ASTM D3487-16e1
(Specification)Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
ABSTRACT
This specification covers two types of new mineral insulating oils of petroleum origin for use as an insulating and cooling medium in new and existing power and distribution electrical apparatuses, such as transformers, regulators, reactors, circuit breakers, switchgear, and attendant equipment. It is the intension of this specification to define a mineral insulating oil that is functionally interchangeable and miscible with existing oils, is compatible with existing apparatus and with appropriate field maintenance, and will satisfactorily maintain its functional characteristics in its application in electrical equipment. Type I mineral oils are used for apparatuses where normal oxidation resistance is required, where as, Type II mineral oils are used for apparatuses where greater oxidation resistance is required. When examined with corresponding test methods, sampled specimens shall conform accordingly to physical (aniline point, color, flash point, interfacial tension, pour point, relative density or specific gravity, viscosity, and appearance), electrical (dielectric breakdown voltage, gassing tendency, and dissipation or power factor), and chemical (oxidation stability, oxidation inhibitor content, corrosive sulfur content, water content, neutralization number, and PCB content) property requirements.
SCOPE
1.1 This specification covers unused mineral insulating oil of petroleum origin for use as an insulating and cooling medium in new and existing power and distribution electrical apparatus, such as transformers, regulators, reactors, circuit breakers, switchgear, and attendant equipment.
1.2 This specification is intended to define a mineral insulating oil that is functionally interchangeable and miscible with existing oils, is compatible with existing apparatus and with appropriate field maintenance,2 and will satisfactorily maintain its functional characteristics in its application in electrical equipment. This specification applies only to new insulating oil as received prior to any processing.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
General Information
Relations
Standards Content (Sample)
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.
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Designation:D3487 −16
Standard Specification for
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Mineral Insulating Oil Used in Electrical Apparatus
This standard is issued under the fixed designation D3487; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
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ε NOTE—In X1.1, for Thermal conductivity, W/ was added before (m·°C) editorially in December 2017.
1. Scope D92Test Method for Flash and Fire Points by Cleveland
Open Cup Tester
1.1 This specification covers unused mineral insulating oil
D97Test Method for Pour Point of Petroleum Products
of petroleum origin for use as an insulating and cooling
D117Guide for Sampling, Test Methods, and Specifications
medium in new and existing power and distribution electrical
for Electrical Insulating Oils of Petroleum Origin
apparatus, such as transformers, regulators, reactors, circuit
D445Test Method for Kinematic Viscosity of Transparent
breakers, switchgear, and attendant equipment.
and Opaque Liquids (and Calculation of DynamicViscos-
1.2 This specification is intended to define a mineral insu-
ity)
latingoilthatisfunctionallyinterchangeableandmisciblewith
D611Test Methods for Aniline Point and Mixed Aniline
existing oils, is compatible with existing apparatus and with
Point of Petroleum Products and Hydrocarbon Solvents
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appropriatefieldmaintenance, andwillsatisfactorilymaintain
D923Practices for Sampling Electrical Insulating Liquids
its functional characteristics in its application in electrical
D924Test Method for Dissipation Factor (or Power Factor)
equipment.Thisspecificationappliesonlytonewinsulatingoil
and Relative Permittivity (Dielectric Constant) of Electri-
as received prior to any processing.
cal Insulating Liquids
1.3 The values stated in SI units are to be regarded as
D971Test Method for Interfacial Tension of Oil Against
standard. No other units of measurement are included in this
Water by the Ring Method
standard.
D974Test Method for Acid and Base Number by Color-
1.4 This international standard was developed in accor-
Indicator Titration
dance with internationally recognized principles on standard-
D1275Test Method for Corrosive Sulfur in Electrical Insu-
ization established in the Decision on Principles for the
lating Liquids
Development of International Standards, Guides and Recom-
D1298Test Method for Density, Relative Density, or API
mendations issued by the World Trade Organization Technical
Gravity of Crude Petroleum and Liquid Petroleum Prod-
Barriers to Trade (TBT) Committee.
ucts by Hydrometer Method
D1500Test Method forASTM Color of Petroleum Products
2. Referenced Documents
(ASTM Color Scale)
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2.1 ASTM Standards: D1524Test Method for Visual Examination of Used Elec-
trical Insulating Liquids in the Field
D1533Test Method for Water in Insulating Liquids by
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This specification is under the jurisdiction of ASTM Committee D27 on Coulometric Karl Fischer Titration
Electrical Insulating Liquids and Gasesand is the direct responsibility of Subcom-
D1816Test Method for Dielectric Breakdown Voltage of
mittee D27.01 on Mineral.
Insulating Liquids Using VDE Electrodes
Current edition approved June 15, 2016. Published July 2016. Originally
D1903Practice for Determining the Coefficient of Thermal
approved in 1976. Last previous edition approved in 2009 as D3487–09.
DOI:10.1520/D3487-16E01.
Expansion of Electrical Insulating Liquids of Petroleum
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Refer to the Institute of Electrical and Electronic Engineers, Inc. (IEEE)
Origin, and Askarels
C57.106, Guide for Acceptance and Maintenance of Insulating Oil in Equipment.
D2112Test Method for Oxidation Stability of Inhibited
Available from IEEE Operations Center, 445 Hoes Lane, Piscataway, NJ 08854-
4141, USA.
Mineral Insulating Oil by Pressure Vessel
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
D2300Test Method for Gassing of Electrical Insulating
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Liquids Under Electrical Stress and Ionization (Modified
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Pirelli Method)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D3487−16
D2440Test Method for Oxidation Stability of Mineral
Minimum Pressure
Temperature, °C Pa Torr, Approximate
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