Active standard | Published: 08/10/2024

IEC 62770-ed.2.0

Fluids for electrotechnical applications - Unused natural esters for transformers and similar electrical equipment
(Fluides pour applications electrotechniques - Esters naturels neufs pour transformateurs et materiels electriques analogues)

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Detail information

Designation: IEC 62770-ed.2.0

Publication date: 08/10/2024

Pages: 33

Country: International technical standard

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Anotation

IEC 62770:2024 describes specifications and test methods for unused natural esters in transformers and similar liquid-immersed electrical equipment in which a liquid is required as an insulating and heat transfer medium. The exposure of natural ester to air leads to deterioration of the insulating liquid. Use of natural esters is therefore restricted to sealed units, or with the conservator tank protected from the contact with atmosphere by a membrane or other suitable system. IEC 62770:2024 decrit les specifications et methodes dessai applicables aux esters naturels neufs dans les transformateurs et materiels electriques immerges dans du liquide analogues qui necessitent un liquide en tant que milieu isolant et caloporteur. Lexposition de lester naturel a lair entraine une deterioration du liquide isolant. Lutilisation des esters naturels est donc limitee a des unites scellees, ou avec le conservateur protege du contact atmospherique par une membrane ou tout autre systeme approprie.

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