Test tap adapter for extracting dissolved gases from insulating oil and measuring electrical parameters of a transformer bushing
US6968728B2 · kind B2 · utility
3Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2003 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Feb 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/4016
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to an apparatus for measuring the capacitance and the dissipation factor in a transformer bushing and extracting gas dissolved in the insulating fluid of said bushing. The apparatus comprises a porous cylindrical member associated with a tap connector and covered by a thin layer of a gas permeable but liquid impermeable membrane. The porous member allows passive diffusion of the permeated gas extracted from the insulating fluid of a transformer bushing to a gas storage chamber for further analysis, thereby helping to prevent high costs related to damage or destruction of the bushing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.