High voltage induction motor without ladder insulation between m

Details High voltage induction motor without ladder insulation between m High voltage induction motor without ladder insulation between m

1976-03-04

1980-10-07

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310194, 310198, 310 68C, 310 72, H02K 300

Patent

active

042271061

ABSTRACT:
A permanent split capacitor induction motor rated at 460 volts AC is provided with first and second main winding parts and an auxiliary winding. The motor includes a core of magnetic material having a plurality of winding receiving slots formed in it. The main and auxiliary windings are constructed from a plurality of wire turns arranged in coil sets. The auxiliary winding is placed adjacent the first main winding part in the core slots, and is electrically connected to it. The coil sets of the auxiliary winding are separated from the coil sets defining the second main winding part by the coil sets of the first main winding part. Individual wire turns are distributed in the slots of the motor and positioned so that the voltage between coil sets forming the main winding parts and the auxiliary winding can never exceed the voltage across the capacitor. Because of the low voltage between coil sets, the coil sets of the respective windings may be placed in the slots without the use of additional insulation between coil sets other than the insulative coating provided on the wire used for coil set construction.

REFERENCES:
patent: 2796543 (1957-06-01), Dunn
patent: 2812459 (1957-11-01), Smith
patent: 3204167 (1965-08-01), Zigler
patent: 3219857 (1965-11-01), Fisher
patent: 3334255 (1957-08-01), Peters
patent: 3633057 (1972-01-01), Smith
patent: 3774062 (1973-11-01), Johnson
patent: 3821602 (1974-06-01), Linkous
patent: 3887854 (1975-06-01), Parks
patent: 3940646 (1976-02-01), Buckman

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