US PATENT SUBCLASS 318 / 780
.~.~.~ Three phase motor with variable transformer to initially adjust voltage to motor windings

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

727  DF  INDUCTION MOTOR SYSTEMS {12}
767  DF  .~ Primary circuit control {9}
778  DF  .~.~ Starting control {3}
780.~.~.~ Three phase motor with variable transformer to initially adjust voltage to motor windings

DEFINITION

Classification: 318/780

Three phase motor with variable transformer to initially adjust voltage to motor windings:

(under subclass 778) Subject matter wherein the circuit includes transformer means to enable the application of a voltage value for starting which is different from the voltage applied during running of a three phase motor.

(1) Note. Tapped transformer windings or auto-transformers are included in this subclass.