Effect of hydrocarbon composition of transformer oil on dielectric losses
| Autor: | R. A. Lipshtein, E. N. Shtern |
|---|---|
| Rok vydání: | 1967 |
| Předmět: |
chemistry.chemical_classification
Bicyclic molecule Transformer oil General Chemical Engineering Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element General Chemistry Dielectric Oxygen law.invention Dilution Fuel Technology Hydrocarbon chemistry law Organic chemistry Dielectric loss Distillation |
| Zdroj: | Chemistry and Technology of Fuels and Oils. 3:363-366 |
| ISSN: | 1573-8310 0009-3092 |
| DOI: | 10.1007/bf00726421 |
| Popis: | 1. It has been shown experimentally that the hydrocarbons making up petroleum-derived transformer oils (isoparaffinic, naphthenic, naphthenic-aromatic, and aromatic hydrocarbons) are characterized by very low values of tan δ (within the experimental error) at 50 Hz and temperatures from 20 to 125° C. 2. In the process of determining tan δ during prolonged heating to high temperatures (100–125°C), aromatic hydrocarbons from resins, causing an increase in tan δ. This explains the lack of agreement with the data of [1, 3, 4]. 3. When the additive 2, 6-di-tert-butyl-4-methylphenol (ionol) is used in a fraction of monocyclic aromatic hydrocarbons isolated from a transformer oil distillate, it retards the processes of resin formation and the increase in tan δ. A fraction of bicyclic aromatic hydrocarbons has little response to the action of ionol. 4. When aromatic hydrocarbons are diluted with substantial amounts of naphthenes, the tendency of the aromatics toward resin formation during aging under conditions of oxygen “starvation” is decreased sharply, out of proportion to the amount of dilution. This phenomenon can serve as the basis for producing oils that will change little in dielectric properties during service. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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