(under subclass 89) Subject matter wherein the armature
circuit control comprises plural armature circuits or windings.
(1) Note. A plurality of windings connected in series or parallel so that they constitute only one electrical armature winding is not classified as plural armature windings. To be classified in this subclass, the generator must have a plurality of armature windings connected to form different armature circuits. The plurality of armature windings may be designed so that they might be connected in series or parallel to supply a single load circuit or one of the windings may be for control purposes only.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
11+, for plural load circuit systems, and subclasses 43+ for plural supply circuit systems.
310, Electrical Generator or Motor Structure, 140+, for plural commutator generators having plural armature windings, subclasses 144+ for plural slip ring generators having plural armature windings, and subclasses 198+ for plural armature winding structure.
318, Electricity: Motive Power Systems,
724, for synchronous motor armature circuits having a plurality of windings or winding portions; subclass 737 for self-cascaded induction motor systems having a plurality of primary windings; subclasses 768+ for three phase winding induction motor systems operated from a single phase source; subclass 770 for induction motor primary circuits of the dual voltage type; subclass 771 for delta-wye, plural wye, or delta-delta connected induction motor primary circuits; subclass 775 for plural speed single induction motors having a separate primary winding for each speed; subclass 777 for plural speed induction motors having a separate primary winding for each speed; subclasses 288+, for motor reversing by plural armature windings.
