GB/T 4909.7-2009
ActiveTest methods for bare wires - Part 7: Mandrel winding test
裸电线试验方法 第7部分：卷绕试验
Application Summary AI generated
This standard specifies the mandrel winding test method for evaluating the adhesion and ductility of metallic coatings on bare electrical wires. It is applied in the manufacturing and quality control of conductors, such as copper or aluminum wires used in power cables and overhead transmission lines, to ensure the coating does not crack or peel when wound around a mandrel of a specified diameter. The test is critical for verifying the mechanical integrity of plated or clad wires under bending stresses encountered during installation and service.
Related Standards
GB/T 19666-2005
Flame retardant and fire resistant wires and cables General
GB/T 6108.3-2003
Basic dimensions of winding wires--Part 3: Dimensions of conductors of insulated rectangular copper winding wires
GB/T 19216.21-2003
Tests for electric cables under fire conditions--Circuit integrity--Part 21: Procedures and requirements--Cables of rated voltage up to and including 0.6/1.0kV
GB/T 19216.11-2003
Tests for electric cables under fire conditions--Circuit integrity--Part 11: Apparatus--Fire alone at a flame temperature of at least 750℃
GB/T 6108.2-2003
Basic dimensions of winding wires--Part 2: Maximum overall diameters of enamelled round winding wires
GB/T 18889-2002
Electric cables-test methods for accessories for power cables with rated voltages from 6kV(Um=7.2kV)up to 35kV(Um=40.5kV)
GB/T 18487.3-2001
Electric vehicle conductive charging system--A.C./D.C.electric vehicle charging station
GB/T 18487.2-2001
Electric vehicle conductive charging system--Electric vehicles requirements for conductiveconnection to an A.C./D.C.supply
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.