GB/T 4909.4-2009
ActiveTest methods for bare wires - Part 4: Torsion test
裸电线试验方法 第4部分：扭转试验
Application Summary AI generated
This standard specifies the torsion test method for bare wires, used to assess their ability to withstand twisting forces without fracture or surface defects. It is applied in the electrical industry for quality control of copper, aluminum, and alloy conductors during manufacturing, as well as for acceptance testing of wires used in power transmission lines and cable production.
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.