Molded tap changer assemblies and methods for dry-type transformers
US11049647B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 23, 2018 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Apr 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/329
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A tap changer assembly of a dry-type transformer. The tap changer assembly includes a first molding including multiple taps, a semi-conductive coating applied to the first molding, a conductive shield provided overtop some of the semi-conductive coating, a grounding member comprising a ring of bosses interconnected by a grounding conductor connected to the conductive shield, a second molding applied over at least a portion of the conductive shield and the grounding conductor, the second molding forming a molded sealing surface, a conductive cover coupled to the ring of bosses; and a sealing member sealing a space between the molded sealing surface and the conductive cover. Dry-type transformers and methods of forming a tap changer assembly of a dry-type transformer are provided, as are numerous other aspects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.