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IEC 62770-ed.1.0
Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment
STANDARD published on 19.11.2013
The information about the standard:
Designation standards: IEC 62770-ed.1.0
Publication date standards: 19.11.2013
SKU: NS-414897
The number of pages: 34
Approximate weight : 102 g (0.22 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 62770-ed.1.0 :
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. La CEI 62770:2013 decrit les specifications et methodes dessai applicables aux esters naturels neufs dans les transformateurs et materiels electriques impregnes dhuile analogues necessitant un liquide en tant que milieu isolant et caloporteur. Les esters naturels avec additifs entrent dans le domaine dapplication de la presente norme. En raison de leur composition chimique differente, les esters naturels se distinguent des huiles minerales isolantes et dautres fluides isolants qui possedent des points de feu eleves, tels que les esters synthetiques ou les fluides silicones. Les fluides isolants derives desters naturels presentant une faible viscosite ont ete introduits, mais ne sont pas couverts par la presente norme. Les proprietes pertinentes de ces fluides sont indiquees dans lAnnexe B. La presente norme nest applicable quaux esters naturels neufs. Les esters naturels regeneres et les esters naturels melanges a des fluides a base desters non naturels nentrent pas dans le domaine dapplication de cette norme.
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