BS EN 62770:2014 PDF

What is BS EN 62770 – Unused natural esters about ?

BS EN 62770 is an international standard on fluids for electrotechnical applications that describes specifications and test methods for unused natural esters in transformers and similar oil-impregnated electrical equipment in which a liquid is required as an insulating and heat transfer medium. In BS EN 62770 , the term “natural esters” applies to insulating fluids for transformers and similar electrical equipment with suitable biodegradability and environmental compatibility. Such natural esters are vegetable oils obtained from seeds and oils obtained from other suitable biological materials and delivered to an agreed point, at a set period. These oils are comprised of triglycerides.