Strip wound coil with reinforced edge layer insulation

Details Strip wound coil with reinforced edge layer insulation Strip wound coil with reinforced edge layer insulation

1994-10-26

1997-01-21

Stanzione, Patrick J.

Inductor devices

Coil or coil turn supports or spacers

Coil turns cemented to support or embedded in plastic

336212, 336217, 336234, H01F 2714

Patent

active

055963056

ABSTRACT:
A dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors coincident with layer insulation sheets that extend beyond the edge of the sheet conductor. Cooling air ducts are fabricated in the low voltage windings as it is wound. To prevent the extension of the layer insulation sheets from collapsing over the formed air ducts during a vacuum and pressure resin impregnation process, reinforcing means are added to the extensions to prevent them from collapsing.

REFERENCES:
patent: 2863130 (1958-12-01), Gray et al.
patent: 4039990 (1977-08-01), Philp
patent: 4406056 (1983-09-01), Buckley et al.

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