Arrangement for voltage measurement in a GIS installation
US5136236A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1990 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Sep 19, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a gas-insulated switchgear having an isolated-phase bus, a current-carrying bus (2) with a given external radius R.sub.1 is arranged coaxially in a cylindrical enclosure with a given external radius R.sub.2, the voltage of the current carrying bus is measured using optical fiber voltage transducers. For this purpose, at least three identical piezoelectric sensor elements are provided. They are arranged essentially at a distance corresponding to the internal radius R.sub.2 from an axis of the current carrying bus in the enclosure at identical angular distances. The sensor elements are preferably accommodated together with an optical fiber curent transducer in a metal ring that can be inserted into the enclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.