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US 6,629,344 B2Granted
Method for making impregnated electrical components
AssigneeEvox Rifa AB
InventorLennart Ringdahl
Life of this patent
Estimating the term…
Abstract
A method for preparing an impregnated electrical component such as windings or stacks for capacitors, coils etc. includes the step of subjecting the component in an impregnating step to an impregnating thermo-hardening agent, and thereafter in a curing step placing the component in a curing bath for curing the impregnating thermo-hardening agent present within the component.
Claims16
A method for preparing an impregnated electrical component, the method comprising the steps of:
- subjecting the component in an impregnating step to an impregnating thermohardening agent, and thereafter in a curing step placing said component in a curing bath for curing the impregnating thermohardening agent present within said component, and
- providing said electrical component by winding metallized films into windings or stacking metallized films into stacks with other substantially identical metallized films, said films comprising paper and/or plastic material carrying on at least one surface a metal layer,
- optionally end-spraying, at least partly, the ends of said windings or two sides of said stacks,
- before said impregnation, such that access to the interior of the component for the impregnating agent is provided.
1 more element
A method for preparing an impregnated electrical component, the method comprising the steps of:
- subjecting the component in an impregnating step to an impregnating thermohardening agent, and thereafter in a curing step placing said component in a curing bath for curing the impregnating thermohardening agent present within said component, and
- providing said electrical component by winding films interleaved with metal foil into windings or stacking said films interleaved with metal foil into stacks with other substantially identical films, said films comprising paper or plastic material,
- optionally end-spraying, at least partly, the ends of said windings or two sides of said stacks,
- before said impregnation, such that access to the interior of the component for the impregnating agent is provided.
1 more element
Dependencies are inferred from the claim text.