On 10 June 2010 Swiss rental company Senn tried out its new 1,200 tonne capacity Liebherr LTM 11200-9.1 telescopic mobile crane for the first time.
Mont Crosin in the Swiss Jura Mountains will be home to a group of eight new wind turbines. To install the 2 MW turbines built by Vestas at a hub height of 85 metres, the crane needed to move a gross load of 80 tonnes at a hook height of 113 metres. The LTM 11200-9.1 was rigged with 52 m of telescopic boom with Y-guy system, 20 m lattice extension, and 48 m luffing fly jib, as well as 182 tonnes of ballast.
Commenting on the choice of crane for this job, company owner Jörg Senn, said, "This 1,200 tonne telescopic crane from Liebherr only needs a very small area to be assembled and erected, and that is particularly important in areas such as here in the Jura where nature can be extremely sensitive."
Senn ordered the world's largest telescopic mobile crane mainly for wind power system installations as the renewable energy source is steadily increasing in importance in Switzerland. Senn is placed 158th in the International Cranes and Specialized Transport magazine original ranking of the world's largest crane-owning companies. It was listed for the first time in the June 2010 issue of the list that is now in its 14th year. Senn has 14 cranes, 11 of them Liebherrs, and a workforce of 250.