Pertains to the following types of reactors: - shunt reactors; - series reactors including current-limiting reactors, neutral-earthing reactors, power flow control reactors, motor starting reactors, arc-furnace series reactors; - filter (tuning) reactors; - capacitor damping reactors; - capacitor discharge reactors; - earthing transformers (neutral couplers); - arc-suppression reactors; and - smoothing reactors for HVDC and industrial application.