In dry-type transformers, cooling is by natural air circulation and the windings are usually insulated with class H or F materials. Class H materials are designed to operate, under normal conditions, at temperatures up to 180°C and class F materials at temperatures up to 155°C.

Dry-type transformers include resin transformers, where the windings are usually insulated with class F materials and are moulded in epoxy resin.

Dry-type transformers are for indoor installationDry-type transformers shall be of class C2, E2 and F1 according to IEC 60076 (paragraphs -11 and -16).

Our company cooperates with major transformer manufacturers such as LEGRAND, SCHNEIDER ELECTRIC, HITACHI/ABB, SIEMENS etc.