420 kV Vacuum Circuit Breaker for AC Grids
Sector: Power Generation (CCGT) • Location: Marsillon and Dagali, France and Norway
Source: CORDIS
Development of the first 420 kV vacuum circuit breaker using vacuum interrupters for arc quenching, designed to maintain the dimensions of existing SF6-filled units for seamless retrofitting, minimizing installation costs and downtime. Validation and type testing were completed in early 2026, with pilot installations planned later in the year.
- Status
- Prospective
- Sector
- Power Generation (CCGT)
- Location
- Marsillon and Dagali, France and Norway
- Updated
- 22 Jul 2026
- Source
- CORDIS
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Project Information
Participants
| Not available for this record. |
Status
Original status | testing and validation completed |
Taiyo status | Prospective |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | Development of the first 420 kV vacuum circuit breaker using vacuum interrupters for arc quenching, designed to maintain the dimensions of existing SF6-filled units for seamless retrofitting, minimizing installation costs and downtime. Validation and type testing were completed in early 2026, with pilot installations planned later in the year. |
Original sector | Energy |
Location
Country | France and Norway |
City | Marsillon and Dagali |
Source
Source | CORDIS |
URL |
More Details
Record type | Project |
Sector | Power Generation (CCGT) |
Article published date | 2026-07-12 |
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