Raelec designed and manufactured the first thyristor controlled rectiformer for a company called ER&S in Port Kembla. The two 14,000A, 200V DC single way rectiformers were the first of this size to be supplied by an Australian company.

A combination of a transformer and a rectifier in a single package, the rectiformer replaced motor and DC generator sets. Typical output ratings involved voltages ranging from 30VDC to 1000VDC with currents up to 120,000A per unit. Rectiformers are used for the electrolytic production and refining of copper, zinc, magnesium, aluminium and nickel. They are also used in the production of chlorine, an important component of the chemical refining and pulp/paper processing industries.

The operation of the rectiformer is controlled by the double redundant, microprocessor based Integrated Control Electronics Module (ICEM), which controls the firing of the thyristors. The self-monitoring capability of the module provided extensive diagnostics for detection, alarm and display of any fault.