Resumen (inglés):
    Applies to:
-           installations for induction and conduction heating of solids. at low, medium and high frequencies (for conduction
heating, use of direct current is also included);
-         installations for induction melting, holding and superheating at low, medium and high frequencies;
-           those parts of the conveying or handling equipment of the electroheat installation which are within the influence of the heating section.