What are the tests and inspections of wires and cables?

Wires and cables are important components of power transmission and communication and play an important role. In order to ensure that the card is safe and usable, a number of tests and inspections are required. Next, this article will mainly introduce to you the main tests and inspections that need to be carried out during the use of wires and cables.

What are the testing and inspection methods?

Appearance inspection

First, the appearance of the wires and cables needs to be inspected, including whether there is damage, breakage, deformation, etc. If damage is found, it needs to be replaced in time to avoid normal use of the product.

Insulation resistance test

Insulation resistance is one of the important indicators of wire and cable performance. Before using wires and cables, an insulation resistance test needs to be performed. The test method can be carried out using a DC insulation resistance tester, and the test results should meet the specified requirements.

Withstand voltage test

Withstand voltage refers to the maximum voltage that wires and cables can withstand within a specified period of time. In order to ensure safe and reliable use, voltage withstand testing is required. The test method is carried out using an AC high voltage tester, and the test results should meet the specified requirements.

Electrical performance test

The electrical performance of wires and cables is an important guarantee for their reliable operation. During use, electrical performance tests need to be carried out regularly, including tests of insulation resistance, conductor resistance, capacitance, inductance and other indicators. The test results should meet the standard requirements.

Mechanical performance testing

Cable products will be subjected to mechanical effects such as tension and bending during use, so mechanical performance testing is required. Test items include tensile test, bending test, wear resistance test, etc.

Environmental reactivity test

The use environment of bare conductors is most affected by external factors, and will be affected by various weather conditions such as rain and snow. During use, wires and cables will be exposed to different environmental conditions, such as temperature, humidity, chemicals, etc. In order to ensure the normal use of wires and cables under various environmental conditions, environmental adaptability testing is required. Test methods include temperature test, humidity test, chemical test, etc.

Fire resistance test

As a kind of power transmission equipment, wires and cables need to have certain fire resistance. In order to ensure that it can maintain normal operation in a fire accident, fire resistance performance testing needs to be carried out during use. Test items include combustion test, thermal stress test, smoke concentration test, etc.

Physical performance testing

Wires and cables also need to undergo physical performance testing to ensure their normal service life and reliability. Physical performance test items include compressive strength test, peeling force test, and impact resistance test. The test results should meet the specified requirements.

Environmental testing

Some environmental pollutants will be produced during the production and use of wires and cables. In order to protect the environment, environmental testing is required. Environmental testing items include heavy gold content and volatile organic compound test results, which should meet environmental protection requirements.

The above are the main tests and inspections that need to be carried out during the use of wires and cables. Through testing and inspection of products, we can ensure that their performance meets standard requirements and ensure the safety and reliability of power transmission and communication.