INVERTOR-SURGE RESISTANT INSULATED WIRE

摘要

An inverter surge-resistant insulated wire, having at least one baked enamel layer around the outer periphery of a conductor, and an extrusion-coated resin layer at the outside of the baked enamel layer, wherein a total thickness of the baked enamel layer and the extrusion-coated resin layer is 50µm or more, a thickness of the baked enamel layer is 60µm or less, and a thickness of the extrusion-coated resin layer is 200µm or less, wherein the minimum of tensile elastic modulus of the extrusion-coated resin layer at a range of 25 to 250°C is 100MPa or more, wherein a dielectric constant of an insulation layer having a combination of the baked enamel layer and the extrusion-coated resin layer is 3.5 or less at 25°C and 5.0 or less at 250°C, and wherein a relation between dielectric constant (µ1') of the baked enamel layer at 250°C and dielectric constant (µ2') of the extrusion-coated resin layer at 250°C satisfies (µ2'/µ1')>1.