Transformer assembly with shrinkage compensation
AssigneeHitachi Energy Switzerland AG
InventorsGeorges Dormia, Lakhdar Gaoua, Lorenzo Dus, Toufann Chaudhuri, Yann Cuenin
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Abstract
A transformer assembly with shrinkage compensation during drying or curing of the windings including: a core having two yokes and two legs, a winding provided about at least one of the two legs of the core, the winding being insulated by an insulating material, a metal profile per yoke, extending in parallel to the respective yoke and being mounted to it, and two pistons seated in the metal profiles, the pistons being movable along their axial direction which is parallel to the longitudinal axis of the at least one winding, wherein the at least two pistons exert a force on the at least one winding in an axial direction of the windings.
Claims20
A transformer assembly with shrinkage compensation during drying or curing of the windings, comprising:
- a core having at least two yokes and at least two legs,
- at least one winding provided about at least one of the legs of the core, the at least one winding being insulated by an insulating material,
- at least one metal profile per yoke, extending in parallel to the respective yoke and being mounted to it,
- at least two pistons seated in at least one of the metal profiles, the pistons being movable along their axial direction which is parallel to the longitudinal axis of the at least one winding, wherein the at least two pistons exert a force on the at least one winding in an axial direction of the windings.
A method of compensating the shrinkage during drying or curing of windings in a transformer assembly, comprising:
- assembling a transformer assembly comprising, a core having at least two yokes and at least two legs,
- at least one winding provided about at least one of the legs of the core, the at least one winding being insulated by an insulating material,
- at least one metal profile per yoke, extending in parallel to the respective yoke and being mounted to it,
- at least two pistons seated in at least one of the metal profiles, the pistons being movable along their axial direction which is parallel to the longitudinal axis of the at least one winding, wherein the at least two pistons exert a force on the at least one winding in an axial direction of the windings;
- and
- during a drying process or a curing process, applying a force on the winding through the pistons.
Dependencies are inferred from the claim text.