INVERTER SURGE-RESISTANT INSULATED WIRE AND METHOD FOR PRODUCING SAME

摘要

An inverter surge-resistant insulated wire wherein: at least one baked enamel layer and at least one extrusion coated resin layer, which is arranged on the outer side of the baked enamel layer, are provided around a conductor that has a rectangular cross-sectional shape; an adhesive layer having a thickness of 2-20 μm is provided between the baked enamel layer(s) and the extrusion coated resin layer(s); all of the extrusion coated resin layer(s) on the adhesive layer are formed of a same resin; the baked enamel layer(s) and the extrusion coated resin layer(s) in a cross-section of the inverter surge-resistant insulated wire have a rectangular cross-sectional shape; in the rectangular cross-sectional shape surrounding the conductor in the cross section and formed by the baked enamel layer(s) and the extrusion coated resin layer(s), both sides of at least one pair of sides among two pairs of sides that respectively face each other vertically or horizontally with respect to the conductor have a total thickness of the baked enamel layer(s) and the extrusion coated resin layer(s) of 80 μm or more, a thickness of the baked enamel layer(s) of 60 μm or less, and a thickness of the extrusion coated resin layer(s) of 200 μm or less; and the resin of the extrusion coated resin layer(s) has a melting point of from 300°C to 370°C (inclusive). A method for producing an inverter surge-resistant insulated wire, wherein an adhesive layer is formed around a baked enamel layer and a thermoplastic resin for forming an extrusion coated resin layer, said thermoplastic resin being in a molten state at a temperature that is higher than the glass transition temperature of the resin used for the adhesive layer, is extruded onto and brought into contact with the adhesive layer.