Hitachi Energy Switzerland Ag

Abb Technology Ag

Abb S.p.a.

Carlo Granata

Costante Piazza

Thomas Betz

Giuliano Guerra

Roberto Cameroni

A tower mounted high voltage gas-insulated switchgear including a supporting structure connected to the lattice structure of a high voltage transmission tower, a first and a second combined interruption and disconnection modules respectively including for each phase, a first and a second combined interruption and disconnection units, a first combined disconnecting and earthing switch having a first fixed contact operatively coupled to said first terminal, a second fixed contact at ground potential and a first movable contact operatively couplable to said first and second fixed contacts for disconnecting and earthing operations; a fast earthing switch interposed between said first fixed contact and said first terminal, a circuit breaker unit electrically connected to said first movable contact of said first combined disconnecting and earthing switch and to a second combined disconnecting and earthing switch.

Growing community of inventors

Cavenago d'Adda, Italy

Carlo Granata