UNE-EN 50629:2016

This European Standard applies to new three-phase and single-phase power transformers with Um > 36 kV. The scope of this European Standard is the following:" Defining the appropriate energy efficiency criteria;" Setting of benchmark minimum efficiency levels for new transformers based on an assessment of the energy efficiency of the European transformer population installed in the last 10 years;" Proposing higher minimum efficiency levels for improving the energy efficiency of new transformers;" Providing guidance for consideration of Total Cost of Ownership.This European Standard provides also a form for efficiency data collection to inform future efficiency benchmark levels.Transformers considered to be out of the scope of this document are the following:" Instrument transformers;" Earthing transformers;" Traction transformers on rolling stock;" Starting transformers;" Testing transformers;" Welding transformers;" Explosion-proof and underground mining transformers;" Transformers for deep water (submerged) applications.