Results 21 to 30 of about 17,532 (305)

Difference analysis of dissolved gas in natural ester insulating fluids under typical electrical and thermal faults: An experimental study

open access: yesHigh Voltage, 2023
Natural ester insulating oil is widely used in transformers due to its good fire resistance and biodegradability. It is mainly composed of triglycerides, and there are some differences in fatty acid composition and content among natural esters. Therefore,
Yadong Xing   +5 more
doaj   +1 more source

Impulse-driven surface breakdown data : a Weibull statistical analysis [PDF]

open access: yes, 2012
Surface breakdown of oil-immersed solids chosen to insulate high-voltage, pulsed-power systems is a problem that can lead to catastrophic failure. Statistical analysis of the breakdown voltages, or times, associated with such liquid-solid interfaces can ...
Given, M   +7 more
core   +1 more source

Flow behaviour of dielectric liquids in an electric field [PDF]

open access: yes, 2006
A family of 10 silicone oils with electrical conductivity similar to 10(-13) S m(-1) (a regime hitherto systematically unexplored) and viscosities ranging from 1 to 2000mPas have been Subjected to an electrical field of up to 1.5kV mm(-1) during flow ...
Edirisinghe, MJ   +2 more
core   +1 more source

Enrichment and Identification of Askarel oil (PCB blend) degrading bacteria enriched from landfill sites in Edo State, Nigeria. [PDF]

open access: yes, 2011
Microbial degradation following aerobic biodegradation is one of the means used by microorganisms for the removal of persistent organic pollutants from the soil. Bacterial species namely: Pseudomonas, Micrococcus Arthrobacter and Acinetobacter capable of
Nwinyi, Obinna
core   +1 more source

Determination of Moisture Content of Insulating Oils by CoCl2 [PDF]

open access: yesProblems of the Regional Energetics, 2021
Moisture content is one of the parameters of transformer oil that determine its quality. This parameter is one of the most critical, which is closely monitored.
Kozlov V.K.   +2 more
doaj   +1 more source

Removal of Dibenzyl Disulfide (DBDS) by Polyethylene Glycol Sodium and Its Effects on Mineral Insulating Oil

open access: yesIEEE Access, 2019
Dibenzyl disulfide (DBDS) is the major corrosive sulfur compound in mineral insulating oils, which will corrode the copper wires of windings in the oil-immersed power transformers and reactors and eventually cause operation failures.
Dong Ding   +6 more
doaj   +1 more source

On Some Imperative IEEE Standards for Usage of Natural Ester Liquids in Transformers

open access: yesIEEE Access, 2020
From the recent past, biodegradable dielectric fluids are becoming popular across the global utilities for use in oil-filled transformers. To date, several utilities have started using biodegradable insulating fluids for new and retro-filled power and ...
U. Mohan Rao   +2 more
doaj   +1 more source

A mixed-method analysis on students’ critical thinking and problem solving skill development in Malaysian public universities [PDF]

open access: yes, 2018
Employers nowadays are looking for potential fresh graduates who are able to think outside the box, so that they can produce with quality works. However, they are failed to do so and this situation result in high unemployment rate among graduates, mainly
Mohamed Saat, ‪Maisarah   +1 more
core   +1 more source

Streamer evolution arrest governed amplified AC breakdown strength of graphene and CNT colloids

open access: yes, 2018
The present article experimentally explores the concept of large improving the AC dielectric breakdown strength of insulating mineral oils by the addition of trace amounts of graphene or CNTs to form stable dispersions.
Chattopadhyay, Ankur   +3 more
core   +1 more source

CONTRIBUTIONS TO EVALUATION OF THE BIODEGRADABILITY BY ASPERGILLUS NIGER AND OTHER FUNGI’S OF SOME INSULATING OILS [PDF]

open access: yesJournal of Sustainable Energy, 2015
Mineral insulating oils used in electrical equipment because of their toxic organic substances and xenobiotic, represents a major risk to the environment - to accidental spills pollute soil, groundwater and surface water.
RADU E.   +4 more
doaj  

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