1、Designation: D 5222 08Standard Specification forHigh Fire-Point Mineral Electrical Insulating Oils1This standard is issued under the fixed designation D 5222; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification describes a high fire-point mineral oilbased insulating fluid, for use as a dielectric and coolingmedium in ne
3、w and existing power and distribution electricalapparatus, such as transformers and switchgear.1.2 High fire-point insulating oil differs from conventionalmineral insulating oil by possessing a fire-point of at least300C. High fire-point mineral insulating oils are also referredto as “less flammable
4、” mineral insulating oils.This property isnecessary in order to comply with certain application require-ments of the National Electrical Code (Article 450-23) or otheragencies. The material discussed in this specification is mis-cible with other petroleum based insulating oils. Mixing highfire-point
5、 liquids with lower fire point hydrocarbon insulatingoils (for example, Specification D 3487 mineral oil) may resultin fire points of less than 300C.1.3 This specification is intended to define a high fire-pointelectrical mineral insulating oil that is compatible with typicalmaterial of construction
6、 of existing apparatus and will satis-factorily maintain its functional characteristic in its applicationin this application. The material described in this specificationmay not be miscible with electrical insulating liquids ofnon-petroleum origin. The user should contact the manufac-turer of the hi
7、gh fire-point insulating oil for guidance in thisrespect.1.4 This specification applies only to new insulating mate-rial oil as received prior to any processing. Information onin-service maintenance testing is available in appropriateguides.2The user should contact the manufacturers of theequipment
8、or oil if questions of recommended characteristicsor maintenance procedures arise.2. Referenced Documents2.1 ASTM Standards:3D92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD97 Test Method for Pour Point of Petroleum ProductsD117 Guide for Sampling, Test Methods, and Specifica-t
9、ions for Electrical Insulating Oils of Petroleum OriginD 445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids (and Calculation of Dynamic Viscos-ity)D611 Test Methods for Aniline Point and Mixed AnilinePoint of Petroleum Products and Hydrocarbon SolventsD 664 Test Method forAcid
10、Number of Petroleum Productsby Potentiometric TitrationD 877 Test Method for Dielectric Breakdown Voltage ofInsulating Liquids Using Disk ElectrodesD 878 Test Method for Inorganic Chlorides and Sulfates inInsulating OilsD 923 Practices for Sampling Electrical Insulating LiquidsD 924 Test Method for
11、Dissipation Factor (or Power Factor)and Relative Permittivity (Dielectric Constant) of Electri-cal Insulating LiquidsD 971 Test Method for Interfacial Tension of Oil AgainstWater by the Ring MethodD 974 Test Method for Acid and Base Number by Color-Indicator TitrationD 1275 Test Method for Corrosive
12、 Sulfur in ElectricalInsulating OilsD 1298 Test Method for Density, Relative Density (SpecificGravity), or API Gravity of Crude Petroleum and LiquidPetroleum Products by Hydrometer MethodD 1500 Test Method for ASTM Color of Petroleum Prod-ucts (ASTM Color Scale)D 1524 Test Method for Visual Examinat
13、ion of Used Elec-trical Insulating Oils of Petroleum Origin in the FieldD 1533 Test Method for Water in Insulating Liquids byCoulometric Karl Fischer TitrationD 1816 Test Method for Dielectric Breakdown Voltage ofInsulating Oils of Petroleum Origin Using VDE ElectrodesD2112 Test Method for Oxidation
14、 Stability of InhibitedMineral Insulating Oil by Pressure VesselD 2300 Test Method for Gassing of Electrical InsulatingLiquids Under Electrical Stress and Ionization (ModifiedPirelli Method)D 2440 Test Method for Oxidation Stability of MineralInsulating Oil1This specification is under the jurisdicti
15、on of ASTM Committee D27 onElectrical Insulating Liquids and Gases and is the direct responsibility of Subcom-mittee D27.01 on Mineral.Current edition approved Jan. 1, 2008. Published February 2008. Originallyapproved in 1992. Last previous edition approved in 2000 as D 522200.2Refer to American Nat
