Test bench for huge gearbox

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Gearbox manufacturer Winergy, a subsidiary of German company Flender, inaugurated a 7.5 MW test bench at its works in Voerde-Friedrichsfeld last month in a ceremony attended by federal environment minister Jürgen Trittin. At the test bench, the gearbox units are installed back to back on a horizontal plane and linked to two electricity machines which can operate as motor and generator. All gearbox units produced by Winergy undergo special serial testing regarding noise, vibration and temperature behaviour and contact patterns, notes the company. "Development of the new test bench is directly connected to the new capacity dimensions being achieved," it says. In 2003, Winergy built a 5 MW gearbox for a prototype turbine, to be installed by Repower Systems this year.

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