IEC 60519-1:2010 specifies the general safety requirements applicable to industrial electroheating installations. This fourth edition cancels and replaces the third edition published in 2003. It constitutes a technical revision. The main technical changes with respect to the previous edition are as follows: - scope and object have been modified, voltage limits and classification removed; - terms/definitions, normative references and bibliography have been updated and completed; - Clause 4 on classification of equipment according to process frequency has been modified; - Clause 5 (General requirements) has been redrafted and new provisions have been added (e.g. relating to single fault conditions and EMF issues), following the recommendations of IEC Guide 104; - Clause 8 has been redrafted, the contents of subclauses 8.2 and 8.3 has been moved to a new normative Annex A and 8.4 has been deleted; - a new Clause 12 (Protection against other hazards) has been added; - clauses dealing with marking and documentation have been amended. The French version of this standard has not been voted upon.