Optical current transformer for gas-insulated apparatus
US9116176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2011 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B13/0356
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
At least one conductor is disposed in sealed vessel, which is filled with insulating gas, an hand hole is provided to a part of sealed vessel and is closed by a sealed cover, and optical fibers are disposed that form a closed loop surrounding conductor in sealed vessel. Optical fibers are hermetically led out of sealed vessel from sealed cover and are provided with at least a light source unit and an optical signal processor unit at the lead-out end. An airtight hollow tube disposed looping around leaving a predefined distance of separation is provided to conductor in sealed vessel, the end of tube is hermetically connected to sealed cover by sealing/bonding means, and optical fibers can be inserted in sealing/bonding means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.