What are the wire and cable testing items?
- Electrical performance testing
Conductor Resistance: Tests the electrical conductivity of wire and cable, i.e. the resistance value, which is an important indicator to assess the ability of wire and cable to transmit current.
Insulation resistance: testing the resistance value of insulating materials to assess their insulation performance under the action of electric field to prevent current leakage and short circuit.
Industrial Frequency Withstand Voltage Test: Using AC voltage to conduct voltage withstand test on wires and cables to check whether their insulation performance is stable under the specified voltage.
Leakage Current (Leakage Current): Under the rated working voltage, the leakage current of the wire and cable is checked to ensure that it will not cause safety problems due to excessive leakage current under normal working conditions.
- Mechanical performance testing
Bending Test, Static Bending Test, Bending Test: Evaluates the mechanical strength and durability of wire and cable during repeated bending or twisting.
Abrasion test: Tests the abrasion resistance of wire and cable surfaces to determine whether they are susceptible to wear and tear during long-term use.
Twisting test: simulates the twisting force that wire and cable may be subjected to in actual use, and examines its resistance to twisting.
- Non-electrical performance testing
Insulation thickness and sheath thickness measurement: Ensure that the insulation and sheath thickness of the wire and cable meet the standard requirements to ensure its insulation and mechanical protection performance.
Measurement of external dimensions and ellipticity: check whether the external dimensions and ellipticity of the wire and cable meet the design requirements to ensure the convenience of its installation and use.
- Special performance tests
Determination of halogen content: Especially for low-smoke halogen-free cables, it is necessary to determine the halogen content in the cables to assess their safety for application in specific environments.
Flame retardant performance testing: The flame retardant performance of wires and cables is evaluated according to relevant standards to ensure that they can slow down the spread of fire in case of fire and other emergencies.
- Other testing projects
Sampling: Determine the sampling method and the number of samples in accordance with the relevant standards to ensure the representativeness of the test results.
Marking test: To confirm whether the marking on the wire and cable is clear, continuous and in line with the standard requirements, so that users can correctly identify and use.