Transformer
AssigneeABB Technology AG
InventorRafael Murillo
Life of this patent
Estimating the term…
Abstract
A transformer containing an electrical active part arranged in an insulating space and including primary and secondary winding wound around a magnetic core. and radially spaced apart from each other by a winding space having an insulation fluid. A block defines a compartment closed and separated from a remaining insulating space, the compartment being at least partially arranged within the winding space. The compartment contains an insulation fluid different from insulation fluid in the remaining insulating space, and having a higher dielectric breakdown field strength than the insulation fluid in the remaining insulating space.
Claims27
A transformer comprising:
- an electrical active part arranged in an insulating space and including a primary winding, a secondary winding and a magnetic core, said primary and secondary windings being wound around the magnetic core and being radially spaced apart from each other by a winding space which contains a first insulation fluid in a remaining insulating space of the transformer;
- and
- a block comprises a material defining a compartment closed and separated from the remaining insulating space, the primary and secondary windings being embedded in the material of the block, said compartment being at least partially arranged within the winding space, the closed compartment containing a second insulation fluid which is different from the first insulation fluid in the remaining insulating space of the transformer, the second insulation fluid in the closed compartment having a higher dielectric breakdown field strength than the first insulation fluid in the remaining insulating space.
A transformer comprising:
- an electrical active part arranged in an insulating space and including a primary winding, a secondary winding and a magnetic core, said primary and secondary windings being wound around the magnetic core and being radially spaced apart from each other by a winding space which contains a first insulation fluid in a remaining insulating space;
- and
- a block comprises a material defining a compartment closed and separated from the remaining insulating space, said compartment being at least partially arranged within the winding space, the closed compartment containing a second insulation fluid which is different from the first insulation fluid in the remaining insulating space of the transformer, the second insulation fluid in the closed compartment having a higher dielectric breakdown field strength than the first insulation fluid in the remaining insulating space, and
- wherein the first and/or second insulation fluid comprises a fluoroketone.
Method of performing voltage transformation, comprising:
- applying a voltage to a transformer which includes an electrical active part arranged in an insulating space and including a primary winding, a secondary winding and a magnetic core, said primary and secondary windings being wound around the magnetic core and being radially spaced apart from each other by a winding space which contains a first insulation fluid in a remaining insulating space of the transformer;
- a block comprises a material defining a compartment closed and separated from the remaining insulating space, the primary and secondary windings being embedded in the material of the block, said compartment being at least partially arranged within the winding space, the closed compartment containing a second insulation fluid which is different from the first insulation fluid in the remaining insulating space of the transformer, the second insulation fluid in the closed compartment having a higher dielectric breakdown field strength than the first insulation fluid in the remaining insulating space;
- and
- operating the transformer at a voltage in a range from 10kV to 300kV.
Dependencies are inferred from the claim text.