Mineral insulating oil in transformers

Rouse, T.O.

doi:10.1109/57.675572

Cited by 329 publications

(121 citation statements)

References 6 publications

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“…Polychlorinated biphenyls (PCBs) (Fig.6) were widely used as insulating fl uids in capacitors and transformers until about 40 years ago (36). Their manufacture and commercial use have been prohibited in many countries since the 1970s (in 1972 in Japan) because of their strong toxicity, environmental persistence, and bioaccumulation.…”

Section: Function Of Cyclodextrin Assemblies: Removal Of Polychlormentioning

confidence: 99%

Formation and Function of Nano- and Microstructures by the Self-assembly of Cyclic Oligosaccharides ‘Cyclodextrins’

Kida

2011

TIGG

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Recently, much attention has been paid to studies on nano-and microstructures formed by the self-assembly of cyclodextrins (CDs) in the fields of supramolecular chemistry and material science. CDs can adopt various types of assembly modes in aqueous solution, as well as crystal structures. Channel-type assemblies of γ-CD (γ-CD channel ) formed unique micrometer-sized cubes and rods. By using γ-CD channel as a host, the inclusion of guest molecules dissolved in oils, which has been believed to be impossible, can be realized. Furthermore, γ-CD channel showed excellent oil dispersion, and formed organogels in a variety of oils and organic solvents at ambient temperature. This article reviews the formation behavior and function of nano-and microstructures formed by the self-assembly of CDs. A. IntroductionCyclodextrins (CDs), which are produced from starch by the action of cyclodextrin glucanotransferase, are a class of cyclic oligosaccharides consisting of several α-(1,4)-linked D-glucopyranose units (Fig. 1). CDs composed of 6, 7, and 8 glucosidic units are called α-, β-, and γ-CDs, respectively, and have been used extensively. They have a cavity of sub-

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Section: Function Of Cyclodextrin Assemblies: Removal Of Polychlormentioning

confidence: 99%

Formation and Function of Nano- and Microstructures by the Self-assembly of Cyclic Oligosaccharides ‘Cyclodextrins’

Kida

2011

TIGG

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“…The difference of chemical structure caused the vegetable oil possess higher solubility compared to the mineral oil at the same temperature. Mineral oil consists of hydrocarbon which is divided into alkanes, naphthenes and aromatics [48] as shown in Fig. 13(a).…”

Section: Fig 11 Breakdown Mechanism In Liquid Dielectricmentioning

confidence: 99%

Study of Dielectric Properties of a Potential RBD Palm Oil and RBD Soybean Oil Mixture as Insulating Liquid in Transformer

Azmi¹,

Ahmad²,

Jamil³

2015

Journal of Electrical Engineering and Technology

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-This paper reported the experimental result of dielectric properties of Refined, Bleached and Deodorized Palm Oil (RBDPO) combined with 0-50% of Refined, Bleached and Deodorized Soybean Oil (RBDSO). The dielectric strength and relative permittivity of RBDPO/RBDSO was higher compared to mineral oil at all ranges of ratios and temperatures which indicated a positive sign for its possible use as insulating liquid in a transformer. All ratios of the RBDPO/RBDSO mixture also demonstrated lower dissipation factor compared to mineral oil at 40˚C, 70˚C and 90˚C. Apart from that, the kinematic viscosity for the oil mixtures shown exceeded the IEC 60296 as well as the mineral oil results. 70%RBDPO/30%RBDSO mixture ratio was chosen as the best mixing percentage after comparison was made with the mineral oil and IEC 60296 standard where the mixture accumulated the most satisfactory of dielectric properties hence making it as the potential candidate for palm and soybean-based transformer oil.

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“…Mineral oil is one of the most commonly used insulating liquid [1]. It is used in many electrical equipment, such as power transformers.…”

Section: Introductionmentioning

confidence: 99%

Comparison of mineral oil and esters as cooling liquids in high voltage transformer in aspect of environment protection

2017

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Mineral insulating oil in transformers

Cited by 329 publications

References 6 publications

Formation and Function of Nano- and Microstructures by the Self-assembly of Cyclic Oligosaccharides ‘Cyclodextrins’

Formation and Function of Nano- and Microstructures by the Self-assembly of Cyclic Oligosaccharides ‘Cyclodextrins’

Study of Dielectric Properties of a Potential RBD Palm Oil and RBD Soybean Oil Mixture as Insulating Liquid in Transformer

Comparison of mineral oil and esters as cooling liquids in high voltage transformer in aspect of environment protection

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