NDLI: Low viscosity insulating liquid based on natural esters for distribution transformers

Content Provider	IEEE Xplore Digital Library
Author	Bertrand, Y. Lauzevis, P.
Copyright Year	2013
Description	Author affiliation: Electr. Equip. Lab., EDF R&D, Moret sur Loing, France (Bertrand, Y.) \|\| Network Tech. Direction, ERDF, Paris-La Défense, France (Lauzevis, P.)
Abstract	Environmental issues demand alternatives for the current mineral oils used in many electrical equipment, such as transformers. Because of their excellent biodegradability and non-toxicity, relative to petroleum derived products, the use of the vegetable oils is on the rise as insulating and heat transfer liquid in electrical devices. In addition such natural esters have a favourable lower flammability, but their viscosity and low temperature behaviour is not well suited to applications in cold climate and/or with natural cooling system. That is why a new insulating composition, based on modified vegetable oil, has been developed to present very similar properties to those of the standard insulating mineral oils and to meet the specific needs of LV/MV distribution transformers. This article presents in brief the chemistry of esters and the work completed on the formulation of a low-viscosity fluid based on these. Then it reports the results of the tests carried out to assess its performance in laboratory and real conditions.
Sponsorship	IEEE Dielectr. Electr. Insul. Soc.
Starting Page	374
Ending Page	377
File Size	248381
Page Count	4
File Format	PDF
ISBN	9781467347389
e-ISBN	9781467347440
e-ISBN	9781467347396
DOI	10.1109/EIC.2013.6554270
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-02
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power transformer insulation Oil insulation Minerals Vegetable oils Viscosity Circuit faults MV/L transformesr natural esters insulating liquid low viscosity
Content Type	Text
Resource Type	Article

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Development of a low viscosity insulating fluid based on vegetable oil

Alternative electrical insulating fluids in power transformers

Experimental study on vegetable oils properties for power transformer

Influence of nonmetallic particles on the breakdown strength of vegetable insulating oil

Performance analysis of natural esters as transformer liquid insulation — Coconut, castor and sesame oils

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Dissolved gas analysis differences between natural esters and mineral oils used in power transformers: a review

Reducing Environmental Impact and Improving Safety and Performance of Power Transformers With Natural Ester Dielectric Insulating Fluids

Low viscosity insulating liquid based on natural esters for distribution transformers

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