1、Designation:D92315Standard Practices forSampling Electrical Insulating Liquids1This standard is issued under the fixed designation D923;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
2、 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.1.Scope1.1 These practices cover sampling of new electrical insu-lating liquids includ
3、ing oils,askarels,silicones,syntheticliquids,and natural ester insulating liquids as well as thoseinsulating liquids in service or subsequent to service in cables,transformers,circuit breakers,and other electrical apparatus.These practices apply to liquids having a viscosity of less than6.476 10-4m2
4、/s(540 cSt)at 40C(104F).1.2 Representative samples of electrical insulating liquidsare taken for test specimens so that the quality pertinent to theiruse may be determined.The quality in different portions of agiven container,or the average quality of the whole bulk maybe ascertained if desired.1.3
5、The values stated in SI units are regarded as the standardwhere applicable.Inch pound units are used where there is noSI equivalent.1.4 These practices also include special techniques anddevices for sampling for dissolved gases-in-oil(DGA)(D3612),water(D1533)and particles(D6786).1.5 For ease of use,
6、this document has been indexed asfollows:Section TitleSection/ParagraphMandatory Conditions and General InformationSection 5Description of Sampling Devices and ContainersSection 6,Annex A1,Appendix X2Most Frequently Used Sampling Techniques forElectrical ApparatusCollecting Samples from Electrical E
7、quipment Using Bottlesand CansSection 7,Appendix X1,Appendix X2Collecting Samples from Electrical Equipment Using GlassSyringes(DGA and Water Analysis)Section 8Section TitleSection/ParagraphCollecting Samples from Electrical Equipment UsingStainless Steel Cylinders(DGA and Water Analysis)Section 9Sa
8、mpling of Cans,Drums,Tank Cars,Tank Trucks andSmall Electrical EquipmentSampling Using the Dip-Type Device(drum thief)Section 10Sampling Using the Pressure-Type DeviceSection 11,Annex A1.1Sampling Using the Tank Car-Type DeviceSection 12,Annex A1.2Sampling Cable FeedersMandatory ConditionsSection 13
9、General ConsiderationsSection 14Sampling Using the Manifold-Type DeviceSection 15,Annex A1.3Cleaning,Preparation,Storage,and Handling ofSamplingContainersSection 16Storage,Packaging and Shipping of SamplesSection 17Cleaning and Storage of Sampling DevicesSection 18Sample InformationSection 19Mandato
10、ry InformationConstruction of Sampling DevicesAnnex A1Determination of Electrical Apparatus TemperatureAppendix X1Sample Container TypesAppendix X21.6 Handle askarels containing polychlorinated biphenyls(PCBs)according to federal and local regulations existing forthat country.For example,the federal
11、 regulations concerningPCBs in the United States can be found in 40 CFR Part 761.1.7 Properly contain,package and dispose of any liquid ormaterial resulting from the use of these practices in a mannerthat is in accordance with local and state regulations specific tothe country in which the samples a
12、re taken.1.8 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 and health practices and determine the applica-bility of regulatory limitations prior to use.Specific
13、warningstatements are given in 1.6,1.7,Section 5,10.1,13.2,15.2.3,Section 16,and 18.2.These practices involve close contactwith the electrical insulating liquids being sampled as well asliquids and other materials used to clean the sampling tools anddevices.When required,or as a matter of diligence
14、to personalsafety,use personal protective equipment(PPE).1These practices are under the jurisdiction of ASTM Committee D27 onElectrical Insulating Liquids and Gases and are the direct responsibility ofSubcommittee D27.07 on Physical Test.Current edition approved Oct.1,2015.Published October 2015.Ori
15、ginallyapproved in 1947.Last previous edition approved in 2007 as D923 07.DOI:10.1520/D0923-15.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.Referenced Documents2.1 ASTM Standards:2D1533 Test Method for Water in Insulating Liquids byC
16、oulometric Karl Fischer TitrationD1933 Specification for Nitrogen Gas as an Electrical Insu-lating MaterialD3612 Test Method for Analysis of Gases Dissolved inElectrical Insulating Oil by Gas ChromatographyD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD6786 Test Method for Particle Count in Mineral InsulatingOil Using Automatic Optical Particle Counters3.Terminology3.1 Definitions:3.1.1 samplingthe obtaining of that amount of a materialwhich is adequate for making the requ
