#3 Generator’s Rotor Hoisting

On the 5th of January 2018, Nam Tha 1 Hydropower Station has smoothly carried out rotor hoisting and finished the work for #3 Generator Unit’s Rotor, marked the completion of large piece hoisting work for the whole project. #3 Generator Unit is completely marching into assembly state.

Nam Tha 1 Hydropower Station’s turbine generator model is SF56-32/7650, a three-phase salient pole synchronous generator, employs vertical axis half umbrella shape, closed loop, self-ventilated, air-cooled form. Since the 3rd November 2017, #3 Generator’s rotor has gone through several tests and examination including rotor bracket cleaning and large shaft connection, brake ring plate installation, yoke stack, magnetic pole mounting, electrical inspection test, overall cleaning paint and other processes, and finally completed all processes on the 30th December 2017. In order to complete rotor hoisting task safely and qualitatively, each parties actively organize technical and safety, practically organize and reasonably, implemented safeguards at all levels, conducted a scientific analysis and strict deployment on every hoisting link.

Preparation for Rotor hoisting


On the 5th of January 2018, conducted a joint check and acceptance for rotor body before hoisting, rechecked the completion of #3 generator’s rotor body assembly, quality complies with requirements in design and standard, and is ready for hoisting. In the morning 9:30, after finished arrangement of personnel, preparation, and site technical safety disclosure, officially commence rotor hoisting. At 10:10, #3 generator’s rotor smoothly hoisted on top of #3 generator pit, marked the completion of #3 generator’s rotor hoisting for Namtha1 Hydropower Station.

Rotor Hoisting

The completion of #3 generator’s rotor hoisting will promote successful implementation of the final assembly of #3 generator unit, dry test, water-filling start test, and will also build a strong foundation for power station to achieve its commissioning and generation goal.

Rotor Hoisting in Place


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