16、ional Standard C57.121 IEEE Guide for Acceptance andMaintenance of Less Flammable Hydrocarbon Fluid in Transformers.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to
17、the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D 2668 Test Method for 2,6-di-tert-Butyl- p-Cresol and2,6-di-tert-Butyl Phenol in Electrical Insulating Oil byInfrared AbsorptionD
18、 2864 Terminology Relating to Electrical Insulating Liq-uids and GasesD 3487 Specification for Mineral Insulating Oil Used inElectrical ApparatusD 4059 Test Method forAnalysis of Polychlorinated Biphe-nyls in Insulating Liquids by Gas ChromatographyD 4768 Test Method for Analysis of 2,6-Ditertiary-B
19、utylPara-Cresol and 2,6-Ditertiary-Butyl Phenol in InsulatingLiquids by Gas Chromatography2.2 National Fire Protection Association Standards:National Electrical Code, Article 450-2342.3 Institute of Electrical and Electronics Engineers Stan-dard:C57.121 Guide for Acceptance and Maintenance of Less-F
20、lammable Hydrocarbon Fluids and its Maintenance inTransformers53. Terminology3.1 Definitions of terms related to this specification aregiven in Terminology D 2864. Significance of tests related tothis specification can be found in Guide D117and Specifica-tion D 3487.4. Sampling and Testing4.1 Take a
21、ll oil samples in accordance with Test MethodsD 923.4.2 Perform each test in accordance with the ASTM testmethod specified in Table 1.NOTE 1Because of the different needs of various users, items relatingto packaging, labeling, and inspection are considered to be subject tobuyer-seller agreement.NOTE
22、 2In addition to all other tests listed herein, it is soundengineering practice for the apparatus manufacturer to perform anevaluation of insulating oils in insulation systems, prototype structures, orfull-scale apparatus, or any combination thereof, to ensure suitable servicelife.5. Property Requir
23、ements5.1 High fire-point mineral insulating oil, as received, shallconform to the requirements of Table 1. The significance ofthese properties is covered in Guide D117.6. Keywords6.1 electrical insulating oil; fire point; flammability; insu-lating fluid; mineral insulating oil4Available from the Na
24、tional Fire Protection Association, Batterymarch Park,Quincy, MA 02269.5Available from the Institute of Electrical and Electronics Engineers, Inc. 345 E.47th St., New York, NY 10017-2394.TABLE 1 Property Requirements for High Fire-Point MineralInsulating Oils, as ReceivedProperty LimitASTM TestMetho
25、dPhysical:Visual examination Bright and clear D 1524Color, ASTM units, max. 2.5 D 1500Fire point, C, min. 300 D92Flash point, C, min. 275 D92Aniline Point, C, max. 125 D611Interfacial tension at 25 C, mN/m, min. 40 D 971Pour point, C, max. 21 D97Relative density, 15 C, max. 0.91 D 1298Viscosity, kin
26、ematic, cSt, max. D 4450 C (32 F) 250040 C (104 F) 130.0100 C (212 F) 14.0Electrical:Dielectric breakdown voltage at 60 HzVDE electrodes, min., kV at: D 18161.02 mm (0.04 in.) gap 20A2.03 mm (0.08 in.) gap 35ADisk electrodes, kV, min. 30 D 877Gassing tendency, l/min., max. +30 D 2300Dissipation fact
27、or at 60 Hz, %, max. D 92425 C 0.05100 C 0.30Chemical:Corrosive sulfur non-corrosive D 1275Inorganic chlorides and sulfates non-detectable D 878Acid number, mg KOH/g, max. 0.03 D 664 or D 974Water content, ppm, max. 35 D 1533Oxidation stabilityB72 h: D 2440sludge, % by mass, max 0.15acid number, mg
28、KOH/g, max 0.30Oxidation stability,B164 hsludge, % by mass, max 0.30acid number, mg KOH/g, max 0.60Oxidation stability (rotating bomb), minB195 D2112Oxidation inhibitor content, % by mass,max.0.40 D 2668 or D 4768PCB content, ppm: non-detectable D 4059AThese test limits by Test Method D 1816 are app
29、licable only to as receivednew oils. A new processed oil should have minimum breakdown strengths of 28 kVand 56 kV for a 1.02 mm (0.04 in.) or 2.03 mm (0.08 in.) gap respectively.BThe values for oxidation tests are typical requirements expected from a type IIoil (according to Specification D 3487).
30、All the commercially available highfire-point insulating liquid contained 0.4 % of antioxidant.D 5222 082ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that
31、 determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapprov
32、ed or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you fee
33、l that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 5222 083
