ASTM D924-99e2

    Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids


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    1. Scope

    1.1 This test method covers new electrical insulating liquids as well as liquids in service or subsequent to service in cables, transformers, oil circuit breakers, and other electrical apparatus.

    1.2 This test method provides a procedure for making referee tests at a commercial frequency of between 45 and 65 Hz.

    1.3 Where it is desired to make routine determinations requiring less accuracy, certain modifications to this test method are permitted as described in Sections 19 to 27.

    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. Specific warnings are given in 14.4.2.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation

    D923 Practices for Sampling Electrical Insulating Liquids

    D2864 Terminology Relating to Electrical Insulating Liquids and Gases

    D2865 Practice for Calibration of Standards and Equipment for Electrical Insulating Materials Testing

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    IEEE Standard

    Standard 4


    ICS Code

    ICS Number Code 29.040.10 (Insulating oils)

    UNSPSC Code

    UNSPSC Code 15121505(Transformer oil or insulating oil)


    Referencing This Standard
    Link Here
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    DOI: 10.1520/D0924-99E02

    Citation Format

    ASTM D924-99e2, Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids, ASTM International, West Conshohocken, PA, 1999, www.astm.org

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