Method for insulating slots in rotors of electrical rotating mac

Details Method for insulating slots in rotors of electrical rotating mac Method for insulating slots in rotors of electrical rotating mac

1982-09-29

1985-01-15

Morgenstern, Norman

Coating processes

Electrical product produced

Motor stator or core for winding

427235, 427238, 427239, 427318, B05D 512

Patent

active

044938586

ABSTRACT:
A method for insulating slots of a rotor in an electrical rotating machine comprises steps of removing punching oil from a rotor core assembly by heating only the interior of the slots to a high temperature while axially compressing the rotor core assembly, applying a liquid electric insulating paint to the inner wall surfaces of the slots by introducing the paint only into the slots and then discharging the paint from the slots while pressurizing the rotor core assembly, applying a negative pressure to the lower ends of the slots to remove the paint collected at the lower ends of the slots, and heating at least the interior of the slots to bake the paint on the inner wall surfaces of the slots.

REFERENCES:
patent: 3025188 (1962-03-01), Larsh et al.
patent: 3537875 (1970-11-01), Kerr
patent: 3579788 (1971-05-01), Fritzsche
"Stray-Load Losses and Stray Torques in Induction Machines" by Adnan M. Okok, Associate Member AIEE, Trans. AIEE 1958, Apr. 1977, p. 50 FIG. 11, p. 52.
"Change of Stray Loss of a Cage Induction Motor With Axial Variation of the Interbar Resistance" by O. I. Butler, vol. 118, and others Proc. IEE, vol. 118, No. 7, Jul. 1971, pp. 884-886.
"H. F. Stray Load Losses in Cage Induction Motors" by B. J. Chalmers, Ph.D., Electrical Times, Nov. 16, 1967, pp. 785-787.

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