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  • ASTM
    D7150-13 Standard Test Method for the Determination of Gassing Characteristics of Insulating Liquids Under Thermal Stress
    Edition: 2013
    $103.58
    Unlimited Users per year

Description of ASTM-D7150 2013

ASTM D7150-13

Historical Standard: Standard Test Method for the Determination of Gassing Characteristics of Insulating Liquids Under Thermal Stress




ASTM D7150

Scope

1.1 This test method describes the procedures to determine the gassing characteristics due to thermal stress at 120°C of insulating liquids specifically and without the influence of other electrical apparatus materials or electrical stresses. This test method was primarily designed for insulating mineral oil. It can be applied to other insulating liquids in which dissolved gas-in-oil analysis (Test Method D3612) is commonly performed.

1.2 This test method is particularly suited for detection of the phenomenon sometimes known as “stray gassing” and is also referred to in CIGRE TF11 B39.

1.3 This test method is performed on transformer insulating liquids to determine the propensity of the oil to produce certain gases such as hydrogen and hydrocarbons at low temperatures.

1.4 This test method details two procedures:

1.5 Method A describes the procedure for determining the gassing characteristics of insulating liquids, at 120°C for 164 h.

1.6 Method B describes the procedure for processing the insulating liquid through an attapulgite clay column to remove organic contaminants and other reactive groups that may influence the gassing behavior of an insulating liquid, which is suspected of being contaminated. This procedure applies to both new and used insulating liquids.

1.7 The values stated in SI units are to be regarded as standard. English units are used when there is no metric equivalent.

1.8 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.


Keywords

combustible gases; DGA; dissolved gases; dissolved gas-in-oil; insulating oil; low temperature gassing characteristics; stray gassing; transformer oil, clay treatment


ICS Code

ICS Number Code 29.040.01 (Insulating fluids in general)


DOI: 10.1520/D7150-13

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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