Metal working – Method of mechanical manufacture – Electrical device making
Patent
1999-07-30
2000-10-31
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
336205, 29650, H01F 4102
Patent
active
061383430
ABSTRACT:
A method and apparatus for manufacturing a variable insulated helically wound electrical coil is disclosed. Insulated rectangular wire is fed from a supply reel to a coating zone and within the coating zone liquid resin insulation is selectively applied to the wire so it has additional insulation only in those areas of the coil where the dielectric strength is needed. The insulated wire is fed through a curing station to allow curing of the additional insulation prior to winding the cured insulated wire into a coil. The cured insulated wire is wound into a coil of predetermined shape at a winding station whereby the portions of the wire having the additional insulatin are located in the areas of the coil where the greatest dielectric strength is needed. The timing of the resin application to the wire is coordinated with the winding of the coil so that the proper insulation thicknesses are achieved at the required locations in the coil. There is also disclosed a variably insulated helically wound high voltage electrical coil for a transformer wherein a variable thickness of cured synthetic resin insulation is applied to the turns in each layer of the coil so that the insulation increases in thickness from substantially zero at one end of the layer where layer-to-layer voltage stresses will be low and the required maximum thickness at the opposite end of the layer where voltage stresses will be high and this progression and insulation thickness is repeated on each adjacent layer of the coil.
REFERENCES:
patent: 2949593 (1960-08-01), Staley et al.
patent: 3153212 (1964-10-01), Davis
patent: 3504104 (1970-03-01), Suzuki
patent: 3860744 (1975-01-01), Schuler
patent: 3891955 (1975-06-01), Horton, III
patent: 4204087 (1980-05-01), Lin et al.
patent: 4406056 (1983-09-01), Buckley et al.
patent: 4412094 (1983-10-01), Dougherty et al.
patent: 4503605 (1985-03-01), Buckley
patent: 4554730 (1985-11-01), Westervelt et al.
patent: 4818909 (1989-04-01), Balke
patent: 5428337 (1995-06-01), Vinclarelli et al.
patent: 5504469 (1996-04-01), McGrane
Hill Norris L.
Linsenbardt Thomas L.
ABB Power T&D Company Inc.
Hall Carl E.
LandOfFree
Method for manufacturing a variable insulated helically wound el does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manufacturing a variable insulated helically wound el, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing a variable insulated helically wound el will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2039196