In 1976, Siemens supplied the first gas-insulated substation for a rated voltage of 420 kV.
An ongoing process of improvement has led to today's 8DQ1 suitable up to the 550 kV voltage range. With this type, a gas-insulated switchgear, notable for its high degree of versatility and reliability, has been developed.
Our 8DQ1 belongs to the world leading gas-insulated switchgears in terms of:
- economic efficiency
- high reliability
- safe encapsulation
- low operating costs
- ease of access and
- high availability
- Leaflet GIS 8DQ1 up to 420 kV
- Leaflet GIS 8DQ1 up to 550 kV
- Standard Unit Double Busbar
- Flyer 8DQ1 420 kV63 kA4000 A