Stator
Construction
TECO-Westinghouse Motor Company stators are designed and built
to provide exceptional performance and outstanding reliability.
The main poles and commutating poles are all laminated to assure
quick response to speed and load changes. Our full-length commutating
poles lower the reactance voltage and compensating windings provide
proper compensation for armature reaction. Stator end connection
joints are TIG-welded together for maximum strength. Compensating
winding straps are individually bolted at the centerline split
to allow quick removal of the top half of the stator. All stator
electrical conductors are made from copper.
Armature
Coils
Laminated, rectangular copper conductors are individually insulated
and bonded together with separators. The formed, full coils are
wrapped with ground wall insulation. A protective binding of tape
then covers the complete coil. After winding, multiple coats of
insulating resin are applied to create a smooth surface that resists
rust, moisture, chemical contamination and heat.
Superior
Banding and Wedging
In a unique TECO-Westinghouse developed glass banding process,
acrylic-treated glass tape is applied to the armature coil end-turns
under controlled tension and temperature. This process creates
solid, high-strength, pre-tensioned bands which restrict coil
movement under the forces encountered in service. The TECO-Westinghouse
armature wedge design prevents coil movement in the core and assures
excellent coil heat transfer. Narrow, flush wedges allow unimpeded
air flow along the air gap, and wedging eliminates the reduction
of rotor iron heat dissipating surfaces that would normally be
associated with core banding.
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