ANSI ASTM D902-2012 Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation《电气绝缘用涂覆柔性树脂玻璃织物和玻璃带状织物的试验方法》.pdf
《ANSI ASTM D902-2012 Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation《电气绝缘用涂覆柔性树脂玻璃织物和玻璃带状织物的试验方法》.pdf》由会员分享,可在线阅读,更多相关《ANSI ASTM D902-2012 Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation《电气绝缘用涂覆柔性树脂玻璃织物和玻璃带状织物的试验方法》.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D902 12Standard Test Methods forFlexible Resin-Coated Glass Fabrics and Glass Fabric TapesUsed for Electrical Insulation1This standard is issued under the fixed designation D902; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, 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.1. Scope*1.1 These test
3、 methods cover procedures for the testing ofresin-coated glass fabrics and glass fabric tapes (Note 1)tobeused as electrical insulation.NOTE 1Methods of testing varnished cloths and tapes are given inMethods D295.1.2 The warp threads in fabrics are the threads that areparallel with the length dimens
4、ion as manufactured.1.3 The procedures appear as follows:Procedure SectionASTM TestMethod ReferenceBreaking Strength 22 28 D828Conditioning 68 .Dielectric Breakdown Voltage and Di-electric Strength29 38 D149, D295Dissipation Factor and Relative Permit-tivity52 60 D150, E104,D5032Effect of Elevated T
5、emperature 39 45 D1830Resistance to Oil 46 51 D3487Sampling 35 .Thermal Endurance 68 D1830Thickness 16 21 D374Thread Count 1215 .Weight 911 .Weight Loss at Elevated Temperature 61 67 D54231.4 The values stated in inch-pound units are to be regardedas the standard. The values in parentheses are for i
6、nformationonly.1.5 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.
7、 Specific warningstatement are given in 35.1.1 and 58.1.2. Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permit-
8、tivity (Dielectric Constant) of Solid Electrical InsulationD295 Test Methods for Varnished Cotton Fabrics Used forElectrical InsulationD374 Test Methods for Thickness of Solid Electrical Insu-lation (Withdrawn 2013)3D828 Test Method for Tensile Properties of Paper andPaperboard Using Constant-Rate-o
9、f-ElongationApparatus(Withdrawn 2009)3D1711 Terminology Relating to Electrical InsulationD1830 Test Method for Thermal Endurance of FlexibleSheet Materials Used for Electrical Insulation by theCurved Electrode MethodD3487 Specification for Mineral Insulating Oil Used inElectrical ApparatusD5032 Prac
10、tice for Maintaining Constant Relative Humidityby Means of Aqueous Glycerin SolutionsD5423 Specification for Forced-Convection Laboratory Ov-ens for Evaluation of Electrical InsulationE104 Practice for Maintaining Constant Relative Humidityby Means of Aqueous Solutions1These methods are under the ju
11、risdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and are the direct responsibility ofSubcommittee D09.07 on Flexible and Rigid Insulating Materials.Current edition approved April 1, 2012. Published April 2012. Originallyapproved in 1946. Last previous edition approve
12、d in 2006 as D902 06. DOI:10.1520/D0902-12.2For 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.3The last approved
13、 version of this historical standard is referenced onwww.astm.org.*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 States12.2 IEEE Standard:IEEE No. 1 General Principles for Tem
14、perature Limits in theRating of Electrical Equipment4SAMPLING3. Selecting Sample Rolls3.1 Sample shipments of resin-coated glass fabrics and glassfabric tapes as specified in 3.2 and 3.3. Select the rolls or padsin such a manner as to be representative of the shipment.3.2 FabricSelect one roll from
15、each ten rolls or fractionthereof in a shipment of full-width fabric.3.3 TapeThe producer and consumer shall agree upon thenumber of rolls selected. Unless otherwise specified, a mini-mum of three rolls per lot shall be selected. For samplingpurposes, a lot consists of identifiable materials of the
16、sametype manufactured in one production run and offered fordelivery at the same time.4. Selecting Samples4.1 Cut off and discard not less than two turns of fabric orsix turns of tape from each roll or pad selected for samplingbefore the samples are selected.4.2 From shipments such as sheets of fabri
17、c or strips of tape,take samples representative of the shipment in accordance with4.1.5. Selecting Test Specimens5.1 Prepare the test specimens from samples as selected inSection 4 and as provided for in the individual test methods.CONDITIONING6. Terminology6.1 Definitions of Terms Specific to This
18、Standard:6.1.1 conditioning (of resin-coated glass fabrics or glassfabric tapes),nthe process of exposing test specimens of thematerial to a specified temperature, or to an atmosphere ofspecified relative humidity and temperature, for a specifiedperiod of time.7. Significance and Use7.1 The electric
19、al properties of resin-coated glass fabrics areaffected by their temperature and moisture content. For thisreason it is necessary to control these properties for a specifiedtime immediately prior to testing in order to attain reasonablygood reproducibility of test values. The time of exposure to the
20、conditioning atmosphere must be long enough to permit thetest specimen to reach a relatively stable value. Usually themoisture content of these materials has little effect on themechanical properties.8. Conditioning8.1 Unless otherwise specified in the individual testmethods, condition test specimen
21、s as described in 8.1.1, 8.1.2,or 8.1.3. In matters of dispute, consider 8.1.2 the refereemethod. Use the method described in 8.1.3 only if specificallyagreed upon by the producer and consumer.8.1.1 Condition the test specimen for 48 h in the StandardLaboratory Atmosphere (50 6 2 % relative humidity
22、 at atemperature of 23 6 1C (73.4 6 1.8F), and conduct the testsin the Standard Laboratory Atmosphere.8.1.2 Condition the test specimen for 48 h in the StandardLaboratory Atmosphere (50 6 2 % relative humidity at atemperature of 23 6 1C (73.4 6 1.8F), and conduct the testsimmediately upon removal of
23、 the test specimen from theconditioning room or chamber.8.1.3 Do not condition the test specimens if it is desired totest the material in the condition as received by the purchaser,but allow the packages containing the rolls of cloth or tapefrom which the specimens are to be taken to reach approxi-m
24、ately test-room temperature before the packages are openedand the specimens cut. Remove the specimens to be testedfrom the roll as required and test immediately, unless otherwisespecified.WEIGHT9. Terminology9.1 Definitions of Terms Specific to This Standard:9.1.1 weight (of resin-coated glass cloth
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