Patent ID: 8652635

Claim:
An insulated wire consisting of one thin insulating layer composed of a resin dispersion, coated on a conductor, wherein the thickness of the thin insulating layer is 20 to 60 μm, and wherein the resin dispersion consists of: a polyester-series resin (A) in a continuous phase; and a resin (B) having a glycidyl ester compound of an unsaturated carboxylic acid represented by formula (1) and dispersed with an average particle diameter of 0.05 to 3 μm in the resin (A); wherein R represents an alkenyl group having 2 to 18 carbon atoms and X represents a carbonyloxy group; wherein the resin dispersion is a compound in which resin (B) is uniformly and finely dispersed in resin (A); wherein the resin dispersion contains 1 to 10 mass parts of the resin (B), to 100 mass parts of the polyester-series resin (A); and wherein the insulated wire has a dielectric breakdown voltage of from 6.7 to 7.8 kV after being left for 1 hour at 100° C.