IEC 62770:2013 

Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment

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Abstract

IEC 62770:2013 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. Natural esters with additives are within the scope of this standard. Because of their different chemical composition, natural esters differ from insulating mineral oils and other insulating fluids that have high fire points, such as synthetic esters or silicone fluids. Natural, ester-derived insulating fluids with low viscosity have been introduced but are not covered by this standard. Pertinent properties of such fluids are given in Annex B. This standard is applicable only to unused natural esters. Reclaimed natural esters and natural esters blended with non-natural esters fluids are beyond the scope of this standard.

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Additional information

Publication typeInternational Standard
Publication date2013-11-19
Edition1.0
Available language(s)English/French, Spanish
TC/SCTC 10 - Fluids for electrotechnical applicationsrss
ICS29.040.01 - Insulating fluids in general
Stability date  2019
Pages34
File size1092 KB

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