I have seen that ABB offers dry-type transformers for the 72.5kV voltage level.
What is the operation experience with such transformers ?
There are a number of transformers in operation since several years. One of the most prominent installations is the one integrated into the FIFA 2014 Soccer World Cup stadium in Salvador da Bahia, Brazil. The two transformers 69/13.8kV, 25MVA are in energized since spring 2013 and reliably supply the 55’000 seats stadium as well as the neighboring quarters.
(complement with link to HiDry papers and product information)
If you want to purchase a product, need any pricing information or need help or support from ABB, please contact your local partner.