ASTM_D149_09新版标准规范

Designation:D149-09An American National StandardProfessional ASTM_D149-09 Test Equipment ManufacturerINTERNATIONALEmail:server@kepin17.com Website http://www.kepin17.com/en/Standard Test Method forDielectric Breakdown Voltage and Dielectric Strength ofSolid Electrical Insulating Materials at Commercial PowerFrequenciesThis standard is issued under the fixed designation D149: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 (s)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.8 This test method is similar to IEC Publication 243-1.All1.1 This test method covers procedures for the determina-procedures in this method are included in IEC 243-1.Differ-tion of dielectric strength of solid insulating materials atences between this method and IEC 243-1 are largely editorial.commercial power frequencies,under specified conditions.2.31.9 This standard does not purport to address all of the1.2 Unless otherwise specified,the tests shall be made at 60safety concerns,if any,associated with its use.It is theHz.However,this test method is suitable for use at anyresponsibility of the user of this standard to establish appro-frequency from 25 to 800 Hz.At frequencies above 800 Hz.priate safety and health practices and determine the applica-dielectric heating is a potential problem.bility of regulatory limitations prior to use.Specific hazard1.3 This test method is intended to be used in conjunctionstatements are given in Section 7.Also see 6.4.1.with any ASTM standard or other document that refers to thistest method.References to this document need to specify the2.Referenced Documentsparticular options to be used (see 5.5).2.1 ASTM Standards:41.4 It is suitable for use at various temperatures,and in anyD374 Test Methods for Thickness of Solid Electrical Insu-suitable gaseous or liquid surrounding medium.lation1.5 This test method is not intended for measuring theD618 Practice for Conditioning Plastics for Testingdielectric strength of materials that are fluid under the condi-D877 Test Method for Dielectric Breakdown Voltage oftions of test.Insulating Liquids Using Disk Electrodes1.6 This test method is not intended for use in determiningD1711 Terminology Relating to Electrical Insulationintrinsic dielectric strength,direct-voltage dielectric strength,D2413 Practice for Preparation of Insulating Paper andor thermal failure under electrical stress (see Test MethodBoard Impregnated with a Liquid DielectricD3151).D3151 Test Method for Thermal Failure of Solid Electrical1.7 This test method is most commonly used to determineInsulating Materials Under Electric Stress3the dielectric breakdown voltage through the thickness of a testD3487 Specification for Mineral Insulating Oil Used inspecimen (p