Search academic texts

Information × Registration Number 0309U000372, 0107U006600 , R & D reports Title Updating of four diverter switches of RNOR-20 OLTC devices of EOCNK-21000/10 furnace transformers in order to exclude the transformer failure when the contacts of vacuum chambers are welded popup.stage_title Модернізація чотирьох контакторів пристроїв РПН РНОР-20 електропічних трансформаторів ЭОЦНК-21000/10 для виключення виходу зі строю трансформатора при зварюванні контактів вакуумних камер Head Aleksandr N. Pirozhenko, Registration Date 08-04-2009 Organization Open-end stock company "Ukrainian research design and technological transformer institute" popup.description2 Up-dating of diverter-switches through reconstruction of a mechanism and electric circuit of the diverter-switches without changing geometry of connecting points to tap selector and to transformer was executed. Vacuum cells were excluded from the diverter-switch and mechanical contacts were introduced, using thyristor key and proper supply and control elements for a thyristor key, as well as signaling of the system normal functioning. Such replacement maintains practically arcless switching during tap-changing. Product Description popup.authors popup.nrat_date 2020-04-02 Close