Stationary Induction Electric Apparatus and Method for Making the Same
US-2016268037-A1 · Sep 15, 2016 · US
Stationary induction electrical apparatus
US10090095B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10090095-B2 |
| Application number | US-201715485855-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 12, 2017 |
| Priority date | Apr 13, 2016 |
| Publication date | Oct 2, 2018 |
| Grant date | Oct 2, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
A stationary induction electrical apparatus includes a disc winding having a structure in which a flow path for a cooling medium is provided between coils where a low voltage is generated between shield wires, an L-shaped insulation barrier is provided between coils where a high voltage is generated between the shield wires, a horizontal portion of the L-shaped insulation barrier is provided so as to closely contact an upper surface or a lower surface of the disc coil, a tip end portion in an axial direction of the L-shaped insulation barrier is provided so as to closely contact an inner surface of the disc coil which is adjacent to a pressboard insulation cylinder, and a height of the tip end portion in the axial direction is lower than a thickness of one coil.
First claim
Opening claim text (preview).
What is claimed is: 1. A stationary induction electrical apparatus including a disc winding in which plural disc coils provided with a plurality of electric wires wound in a helical manner on the same plane in a circumferential direction are stacked in an axial direction of a pressboard insulation cylinder, coils in which an inter-coil spacer is arranged between the disc coils are provided, a shield wire of a certain-ordinal layer in the axial direction and shield wires of a fourth, sixth layers counted from the shield wire among shield wires wound with plural turns between wires of respective disc coils are connected by a crossover line for shielding, and a high voltage and a low voltage are alternately generated between adjacent shield wires arranged in the axial direction, the apparatus comprising: a flow path for a cooling medium provided between coils where a low voltage is generated between shield wires; and an L-shaped insulation barrier provided between coils where a high voltage is generated between the shield wires, wherein a horizontal portion of the L-shaped insulation barrier is provided so as to closely contact an upper surface or a lower surface of the disc coil, a tip end portion in the axial direction of the L-shaped insulation barrier is provided so as to closely contact an inner surface of the disc coil which is adjacent to the pressboard insulation cylinder, and a height of the tip end portion in the axial direction is lower than a thickness of one coil.
Assignees
Inventors
Classifications
Insulation between winding turns, between winding layers · CPC title
Wires (H01F27/2866 takes precedence) · CPC title
Cooling (cooling transformers and inductances in general H01F27/08) · CPC title
- H01F27/2871Primary
Pancake coils · CPC title
- H01F27/289Primary
with auxiliary windings (for pancake coils H01F27/2871) · CPC title
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- What does patent US10090095B2 cover?
- A stationary induction electrical apparatus includes a disc winding having a structure in which a flow path for a cooling medium is provided between coils where a low voltage is generated between shield wires, an L-shaped insulation barrier is provided between coils where a high voltage is generated between the shield wires, a horizontal portion of the L-shaped insulation barrier is provided so…
- Who is the assignee on this patent?
- Hitachi Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01F27/2871. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 02 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).