scope:

This International Standard applies to electrical installations comprising industrial induction channel furnaces and induction crucible furnaces for melting, holding and superheating. Its object is the standardization of test methods to determine the essential parameters and technical characteristics of electroheat installations comprising furnaces of the type indicated above. With the exception of the safety tests given in items a), b) and c) of 4.2.1, the list of tests given in this standard is neither mandatory nor restrictive. Tests may be selected from this list as required for the characterization and evaluation of a furnace. Additional tests may be carried out, preferably in agreement between the manufacturer and the user of the furnaces concerned. The significant changes with respect to these standards are as follows: ? the latest edition of IEC 60519-1 (2003) has been taken into account; - definitions have been brought into line with the second edition of IEC 60050-841; - one additional test (5.8 Determination of the rated useful charge Gnu) has been introduced; - informative Annex B with the list of symbols used in the standard has been added.