Power transformers and autotransformers whether these work with off circuit or on load tap changer and with any of the cooling system alternatives known in the industry (ONAN, ONAF, OFAF, ODAF, among others), with expansion tank or with nitrogen chamber in its hermetic design.

They are used in electrical distribution networks to step down three phase voltage in terms of consumption, both in metropolitan areas and in industries.

Three phase Zig-Zag connection reactors for protection against grounding faults in distribution systems where overhead networks with isolated neutral predominate.