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Natural Ester Dielectric Fluid Development
2005/2006 PES TD, 2006Since the early 1980s, Cooper Power Systems has been actively involved in exploring and developing ester-based dielectric fluids. Introduced in 1984, our first commercialized ester was a synthetic polyol ester, developed primarily as an environmentally acceptable Askarel substitute.
C.P. McShane +3 more
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Natural ester and synthetic ester fluids, applications and maintenance
2017 10th Jordanian International Electrical and Electronics Engineering Conference (JIEEEC), 2017These days the use of ester-based transformer fluids as an alternative to mineral oil is on the increase. The environmental and fire benefits of these fluids are being realised by more and more users, which has led to esters being used in a wide range of transformers, even up to the 400kV transmission level.
M. Lashbrook, H. Al-Amin, R. Martin
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Bioactive natural derivatives of phthalate ester
Critical Reviews in Biotechnology, 2020The advantages and emergent interest in organism-derived bioactive molecules have recently renewed scientific research attention in this field. Since 1967, about 52 different derivatives of phthalate ester (PE) have been reported from different taxonomic groups.
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Dielectric properties of natural esters
2011 10th International Conference on Environment and Electrical Engineering, 2011Electroinsulating materials are important and expensive parts of every electrotechnical equipment. One of the most common used electroinsulating materials are electroinsulating oils. In electrotechnical practice, the greatest utilization for mineral oils is due to their great electroinsulating features, simple accessibility and their low price ...
M. Marci, I. Kolcunova, J. Kurimsky
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Synthetic Studies on Natural Diterpenoid Glyceryl Esters
Tetrahedron, 2000Synthesis of natural bicyclic and tricyclic diterpenoid diacylglycerols has been performed by regioselective coupling of terpenoid acid with glycerol at 1'-sn position. This method may be considered a general approach to obtain optically active acylglycerols. The preparation of C-13-labelled geranylgeranoic acid glyceryl esters is also described here. (
Ungur N. +3 more
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Natural Esters and Mineral Oils Fire Behavior
2018 IEEE 2nd International Conference on Dielectrics (ICD), 2018In recent times, the use of natural esters (vegetable fluids) in power transformers is having a considerable increase due to their advantages in terms of high flash/fire points, lower toxicity, higher biodegradability and possibility of recycling.
Pompili Massimo +5 more
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Validation of condition of natural esters
2016 Diagnostic of Electrical Machines and Insulating Systems in Electrical Engineering (DEMISEE), 2016Demands on current electrical insulating systems have increasing trend toward tolerance to environmental safe conditions. This trend of course subsequently requires finding a new way in the field of application of materials compatible with the surrounding environment, e.g. easy biodegradable.
Anna Cejkova +2 more
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Natural ester — Moisture and acidity issue
2016 Conference on Diagnostics in Electrical Engineering (Diagnostika), 2016Electrical insulating system is an important part of the electrical equipment. In the case of high voltage transformers, their electrical insulating system is composed of insulating oil and paper, the quality of used insulating fluid is a decisive factor for the service life and reliability of the transformer.
Anna Cejkova +2 more
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Electrical characteristics of natural ester based nanofluid
2017 International Electrical Engineering Congress (iEECON), 2017In this paper, the dielectric properties of natural ester based nanofluids were investigated. This research represents the improvement of the electrical properties, AC breakdown and negative lightning impulse breakdown strength, of the natural ester (FR3) by amalgamation with nanoparticles. Two types of nanoparticles i.e., Titanium dioxide (TiO 2 ) and
S. Potivejkul +3 more
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Practical Experience of Natural Esters Quality Maintenance
2020 IEEE Electrical Insulation Conference (EIC), 2020Nowadays, the environmental requirements in the electrical industry have increased. Natural Esters are one of the alternatives to replace mineral oils in power and distribution transformers due to their high biodegradability and environmental clearness in general.
Oxana Mazur, Frank May, Jose Mora
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