ASTM_D_2303_-_20e1.pdf

Designation:D2303201Standard Test Methods forLiquid-Contaminant,Inclined-Plane Tracking and Erosion ofInsulating Materials1This standard is issued under the fixed designation D2303;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript 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.1NOTEFig.4 was updated editorially in May 2021.1.Scope*1.1 These test methods cover the evaluation of the relativetracking and erosion resistance of insulating solids using theliquid-contaminant,inclined-plane test.2The following testmethods also can be used to evaluate the tracking resistance ofmaterials:Test Method D2132(contaminants:dust and fog)and Test Method D3638(contaminant:conductive liquiddrops).1.2 Two tracking and one erosion test procedure are de-scribed:1.2.1 A“variable voltage method”to evaluate resistance totracking.1.2.2 A“time-to-track method”to evaluate resistance totracking.1.2.3 A method for quantitative determination of erosion(Annex A1).1.3 While a particular contaminant solution is specified,other concentrations of the same contaminant,or differentcontaminants are used to simulate different environmental orservice conditions.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 Although this standard and IEC 60587-2007,“TestMethods for Evaluating Resistance to Tracking and Erosion forElectrical Insulating Materials Used Under Severe AmbientConditions,”differ in approach or detail,data obtained usingeither are technically equivalent.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific precautionary statements are given in Section 9.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3D374/D374M Test Methods for Thickness of Solid Electri-cal InsulationD1711 Terminology Relating to Electrical InsulationD2132 Test Method for Dust-and-Fog Tracking and ErosionResistance of Electrical Insulating MaterialsD3638 Test Method for Comparative Tracking Index ofElectrical Insulating Materials2.2 IEC Standard:IEC 60587-2007 Test Methods for Evaluating Resistance toTracking and Erosion for Electrical Insulating MaterialsUsed Under Severe Ambient Conditions3.Terminology3.1 Definitions:3.1.1 erosion,electrical,nthe progressive wearing awayof electrical insulation by the action of electrical discharges.3.1.2 erosion resistance,electrical,nthe quantitative ex-pression of the amount of electrical erosion under specificconditions.1These test methods are under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and are the direct responsibility ofSubcommittee D09.12 on Electrical Tests.Current edition approved Aug.1,2020.Published September 2020.Originallyapproved in 1964.Last previous edition approved in 2013 as D2303 13.DOI:10.1520/D2303-20E01.2K.N.Mathes,“Surface Failure Measurements,”Chapter 4 of EngineeringDielectrics Volume IIB Electrical Properties of Solid Insulating Materials:Mea-surement Techniques,ASTM STP 926,ASTM International,1987.3For 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 the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.1.3 track,na partially conducting path of localizeddeterioration on the surface of an insulating material.3.1.4 tracking,nthe process that produces tracks as aresult of the action of electric discharges on or close to theinsulation surface.3.1.5 tracking,contamination,ntracking caused by scin-tillations that result from the increased surface conduction dueto co