SCR Digital Power Regulator S.c.r Digital Power Regulator ATTACHMENT DSC Series Single Phase By Single Wire TSC Series Three Phases By Three Wires EPS Series Single Phase By two Wires EPS Series Dual Phases By two Wires EPS Three Phases By Three Wires TPS Series Single Phase By Two Wires TPS Series Dual Phase By Three Wires TPS Series Three Phases By Three Wires