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GB/T 31838.4-2019 Solid insulating materials—Dielectric and resistive properties—Part 4:Resistive properties(DC methods)—Insulation resistance (USD) via email in 1-3 business day VALID
GB/T 29311-2012 Electrical insulating materials—A.C.voltage endurance evaluation—Introduction (USD) via email in 1-3 business day VALID
GB/T 31838.3-2019 Solid insulating materials—Dielectric and resistive properties—Part 3:Resistive properties(DC methods)—Surface resistance and surface resistivity (USD) via email in 1-3 business day VALID
GB/Z 28820.3-2012 Long-term radiation ageing in polymers - Part 3: Procedures for in-service monitoring of low-voltage cable materials (USD) via email in 1-3 business day VALID
GB/T 27749-2011 Test procedure for thermal endurance of insulating varnishes—Electric strength method (USD) via email in 1-3 business day VALID
GB/T 29305-2012 Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials (USD) via email in 1-3 business day VALID
GB/T 29313-2012 Test method for thermal transmission properties of electrical insulation materials (USD) via email in 1-3 business day VALID
GB/T 11026.2-2012 Electrical insulating materials - Thermal endurance properties - Part 2: Choice of test criteria (USD) via email in 1-3 business day VALID
GB/T 5591.2-2002 Combined flexble materials for electrical insulation--Part 2:Methods of test via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 35679-2017 Measuring method for electromagnetic parameters of solid materials at microwave frequencies using waveguide (USD) via email in 1-3 business day VALID
GB/T 17648-1998 Insulating liquids--Determination of the Partial Discharge Inception Voltage (PDIV)--Test procedure via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 10580-2003 STANDARD conditions for use prior to and during the testing of solid insulating materials via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 1408.1-1999 Methods of test for electric strength of solid insulating materials—Tests at power frequencies via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 15022.4-2009 Resin based reactive compounds used for electrical insulation—Part 4:Unsaturated polyester based impregnating resins (USD) via email in 1-3 business day VALID
GB/T 1303.6-2009 Industrial rigid laminated sheets based on thermosetting resins for electrical purposes—Part 6:Requirements for rigid laminated sheets based on phenolic resins (USD) via email in 1-3 business day VALID
GB/T 6554-2003 Resin based reactive compounds used for electrical insulation—Part 2:Methods of test—Methods for coating pourders for electrical purposes via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 1303.3-2008 Industrial rigid laminated sheets based on thermosetting resins for electrical purposes—Part 3:Requirements for types of industrial rigid laminated sheets (USD) via email in 1-3 business day VALID
GB/T 1303.2-2002 Specification for industrial rigid laminated sheets based on thermosetting tresins for electrical purposes--Part 3:Specifications for individual materials--Sheet 3:Requirements for rigid laminated sheets based on melamine resins via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 26169-2010 Electrical insulating materials—Method to evaluate the resistance to tracking and erosion—Rotating wheel dip test (USD) via email in 1-3 business day VALID
GB/T 18381-2001 Specification for industrial rigid laminated sheets based on thermosetting resins for electrical purposes—Definitions,designations and general requirements via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
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