ASTM D901-91(1997)
Standard Test Methods for Askarels

Standard No.

ASTM D901-91(1997)

Release Date

1997

Published By

American Society for Testing and Materials (ASTM)

Status

Withdraw 2004-01

Latest

ASTM D901-91(1997)

Scope

1.1 These test methods cover procedures for testing askarels that are used in transformers and certain other electrical apparatus as an insulating and cooling medium. These methods are generally suitable for specification acceptance, factory control, reference testing, and research. The procedures appear in the following sections: Test Method ASTM Designation of Test Method Chemical Tests: Neutralization Number D 664, D974 Water Content D 1533 Scavenger Content D 1701 Chlorine Compounds, Hydrolyzable D 1820, D2441 Chlorides, Inorganic D 1821 Thermal Stability D 1936 Electrical Tests: Dielectric Breakdown Voltage D 877 Dissipation Factor and Relative Permittivity D 924 Specific Resistance D 1169 Physical Tests: Viscosity D 88, D455 Fire Point D 92 Pour Point D 97 Sampling D 923 Refractive Index D 1218 Visual Examination D 1702 Specific Gravity D 1810 Coefficient of Thermal Expansion D 1903 Color D 2129 Polychlorinated Biphenyls in Environmental Materials D 3304 Polychlorinated Biphenyls in Mineral Insulating Oils by Gas Chromatography D 4059 For askarels having a Saybolt Universal viscosity of over 110 s at 100°F, modifications of certain test procedures are necessary. 1.2 As a precaution, insulating systems incorporating askarels and cellulose or other organic materials should be purged to remove any traces of flammable gases by bubbling dry nitrogen through the askarel and flushing the gas space with dry nitrogen before any work is performed on the apparatus. 1.3 Current governmental regulations prohibit the manufacture and sale of polychlorinated biphenyls (PCBs). This method serves as a reference for all askarels, PCB and non-PCB. NOTE 1—Various materials have been used successfully in taking, storing, and testing samples of askarels. Until experience has developed a strong preference, materials referred to in these methods will be understood to be approved but not specified. NOTE 2—Methods for handling and disposal of askarels and askarelimpregnated materials are given in a recent ANSI Committee C-107 Guide, Guidelines for Handling and Disposal of Capacitor and Transformer-Grade Askarels Containing Polychlorinated Biphenyls.2 NOTE 3—For specifications for askarels, see Specifications D 2233 and D 2283. 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 determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 1.2.

ASTM D901-91(1997) Referenced Document

• ASTM D1169 Standard Test Method for Specific Resistance (Resistivity) of Electrical Insulating Liquids
• ASTM D1218 Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids*， 1999-04-22 Update
• ASTM D1533 Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration*， 2024-04-22 Update
• ASTM D1701 Standard Test Methods for Scavenger Content of Askarels
• ASTM D1810 Standard Test Method for Specific Gravity of Askarels
• ASTM D1820 Standard Test Method for Hydrolyzable Chlorine Compounds in Chlorinated Aromatic Hydrocarbons (Askarels)
• ASTM D1821 Standard Test Method for Inorganic Chlorides in Askarels
• ASTM D1903 Standard Test Method for Coefficient of Thermal Expansion of Electrical Insulating Liquids of Petroleum Origin, and Askarels
• ASTM D2129 Standard Test Method for Color of Clear Electrical Insulating Liquids (Platinum-Cobalt Scale)*， 1997-04-22 Update
• ASTM D2233 Standard Specification for Chlorinated Aromatic Hydrocarbons (Askarels) for Capacitors
• ASTM D2283 Standard Specification for Chlorinated Aromatic Hydrocarbons (Askarels) for Transformers
• ASTM D2441 Standard Test Method for Hydrolyzable Chlorine Compounds in Chlorinated Aromatic Hydrocarbons (Askarels) by Refluxing
• ASTM D2864 Standard Terminology Relating to Electrical Insulating Liquids and Gases*， 2021-11-01 Update
• ASTM D4059 Standard Test Method for Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography*， 2018-12-01 Update
• ASTM D445 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)*， 1997-04-22 Update
• ASTM D664 Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration
• ASTM D877 Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
• ASTM D88 Standard Test Method for Saybolt Viscosity
• ASTM D92 Standard Test Method for Flash and Fire Points by Cleveland Open Cup*， 1998-04-22 Update
• ASTM D923 Standard Practices for Sampling Electrical Insulating Liquids *， 1997-04-22 Update
• ASTM D924 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids*， 1999-04-22 Update
• ASTM D97 Standard Test Method for Pour Point of Petroleum Products
• ASTM D974 Standard Test Method for Acid and Base Number by Color-Indicator Titration*， 1997-04-22 Update

ASTM D901-91(1997) history

• 1997 ASTM D901-91(1997) Standard Test Methods for Askarels