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US 6,157,282 AGranted
Transformer cooling method and apparatus therefor
AssigneeSquare D Company
InventorPhilip J. Hopkinson
Life of this patent
Estimating the term…
Abstract
This invention relates to a cooling system for a transformer. A winding defining a coil, including a duct having an open top and bottom, is sealed to a sleeve, thus forming a closed circulatory path. A fluid is retained and circulated within the circulatory path.
Claims30
A method of cooling a transformer, comprising the steps of:
- forming a winding defining a coil, the winding insulated with a resin having a dielectric strength and the coil including a duct having an open top and an open bottom;
- providing a sleeve having an upper manifold and a lower manifold;
- forming a closed circulatory path between the sleeve and the duct;
- sealing the upper manifold to the top of the coil and the lower manifold to the bottom of the coil;
- providing a fluid having a dielectric strength substantially equal to the dielectric strength of the resin;
- and,
- retaining the fluid within the circulatory path.
4 more elements
A method of cooling an epoxy cast resin transformer, comprising the steps of:
- forming a primary winding and a secondary winding defining a coil, the coil including a duct having an open top and an open bottom;
- providing a sleeve having an upper manifold and a lower manifold;
- forming a closed circulatory path between the sleeve and the duct;
- sealing the upper manifold to the top of coil and the lower manifold to the bottom of the coil;
- providing a fluid having a dielectric strength substantially equal to the dielectric strength of the epoxy;
- and,
- retaining the fluid within the circulatory path.
4 more elements
A method of cooling an epoxy cast resin transformer, comprising the steps of:
- forming a primary winding and a secondary winding defining a coil, the primary and secondary winding defining a duct having an open top and an open bottom;
- providing a sleeve having an upper manifold and a lower manifold;
- forming a closed circulatory path between the sleeve and the duct;
- sealing the upper manifold to the top of coil and the lower manifold to the bottom of the coil;
- providing a fluid having a dielectric strength substantially equal to the dielectric strength of the epoxy;
- and,
- retaining the fluid within the circulatory path.
4 more elements
A cooling system for an epoxy cast resin transformer, comprising:
- a winding defining a coil;
- the coil including a duct having an open top and an open bottom;
- a sleeve having an upper manifold and a lower manifold;
- the upper manifold sealed to the top of the coil and the lower manifold sealed to the bottom of the coil, defining a closed circulatory path;
- and,
- a fluid having a dielectric strength substantially equal to the dielectric strength of the epoxy retained within the closed circulatory path.
3 more elements
A cooling system for an epoxy cast resin transformer, comprising:
- a primary winding;
- a secondary winding;
- the primary winding and secondary winding defining a coil;
- the coil including a duct having an open top and an open bottom;
- a sleeve having an upper manifold and a lower manifold;
- the upper manifold sealed to the top of the coil and the lower manifold sealed to the bottom of the coil, defining a closed circulatory path;
- and,
- a fluid having a dielectric strength substantially equal to the dielectric strength of the epoxy retained within the closed circulatory path.
5 more elements
A cooling system for an epoxy cast resin transformer, comprising:
- a primary winding;
- a secondary winding;
- the primary winding and secondary winding defining a coil;
- the primary winding and secondary winding defining a duct having an open top and an open bottom;
- a sleeve having an upper manifold and a lower manifold;
- the upper manifold sealed to the top of the coil and the lower manifold sealed to the bottom of the coil, defining a closed circulatory path;
- and,
- a fluid having a dielectric strength substantially equal to the dielectric strength of the epoxy retained within the closed circulatory path.
5 more elements
Dependencies are inferred from the claim text.