How to Test the Air Tightness and Waterproofness of Automotive Wiring Harness

Kable-X`s business philosophy is sincerity, responsibility, innovation, teamwork, passion, and sharing. The company's core team has many years of experience in the Wire Harness industry, has the ability to develop and design wire harnesses, and can provide customers with one-stop service for connectors. As a high-end wire harness customization manufacturer, our products involve the industrial control field, medical field, communication field and new energy industry. We have produced and processed many Power Equipment Wire Harness, Outdoor Waterproof Wire Harness, Medical Equipment Wire Harness and automotive Wiring Harness. Some of these customized Cable Assembly has water resistance requirements. Now take the car wiring harness as an example to see how to detect air tightness and water resistance.
As the connecting wire connecting the car controller and other electrical modules, the automobile wiring harness carries the transmission task of current and corresponding signals. Therefore, the automobile wiring harness has certain waterproof requirements. This is because if the waterproofing of the live wire harness is unqualified, water may be Entering the controller or electrical module through the wiring harness may cause failure or even a short circuit, so the waterproof performance of the wiring harness is necessary, so how do you know whether the air tightness of the waterproofed automotive wiring harness meets the requirements? That is to say, how is the air tightness and waterproof detection of the automobile wiring harness done?
No matter what level of waterproof level testing is to be done, the key lies in the equipment and the air tightness test fixture of the automobile wiring harness. Generally, it is done by the direct testing method through the air tightness and waterproof testing equipment of the automobile wiring harness. The test pressure of the waterproof testing equipment can be set according to the requirements, that is to say, only one equipment is needed to achieve IP67 or IP68 level measurement. The specific air tightness and waterproof detection of automobile wiring harness is to directly inflate after sealing the joints on both sides of the Connector, and then the sensor in the air tightness and waterproof detection device of the automobile wiring harness will detect the change of internal air pressure in real time, and the lower limit of the leakage value can be set. Judging whether the tightness of the joints and wires on both sides meets the requirements, there will be a NG light + alarm prompt for unqualified products.