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Test Method for Determination of the Relative Content Of Dissolved Decay Products in Mineral Insulating Oils by Spectrophotometry (Withdrawn 2019)
Automaticky preložený názov:
Skúšobná metóda na stanovenie relatívnej obsah rozpustených produktov rozpadu v minerálnych izolačných olejov spektrofotometricky
NORMA vydaná dňa 15.6.2010
Označenie normy: ASTM D6802-02(2010)
Poznámka: NEPLATNÁ
Dátum vydania normy: 15.6.2010
Kód tovaru: NS-36593
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
chemical stability, dissolved decay products, insulating oil, oxidation decay, visible spectrum, Chemical stabilization testing, Dissolved decay products, Mineral insulating oil, Oxidation induced defects, Oxidation testing, Spectrophotometry, Visible spectrum, ICS Number Code 71.040.50 (Physicochemical methods of analysis)
Significance and Use | ||||||
The content of dissolved decay products in insulating oils is made up of a variety of compounds, such as peroxides, aldehydes, ketones, and organic acids. Each of them is partially adsorbed on the large surface of paper insulation leading to the premature aging of power transformers. The relative assessment of byproduct formation, therefore, can be used as an indicator of the aging of the mineral oil. |
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1. Scope | ||||||
1.1 This test method characterizes by spectrophotometry the relative level of dissolved decay products in mineral insulating oils of petroleum origin. While new oil is almost transparent to a monochromatic beam of light in the visible spectrum, the increasing concentration of dissolved decay products shift the absorbance curve to longer wavelengths. 1.2 This test method is applicable to compare the extent of dissolved decay products for oils in service. It can assess the effectiveness of used or stored oil purification during the reclamation process, as well. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||
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