Use of expandable epoxy systems for barrier materials in high voltage liquid-filled transformers
US6271463A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jun 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/327
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a high voltage liquid-filled transformer including a housing and a dielectric liquid impregnated barrier material within the housing. The barrier material is prepared from an expandable epoxy resin formulation comprising: (i) at least one polyglycidyl compound; (ii) at least one curing agent for the polyglycidyl compound; and (iii) at least one blowing agent. An additional aspect of the present invention is a novel barrier component for a liquid-filled transformer. The present invention also relates to a method for manufacturing the novel barrier component. The present invention also relates to a method of manufacturing the transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.