Stators bars of generator units and high voltage bushings of main transformers of ITAIPU : aspects of acquisition, factory acceptance test , controls and management during stocking – The influence of theses practices in the power generation

Itaipu is currently the world´s largest hydroelectric plant in power generation. For each generator unit are associated 1008 stators bars , which has voltage class 18 kV and a constructive particularity that is the existence of hollow conductors in its interior, which are used for the circulation of demineralised water and low condutivity for cooling of the stator winding . This characteristic differentiates the winding of the Itaipu's generator from other of the world. For each generator it is associated a 3-phase group of monophasic transformers (18 kV/525 kV ; Brazilian side 60 Hz : 768 MVA – Paraguayan side 50 Hz : 825 MVA ). Currently, the most of bushings installed in these transformers has main insulation type RIP (Resin impregnated paper), which must withstand, within another…