1、Designation:D605497(Reapproved 2004)An American National StandardStandard Practice forConditioning Electrical Insulating Materials for Testing1This standard is issued under the fixed designation D6054;the number immediately following the designation indicates the year oforiginal adoption or,in the c
2、ase 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.1.Scope1.1 This practice covers procedures for conditioning elec-trical insulating materials(although not
3、necessarily to equilib-rium)prior to testing and the conditions under which they shallbe tested.In general the physical and electrical properties ofelectrical insulating materials are influenced by temperatureand relative humidity in a manner that materially affects testresults.In order that reliabl
4、e comparisons may be made ofdifferent materials and between different laboratories,it isnecessary to standardize the humidity and temperature condi-tions to which specimens of these materials are subjected priorto and during testing.1.2 This practice is similar to Practice D618.1.3 This standard doe
5、s 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.2.Referenced Documents2.1 ASTM Standard
6、s:2D618 Practice for Conditioning Plastics for TestingD709 Specification for Laminated Thermosetting MaterialsD1711 Terminology Relating to Electrical InsulationD5032 Practice for Maintaining Constant Relative Humidityby Means of Aqueous Glycerin Solutions3.Terminology3.1 Definitions:3.1.1 room temp
7、erature,na temperature in the range from20 to 30C.3.1.2 standard laboratory atmosphere,nan atmospherehaving a temperature of 23 6 2C and a relative humidity of 506 5%.3.1.2.1 DiscussionWhere closer tolerances on atmo-spheric conditions are required,61C on temperature or 62%on relative humidity,or bo
8、th,may be specified.3.1.3 standard laboratory temperature,na temperature of23 6 2C.3.1.4 For definitions of other terms relating to electricalinsulating materials,refer to Terminology D1711.4.Significance and Use4.1 Conditioning of specimens may be undertaken:(1)forthe purpose of bringing the materi
9、al into equilibrium withnormal or average room conditions;(2)simply to obtainreproducible results;or(3)to subject the material to abnormalconditions of temperature or humidity in order to predict itsservice behavior.However,it is not within the scope of thispractice to define procedures for determin
10、ing aging character-istics of electrical insulating materials.4.2 The conditioning procedures prescribed in this practiceare designed to obtain reproducible results and may give valuessomewhat different from values under equilibrium at normalconditions,depending upon the particular material and test
11、.Toensure substantial equilibrium under normal conditions ofhumidity and temperature,however,may require many days orweeks depending upon thickness and type of material and itsprevious history.Consequently,conditioning for reproducibil-ity must of necessity be used for general purchase and productco
12、ntrol tests.4.3 Any reference to this practice must include the informa-tion needed for designating the conditioning procedure(andtesting procedure,if applicable),as defined in Section 7,or oneof the standard conditioning procedures to be followed,asdefined in Section 8.5.Sampling5.1 Sample in accor
13、dance with the ASTM or other testmethod or specification for the specific properties to bedetermined.6.Test Specimens6.1 Prepare test specimens of the quantity and type specifiedin the referencing standard for the properties to be determined.1This practice is under the jurisdiction of ASTM Committee
14、 D09 on Electricaland Electronic Insulating Materials and is the direct responsibility of SubcommitteeD09.12 on Electrical Tests.Current edition approved March 1,2004.Published March 2004.Originallyapprived in 1997.Last previous edition approved in 1997 as D6054 97.DOI:10.1520/D6054-97R04.2For refer
15、enced 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshoho
16、cken,PA 19428-2959.United StatesNOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest information17.Designations for Conditioning7.1 Designation for Conditioning Prior to Test:7.1.1 Conditioning of test specimens may be designated asfollows:7.1.1.1 A number indicating in hours the duration of condi-tioning,7.1.1.2 A number indicating in degrees Celsius the condi-tioning temperature,and7.1.1.3 Anumber indi
