Method of testing gas insulated systems for the presence of conducting particles utilizing a gas mixture of nitrogen and sulfur hexafluoride
US4135130A · kind A · utility
9Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1977 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Jun 29, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/1254
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of testing a gas insulated system for the presence of conducting particles. The method includes inserting a gaseous mixture comprising about 98 volume percent nitrogen and about 2 volume percent sulfur hexafluoride into the gas insulated system at a pressure greater than 60 lb./sq. in. gauge, and then applying a test voltage to the system. If particles are present within the system, the gaseous mixture will break down, providing an indicator of the presence of the particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.