Patent ID: 11901784
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A method of manufacturing a stator coil, comprising the steps of:
winding and laminating a first mica tape around an outer periphery of a coil conductor so that the laminated first mica tape has a thickness of 0.1 mm or more and 1 mm or less;
winding and laminating a second mica tape around an outer periphery of the laminated first mica tape;
impregnating a liquid thermosetting resin composition into the coil conductor having the first mica tape and the second mica tape wound therearound; and
curing the liquid thermosetting resin composition by heating,
wherein the first mica tape contains mica particles in a content of 30 g or more and 100 g or less per 1 m2 of the mica tape,
wherein 60 mass % or more of the mica particles contained in the first mica tape pass through a JIS standard sieve having a nominal opening of 250 μm, and
wherein 40 mass % or less of mica particles contained in the second mica tape pass through the JIS standard sieve having a nominal opening of 250 μm.