EN ISO 5826:2014

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Construction, additional equipment
6 Physical environment and operating conditions
7 Tests
8 Protection against electric shock
9 Thermal rating
10 Rated output voltage
11 No-load input current (I[10])
12 Short-circuit voltage (U[cc])
13 Output current under load condition
14 Cooling liquid circuit
15 Dynamic behaviour
16 Rating plate
17 Instruction manual
Annex A (informative) - Example of a rating plate
Annex B (normative) - Corrections for higher altitudes
         and cooling medium temperatures
Annex C (informative) - Notes on physical concepts and
         comments on some definitions
Annex D (informative) - Type code for single-phase
         transformers for alternating welding current
Bibliography

ISO 5826:2014 gives specifications applicable to transformers of IEC 61140 protection class I or II of the following types for use in resistance welding equipment: single-phase transformers for a.c. welding, typically operating at 50 Hz or 60 Hz; single-phase transformers with connected rectifier for d.c. welding, typically operating at 50 Hz or 60 Hz; single-phase inverter transformers with connected rectifier for d.c. welding, typically operating at 400 Hz to 2 kHz; three-phase transformers with connected rectifier for d.c. welding, typically operating at 50 Hz or 60 Hz.