Crack resistant armor termination for pole face winding bars

Details Crack resistant armor termination for pole face winding bars Crack resistant armor termination for pole face winding bars

1983-04-19

1984-01-10

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310201, H02K 1512

Patent

active

044255195

ABSTRACT:
A band of fabric over the interface between the slot armor and the copper bar of a pole face winding is both resistant to migration of conductive contaminants under the edge of the slot armor and hospitable to the application and retention of an insulating paint layer over such interface. The band of fabric is preferably of woven glass fiber with a tenacious pressure sensitive adhesive on one side and with the other side bare. The adhesive is compatible with the material of the slot armor, sticks readily to the copper bar and to the bare surface of the woven glass fiber fabric band. The bare side of the fabric provides a good mechanical bond to the insulating paint layer and thereby encourages the establishment and retention of an unbroken paint layer over the interface. The combination provides a long electrical leakage current path between the copper bar and the iron of the pole.

REFERENCES:
patent: 2707204 (1955-04-01), Richardson et al.
patent: 2989657 (1961-06-01), Sampson
patent: 4001616 (1977-01-01), Lonseth et al.
patent: 4308476 (1981-12-01), Schuler
patent: 4345175 (1982-08-01), Jones

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