ASTM D5222-23

Standard Specification for Less Flammable High Molecular Weight Hydrocarbon Mineral Electrical Insulating Liquids

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STANDARD published on 1.1.2023

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The information about the standard:

Designation standards: ASTM D5222-23
Publication date standards: 1.1.2023
SKU: NS-1103620
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Insulating oils

Annotation of standard text ASTM D5222-23 :

This specification describes a high fire-point mineral oil based electrical insulating fluid, for use as a dielectric and cooling medium in new and existing power and distribution electrical apparatuses, such as transformers and switchgear. The material discussed here is miscible with other petroleum based insulating oils, and may not be miscible with electrical insulating liquids of non-petroleum origin. The insulating oils shall be compatible with typical material of construction of existing apparatus and will satisfactorily maintain its functional characteristic in its application. This specification applies only to new insulating material oil as received prior to any processing. Sampled specimens shall undergo appropriate tests, and shall conform correspondingly to specified physical (appearance upon visual examination, color in ASTM units, fire point, flash point, aniline point, interfacial tension, pour point, relative density, and kinematic viscosity), electrical (dielectric breakdown voltage, gassing tendency, and dissipation factor), and chemical (corrosion behavior against sulfur, inorganic chlorides and sulfates content, acid number, water content, oxidation stability, oxidation inhibitor content, and PCB content) property requirements.

Keywords:

electrical insulating liquid, fire point, flammability, insulating liquid, mineral insulating liquid,, ICS Number Code 29.040.10 (Insulating oils)

Additional information

1. Scope

1.1?This specification describes a less flammable mineral electrical insulating liquid, for use as a dielectric and cooling medium in new and existing power and distribution electrical apparatus, such as transformers and switchgear.

1.2?Less flammable insulating liquid differs from conventional mineral insulating liquid by possessing a fire-point of at least 300 ?C. This property is necessary in order to comply with certain application requirements of the National Electrical Code (Article 450-23) or other agencies. The material discussed in this specification is miscible with other petroleum based insulating liquids. Mixing less flammable liquids with lower fire point hydrocarbon insulating liquids (for example, Specification D3487 mineral liquid) may result in fire points of less than 300 ?C.

1.3?This specification is intended to define a less flammable electrical mineral insulating liquid that is compatible with typical material of construction of existing apparatus and will satisfactorily maintain its functional characteristic in this application. The material described in this specification may not be miscible with electrical insulating liquids of non-petroleum origin. The user should contact the manufacturer of the less flammable insulating liquid for guidance in this respect.

1.4?This specification applies only to new electrical insulating liquid as received prior to any processing. Information on in-service maintenance testing is available in appropriate guides.2 The user should contact the manufacturers of the equipment or liquid if questions of recommended characteristics or maintenance procedures arise.

1.5?The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

D5949-16(2022)	Standard Test Method for Pour Point of Petroleum Products (Automatic Pressure Pulsing Method)
D5950-14(2020)	Standard Test Method for Pour Point of Petroleum Products (Automatic Tilt Method)
National Electrical Code,	Article 450-23 Available from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
D1816-12(2019)	Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE Electrodes
D2112-15(2023)	Standard Test Method for Oxidation Stability of Inhibited Mineral Insulating Oil by Pressure Vessel
D2300-08(2017)	Standard Test Method for Gassing of Electrical Insulating Liquids Under Electrical Stress and Ionization (Modified Pirelli Method)
D2440-13(2021)	Standard Test Method for Oxidation Stability of Mineral Insulating Oil
D97-17b(2022)	Standard Test Method for Pour Point of Petroleum Products (Includes all amendments and changes 11/29/2022).
D445-23	Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D664-18e2	Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration (Includes all amendments and changes 1/4/2019).
D924-23	Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
D971-20	Standard Test Method for Interfacial Tension of Insulating Liquids Against Water by the Ring Method
D1275-24	Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids
D1298-12b(2017)e1	Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method (Includes all amendments and changes 3/14/2023).
D92-18	Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester
C57.121	Guide for Acceptance and Maintenance of Less-Flammable Hydrocarbon Fluid in Transformers Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE), 445 Hoes Ln., Piscataway, NJ 08854-4141, http://www.ieee.org.
D923-15(2023)	Standard Practices for Sampling Electrical Insulating Liquids
D117-22	Standard Guide for Sampling, Test Methods, and Specifications for Electrical Insulating Liquids
D974-22	Standard Test Method for Acid and Base Number by Color-Indicator Titration
D1500-12(2017)	Standard Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)
D1524-15(2022)	Standard Test Method for Visual Examination of Used Electrical Insulating Liquids in the Field
D1533-20	Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration
D878-01e1	Standard Test Method for Inorganic Chlorides and Sulfates in Insulating Oils
D2668-07(2021)	Standard Test Method for 2,6-di-tert-Butyl- p-Cresol and 2,6-di-tert-Butyl Phenol in Electrical Insulating Oil by Infrared Absorption
D2864-21a	Standard Terminology Relating to Electrical Insulating Liquids and Gases (Includes all amendments and changes 12/14/2021).
D3487-16e1	Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus (Includes all amendments and changes 1/1/2018).
D4052-22	Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4059-00(2018)	Standard Test Method for Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography
D4768-11(2019)	Standard Test Method for Analysis of 2,6-Ditertiary-Butyl Para-Cresol and 2,6-Ditertiary-Butyl Phenol in Insulating Liquids by Gas Chromatography

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