Choice of a magnet wire for hermetic motors

Non refrigerant factors such as windability, heat shock resistance, varnish solvent resistance and enamel adhesion are of prime importance in selecting a hermetic motor wire. Other test parameters in air are of less significance and should not be used as the primary basis for choosing a magnet wire for hermetic motors. These tests must be performed on wire in the refrigerant environment to be of greatest significance. The influence of the impregnating varnish must not be overlooked or ignored as it does alter the performance of the wire.