What are the incoming tests for wire harness processing plant wires?

With people's higher and higher requirements for the quality of life, wires are indispensable supporting facilities in people's lives, and people pay more and more attention to the safe use of wires. Although ISO9000 safety certification system is certified, most products in the whole wire and cable market are unqualified. These unqualified products have not been treated reasonably, and they flood the whole wire and cable market. The inferior products that meet UL seriously affect the sound development of the market. In order to ensure that customers' products comply with UL certification and safety certification, the wire harness processing factory mainly inspects the current, resistance, conductivity, voltage, size and appearance of wires.

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According to the physical and mechanical properties of wires, the inspection is mainly carried out from the aspects of voltage, conductivity, size and appearance, etc. The details are as follows: 1. Inspection of the size and appearance of wires and cables: ① The UL number is generally marked on wires, and the wire harness processing factory When importing suppliers, it is necessary to check whether the UL certificate of the wire supplier is within the validity period. ② Whether the UL certification report is true and valid. ③ Whether there is any dirt on the appearance, and whether the actual size of the wire is consistent with the size of the wire specification sheet. 2. Withstand voltage test of wires and cables: withstand voltage test, AC 300V, mainly product performance test, finished wire withstand voltage test: KV/min 5000V The finished product withstand voltage test is AC voltage test, also called power frequency withstand voltage test, AC withstand voltage test is to apply a certain value higher than the working voltage (rated voltage) to the insulation of finished wires and cables, and maintain it for a certain time without the insulation breaking down. Each product must undergo a withstand voltage test before leaving the factory, and the wire harness processing factory must ask the wire supplier to provide a test report. 3. Aging test of wires and cables: During storage, it is forbidden to come into contact with acidic, alkaline and corrosive substances, and store them separately in isolation. Insulated wires and cables should be stored in dry and ventilated warehouses, and the relative humidity should not exceed 75% to avoid direct sunlight. Exposure causes premature aging of the insulation layer. 4. Under the high temperature impact of 140 degrees and the low temperature of-30 degrees, the wire must not crack, etc. Wires, terminals and connectors are the main inspection materials of wiring harness processing factories. In order to ensure the quality of customer products, wiring harness processing factories must test every test data of wires. Suzhou Huichengyuan has an experienced and professional technical team. We can provide you with thoughtful services in the fields of wiring harness processing, terminal wire processing, connectors or automotive wiring harnesses.  

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