Method of manufacturing a laminated coil to prevent expansion du

Details Method of manufacturing a laminated coil to prevent expansion du Method of manufacturing a laminated coil to prevent expansion du

1993-03-17

1995-01-24

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29609, 336210, 336234, H01F 4102

Patent

active

053832663

ABSTRACT:
A dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The iron core is manufactured with stacked core steel. After the core is stacked, instead of using banding straps, a heat shrinkable material is wrapped around the core legs and is heated to enable the shrunken material to apply uniform compression over the core legs. This will facilitate coil loading, reduces audible core noise and reduce core losses. In place of shrink wrappable material, a film material with elastic properties could be used.

REFERENCES:
patent: 3820238 (1974-06-01), Caputo et al.
patent: 4039990 (1977-08-01), Philp
patent: 4488134 (1984-12-01), Pfeiffer
patent: 4496926 (1985-01-01), Kubo et al.
patent: 4649640 (1987-03-01), Ito et al.
patent: 4663604 (1987-05-01), VanSchaick et al.
patent: 4893400 (1990-01-01), Chenoweth
patent: 5036580 (1991-08-01), Fox et al.
patent: 5179776 (1993-01-01), Boenitz et al.

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