SN EN 60519-4 : 1997 AMD 1 2000

1 Scope
2 Normative references
3 Definitions
4 Classification of electroheat equipment according
    to voltage bands
5 Classification of electroheat equipment according to
    frequency bands
6 General requirements
7 Prohibition of the use of earth as part of an active
    circuit
8 Marking inscriptions, labelling and circuit diagrams
9 Protection against overcurrent and overvoltage
10 Isolation and switching
11 Connections to the supply network
12 Protection against electric shock
13 Protection against thermal influences
14 Risk of fire and danger of explosion
15 Inspection commissioning, utilization and maintenance
    of arc furnace installations
16 Design requirements
Annexes
A Systems assuring improved safety to personnel working
    in the vicinity of electrodes and other live parts of
    secondary circuit
B Additional requirements for the safety of non-electrical
    components of furnace installations
ZA (normative) Normative references to international
   publications with their corresponding European
   publications

Applies to electroheat installations such as: - furnaces for direct arc heating such as direct arc furnaces, submerged arc furnaces, ladle arc heating furnaces; - furnaces for indirect arc heating.