Accelerated test performance of imide-modified magnet wire insulations for hermetic motors

“Hermetic Motors” is the term used in this paper to describe those motors, completely contained within sealed enclosures, which are parts of refrigeration systems. The design of these units is such that magnet wire, used for the motor windings, must operate in both gaseous and liquid refrigerant environments. In addition to this, temperatures vary over a wide range and at times may rise very rapidly due to overload conditions.