公开(公告)号：EP3097572A1

公开(公告)日：2016-11-30

申请号：EP15740235.5

申请日：2015-01-12

Applicant: ABB Inc.

Inventor： TENYENHUIS, Ed G.

IPC: H01F41/00 ,  H01F27/06 ,  H02B3/00 ,  H02B7/00 ,  H01F27/12

CPC classification number: H01F27/004 ,  H01F27/12

Abstract: A method replaces a saturable core reactor (SCRs) in a rectifier power transformer disposed in a transformer vault at its field location. The transformer has an oil-filled tank housing the SCRs. The tank has a manhole opening therein. A busbar structure is associated with each SCR. The method drains the oil from the tank. A busbar structure is disconnected from an associated SCR. The disconnected busbar structure is moved away from the transformer. The SCR is removed from the tank through the manhole opening and is lowered. The SCR is then conveyed from the transformer vault. A replacement SCR is moved to be adjacent the manhole opening and is then slid through the manhole opening and into the tank to a certain location. The busbar structure is moved so as to be associated with a replacement SCR and is connected to the replacement SCR.