Title:
METHOD OF PRODUCING CAST ROTOR
Document Type and Number:
Japanese Patent JPS54142510
Kind Code:
A
Abstract:
PURPOSE:To ensure sufficient cooling effect of a laminated spacer for forming a duct by eliminating or drastically reducing copper loss generated in the spacer. CONSTITUTION:A laminated spacer for forming duct is made employing an aluminium base alloy or a die casting. Then, a slot hole of the spacer 5 is coated with a heatproof insulating paint lest the spacer should act as a sort of short-circuit ring when it is cast into a laminated core 1. With such an arrangement, as the resistance between the secondary conductors reaches almost infinite level, the ckrrent flowing through a resistance R3 of the spacer between adjacent secondary conductors is zero, thus eliminating copper loss generated in the space itself.
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Inventors:
KAWAMOTO MASASHI
ICHIKAWA KAZUO
OZAWA SHIGEO
ICHIKAWA KAZUO
OZAWA SHIGEO
Application Number:
JP4986178A
Publication Date:
November 06, 1979
Filing Date:
April 28, 1978
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
H02K17/16; (IPC1-7): H02K17/16
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