Tubos Trans Electric has more than 50 years of experience in manufacturing power transformers and autotransformers, whether these work with off circuit or on load tap changer and with any of the cooling systems alternatives known in the industry (ONAN, ONAF, OFAF, ODAF, amongst others).

There are several design alternatives for these transformers; they can be manufactured with an oil conservator or in a hermetically sealed version, by adding a nitrogen chamber.