1、Designation:D 2233 86(Reapproved 1997)Standard Specification forChlorinated Aromatic Hydrocarbons(Askarels)forCapacitors1This standard is issued under the fixed designation D 2233;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the y
2、ear of last revision.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 covers synthetic nonflammable elec-trical insulating liquids of the chlorinated aromatic hydroca
3、r-bon type known as askarels,which are used as an electricalinsulating and cooling medium in capacitors.This specificationincludes liquids that were previously available and are still inuse in apparatus.1.2 Insulation systems incorporating these askarels andcellulosic or other organic materials may,
4、when arced,producegaseous mixtures that are moderately flammable.1.3 Askarels covered by this specification are of four typesas follows:1.3.1 Type ABiphenyl that has been chlorinated to acontent of 42 weight%.1.3.2 Type BBiphenyl that has been chlorinated to achlorine content of 54 weight%.1.3.3 Typ
5、e CA mixture of approximately 75%Type D2233 B and 25%trichlorobenzene.1.3.4 Type DThe same as Type A,except that the higherboiling homologs have been removed to a maximum level of0.4%.NOTE1These statements are merely descriptions of the materialscurrently in common use and are not intended as part o
6、f this specification,which is based on the physical and chemical properties prescribed in Table1.NOTE2Current governmental regulations prohibit the manufactureand sale of polychlorinated biphenyls(askarels).This method is beingmaintained for reference of those units that are still in service.NOTE3Fo
7、r information on PCBs in mineral oils,refer to MethodD 4059.2.Referenced Documents2.1 ASTM Standards:D 88 Test Method for Saybolt Viscosity2D 92 Test Method for Flash and Fire Points by ClevelandOpen Cup3D 97 Test Method for Pour Point of Petroleum Products3D 664 Test Method forAcid Number of Petrol
8、eum Productsby Potentiometric Titration3D 877 Test Method for Dielectric Breakdown Voltage ofInsulating Liquids Using Disk Electrodes4D 923 Test Method for Sampling Electrical Insulating Liq-uids4D 924 Test Method for Dissipation Factor(or Power Factor)and Relative Permittivity(Dielectric Constant)o
9、f Electri-cal Insulating Liquids4D 974 Test Method for Acid and Base Number by Color-Indicator Titration3D 1169 Test Method for Specific Resistance(Resistivity)ofElectrical Insulating Liquids4D 1218 Test Method for Refractive Index and RefractiveDispersion of Hydrocarbon Liquids3D 1533 Test Methods
10、for Water in Insulating Liquids(KarlFischer Reaction Method)4D 1810 Test Method for Specific Gravity of Askarels4D 1820 Test Method for Hydrolyzable Chlorine Com-pounds in ChlorinatedAromatic Hydrocarbons(Askarels)4D 1821 Test Method for Inorganic Chlorides in Askarels4D 1903 Test Method for Coeffic
11、ient of Thermal Expansionof Electrical Insulating Liquids of Petroleum Origin,andAskarels4D 1936 Test Method for Thermal Stability of ChlorinatedAromatic Hydrocarbons(Askarels)5D 2129 Test Method for Color of Water White ElectricalInsulating Liquids4D 4059 Test Method forAnalysis of Polychlorinated
12、Biphe-nyls in Insulating Liquids by Gas Chromatography43.Terminology3.1 Definitions:3.1.1 askarela generic term for a group of synthetic,fire-resistant,chlorinated aromatic hydrocarbons used as elec-trical insulating liquids.They have a property under arcingconditions such that any gases produced wi
13、ll consist predomi-nantly of noncombustible hydrogen chloride with lesseramounts of combustible gases.4.Detail Requirements4.1 Askarels for use in capacitors shall conform to the1This specification is under the jurisdiction of ASTM Committee D-27 onElectrical Insulating Liquids and Gasesand is the d
14、irect responsibility of Subcom-mittee D27.02on Gases and Synthetic Liquids.Current edition approved Jan.31,1986.Published March 1986.Originallypublished as D 2233 63 T.Last previous edition D 2233 85.2Annual Book of ASTM Standards,Vol 04.04.3Annual Book of ASTM Standards,Vol 05.01.4Annual Book of AS
15、TM Standards,Vol 10.03.5Discontinued;see 1986 Annual Book of ASTM Standards,Vol 10.03.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superceded and replaced by a new version or discontinued.Contact ASTM International(www.astm.
16、org)for the latest information.requirements prescribed in Table 1.NOTE4Since October 1971 askarel produced in the United States foruse in capacitors has conformed to Type D as shown in Table 1.Materialspreviously available are still in use in the field.NOTE5These materials sometimes contain additives whose presencemay interfere with the chemical tests prescribed in Table 1.Unless it isknown that no additives are present,results of the chemical tests may bemisleading.5.Sampling and Test Methods5.
