Common pre-shipment tests for cables

Before cables leave the factory, they undergo a series of stringent tests to ensure their quality and performance meet the required standards. Here are some common pre-shipment tests for cables (The pictures are of the equipment of our factory):

1.Conductor Resistance Test:
Measures the resistance of the cable conductor to ensure it meets the required conductivity standards.
2.Insulation Resistance Test:
Uses an insulation resistance tester to measure the resistance of the cable's insulation layer, ensuring good insulation performance.
3.High Voltage Test:
Applies a high voltage current to the cable to test its insulation performance and withstand capability under high voltage conditions.
4.Withstand Voltage Test:
Exposes the cable to a voltage several times higher than its normal operating voltage to test its ability to withstand high voltage without breakdown.
5.Breakdown Test:
Tests the breakdown voltage of the cable by gradually increasing the voltage until the insulation fails, determining the insulation strength.
6.Capacitance and Dissipation Factor Test:
Measures the cable's capacitance value and dielectric dissipation factor to evaluate its electrical performance.
7.Thermal Extension Test:
Exposes the cable to a high-temperature environment and measures its thermal extension rate to ensure it does not deform excessively at high temperatures.
8.Aging Test:
Places cable samples in an accelerated aging environment to test performance changes after aging, assessing the cable's lifespan.
9.Mechanical Performance Test:
Includes tensile strength, bending test, and compression test to check the cable's mechanical strength and toughness.
10.Flame Test:
Conducts a flame burning test on the cable to test its flame retardant properties, ensuring it does not burn and spread quickly in the event of a fire.
11.Low-Temperature Bending Test:
Bends the cable in a low-temperature environment to ensure it maintains good flexibility under cold conditions.
12.Visual Inspection:
Conducts a thorough inspection of the cable's appearance to ensure there are no mechanical damages, surface defects, or other flaws that could affect its use.
13.Dimensional Measurement:
Measures the cable's outer diameter, insulation thickness, and sheath thickness to ensure they meet design and standard specifications.