Oil-immersed transformers from 25 kVA till 1000 kVA
Dry-type transformers from 100 kVA till 2500 kVÀ
21.11.2007 Since October 2007 "Transformator service" has started to implement ISO 9001. 01.12.2005 Ukrainian certificate for oil-immersed transformers with power rating 250 - 400 kVÀ 01.10.2005 Russian certificate for oil-immersed transformers with power rating 25 - 160 kVÀ