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Serbia: HPP „Zvornik“ revitalization

, Investors

Large and important project of Hydro power plant “Zvornik” revitalization wassuccessfully continued in mid-May, when turbine for generator no. 1, has beentransported, after completing installation, from the mounting hall in the turbine pit. Turbine is thus connected though turbine cover with existing concreted stator ring, which is, besides stator vanes, the only part of existing generator that will not bereplaced during revitalization project.

New Kaplan turbine have five vanes, weights 35 tons, with a diameter 4,85 metersand maximum output power of 31,4 MW. Weighted average efficiency level of newturbine is 92,71 percent.Within the large project of HPP “Zvornik” revitalization, besides the completion ofturbine assembly, so far generator no. 1 is completely dismantled as well as auxiliarysystems; construction works on diameter increase of turbine impeller are completed,as well as preparatory construction works in generator star point for new equipmentplacement. Also, concreted turbine parts are embedded, and a block-transformer ofgenerators 1 and 2 are mounted. Currently, works on mounting of turbine control equipment, cooling system,compressed air system, generator, stator and rotor mounting, generator voltageequipment and switchgear are in process. Factory Acceptance Test of almost allequipment, except HV and MV equipment, excitation system and part of equipmentfor system control, is successfully completed. According to the foreseen dynamics, the completion of entire project of HPP “Zvornik”revitalization is planned for autumn 2019.

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