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Fresh air for thermal power plant

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World Cement,

Providing a spare for the exceptionally large fan motor at EUGENIO MONTALE, a 600 MWe thermal power plant in Italy, special motor manufacturer Menzel Elektromotoren recently built an exact replica.

Fresh air for thermal power plant

The 8-pole squirrel cage motor features a D5 design with a base frame and pillow blocks. At 3500 kW, 6000 V and about 25 t of weight, the extremely large specimen is also exposed to ambient temperatures of up to 60°C. Menzel, a family-owned company from Berlin, received the commission because they were the only provider able to implement all of customer ENEL Produzione SPA's technical requirements, despite the motor’s enormous size. This included in particular a completely identical efficiency.

The original motor manufactured by ASGEN ITALY in 1973 has special design features such as external sleeve bearings, custom external dimensions and a dedicated base frame. It also features a very large inertia moment of J=11250 kg/m². Taking into account all these factors, Menzel constructed the spare machine with identical mounting and shaft dimensions and the exact same axis height. The sleeve bearing and terminal boxes as well as the oil and water connections were positioned in accordance with the original motor. Menzel also fulfilled the special request by the customer for a tangent-delta check and partial discharge measurement.

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