I.S. EN 60974-1:2012

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Environmental conditions
5 Tests
6 Protection against electric shock
7 Thermal requirements
8 Thermal protection
9 Abnormal operation
10 Connection to the supply network
11 Output
12 Control circuits
13 Hazard reducing device
14 Mechanical provisions
15 Rating plate
16 Adjustment of the output
17 Instructions and markings
Annex A (informative) - Nominal voltages of supply networks
Annex B (informative) - Example of a combined dielectric test
Annex C (normative) - Unbalanced load in case of a.c. tungsten
        inert-gas welding power sources
Annex D (informative) - Extrapolation of temperature to time
        of shutdown
Annex E (normative) - Construction of supply circuit terminals
Annex F (informative) - Cross-reference to non-SI units
Annex G (informative) - Suitability of supply network for the
        measurement of the true r.m.s. value of the supply current
Annex H (informative) - Plotting of static characteristics
Annex I (normative) - Test methods for a 10 Nm impact
Annex J (normative) - Thickness of sheet metal for enclosures
Annex K (informative) - Examples of rating plates
Annex L (informative) - Graphical symbols for arc welding equipment
Annex M (informative) - Efficiency
Annex N (normative) - Touch current measurement in fault condition
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Defines safety and performance requirements of welding power sources and plasma cutting systems.