EN 60519-4:2013

FOREWORD
1 Scope and object
2 Normative references
3 Terms and definitions
4 Classification of electroheating equipment
5 General requirements
6 Isolation and switching
7 Connections to the electrical supply network
   and internal connections
8 Protection against electric shock
9 Equipotential bonding
10 Control circuits and control functions
11 Protection against thermal influences
12 Protection against other hazards
13 Marking, labelling and technical documentation
14 Commissioning, inspection, operation and
   maintenance
Annex A (normative) - Protection against electric
        shock - special measures
Annex AA (normative) - Systems to assure improved
         safety for personnel working in the vicinity
         of electrodes and other live parts of secondary
         circuit
Annex BB (normative) - Additional requirements for
         the safety of non-electrical components of
         furnace installations
Annex CC (normative) - Additional requirements
         for safety with respect to design of an
         installation
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC 60519-4:2013 provides particular safety requirements for electric arc furnace installations and its operating and maintenance personnel. These safety provisions concern the protection of persons and the environment against dangers of electrical origin and also against certain dangers of non-electrical origin. This fourth edition cancels and replaces the third edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - The structure has been amended and adjusted to IEC 60519-1:2010; - The classification (Clause 4) has been adapted to details with respect to secondary voltage in electric arc furnace installations; - All provisions have been redrafted and the text is more concise with respect to EAF; - Annexes AA, BB and CC have been restructured, with respect to details concerning high voltage designs and non-electrical issues, however to be aware of in those installations.