Patent ID: 7284312

Claim:
A method for manufacturing a dynamoelectric stator, said stator comprising: a cylindrical stator core in which slots are arranged in a circumferential direction so as to open onto a radially-inner side; and a stator winding mounted to said stator core, a coil end of said stator winding being impregnated with a varnish, wherein said method for manufacturing a dynamoelectric stator comprises: a varnish treatment process comprising: preheating said stator; adjusting said varnish so as to have a viscosity of 16 to 105 mPa·s at a temperature of said stator during varnish application; dripping the adjusted varnish onto said coil end from radially outside said stator while rotating said preheated stator around a central axis that is oriented horizontally; completing application of the varnish before the temperature of the stator drops to about 80 degrees Celsius; and hardening said varnish dripped onto said coil end by heating said stator.