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ASTM D3612-02(2009)

Заменен
Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography — 22 стр.
Значение и использование

Oil and oil-immersed electrical insulation materials may decompose under the influence of thermal and electrical stresses, and in doing so, generate gaseous decomposition products of varying composition which dissolve in the oil. The nature and amount of the individual component gases that may be recovered and analyzed may be indicative of the type and degree of the abnormality responsible for the gas generation. The rate of gas generation and changes in concentration of specific gases over time are also used to evaluate the condition of the electric apparatus.

Note 1—Guidelines for the interpretation of gas-in-oil data are given in IEEE C57.104.

Область применения

1.1 This test method covers three procedures for extraction and measurement of gases dissolved in electrical insulating oil having a viscosity of 20 cSt (100 SUS) or less at 40°C (104°F), and the identification and determination of the individual component gases extracted. Other methods have been used to perform this analysis.

1.2 The individual component gases that may be identified and determined include:

HydrogenH2 OxygenO2 NitrogenN2 Carbon monoxideCO Carbon dioxideCO2 MethaneCH4 EthaneC2H6 EthyleneC2H4 AcetyleneC2H2 PropaneC3H8 PropyleneC3H6

1.3 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 determine the applicability of regulatory limitations prior to use. For specific warning statements see 6.1.8, 30.2.2 and 30.3.1.

ICS
29.040.10 Insulating oils / Изоляционные масла
Сборник ASTM
10.03 Electrical Insulating Liquids and Gases; Electrical Protective Equipment / Электроизоляционные (изолирующие) жидкости и газы; Электрозащитное оборудование
Тематика
Electrical Insulating Materials