INSULATED WIRE

PURPOSE:To provide an insulated wire having high lubricating ability and heat resistance and capable of high speed winding work by forming the outermost insulating layer of insulating varnish containing perfluoropolyether. CONSTITUTION:This insulated wire has at least one insulating layer on a conductor consisting of copper, and its most outside insulating layer is formed of an insulating varnish containing perfluoropolyether. The perfluoropolyether used herein is a fluorine carbonate polymer having a linear or branched structure having (CF2-O) in the main chain. When the addition of the perfluoropolyether is less than 0.05wt.%, a sufficient effect for improving lubricating ability cannot be obtained. When it exceeds 20wt.%, the insulated wire becomes sticky, resulting in aggravation of handling property, and further, when used as a hermetic motor of compressor, the extract content extracted in coolant and motor oil is inconveniently increased.