IEC 60076-1:2011

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Service conditions
5 Rating and general requirements
6 Requirements for transformers having a tapped winding
7 Connection phase displacement symbols
8 Rating plates
9 Safety, environmental and other requirements
10 Tolerances
11 Tests
12 Electromagnetic compatibility (EMC)
13 High frequency switching transients
Annex A (informative) - Check list of information to be
                        provided with enquiry and order
Annex B (informative) - Examples of specifications for
                        transformers with tappings
Annex C (informative) - Specification of short-circuit
                        impedance by boundaries
Annex D (informative) - Examples of three-phase transformer
                        connections
Annex E (normative) - Temperature correction of load loss
Annex F (informative) - Facilities for future fitting of
                        condition monitoring systems to
                        transformers
Annex G (informative) - Environmental and safety
                        considerations
Bibliography

IEC 60076-1:2011 applies to three-phase and single-phase power transformers (including auto-transformers) with the exception of certain categories of small and special transformers. For those categories of power transformers and reactors which have their own IEC standards, this part is applicable only to the extent in which it is specifically called up by cross-reference in the other standard. This new edition includes the following significant technical additions with respect to the previous one:
- definition of harmonic content;
- subclause on transport;
- functional method of specification;
- connection symbols for single phase transformers;
- safety and environmental requirements;
- requirements for liquid preservation systems;
- clause on DC currents;
- vacuum, pressure and leak tests on tanks;
- facilities for condition monitoring and environmental and safety considerations.