28 MVA is the largest we can carry with our permit, 115/46 kV high side and 25/13.2 kV low side, we have been using a souther states circuit switcher for the high side and a Square D or Siemens Vac breaker on the low side, and Schweitzer relaying.
Thank you for the information, so are you stating that ABB is making mobile subs and that you have heard that SPX are starting to make them, or that you have heard that ABB and SPX are starting? I ask this because there is information on ABB's site about mobile subs but I can't find anything stating that they are manufacturing them and where the manufacturing is taking place. Do you have a link? Any information will be appreciated, thanks again!