Gas-insulated line (GIL) of the 2/sup nd/ generation

With the commissioning of the 500 m long gasinsulated transmission line (GIL) at the Geneva Airport, Siemens is the first manufacturer of the second generation GIL world-wide. This project concluded successfully the recent development works on this future transmission technology. The redesign of GIL brought a reduction of costs by more than 50 %. The main changes were replacing pure SF/sub 6/ by a gas mixture of N/sub 2/ and SF/sub 6/ as insulating medium and by adopting pipeline laying methods into the laying process.