our membership consists of industrial motor end users, organizations such as the American Petroleum Institute, Underwriters Laboratories and the Navy, electrical insulation material suppliers and motor manufacturers. It was felt that we could obtain a test procedure that would be acceptable as an industry standard if we had support from a broad industrial and user membership in this working group.