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How to test the IP67 waterproof grade of charging plug

The general charging plug is not waterproof, so it is generally used indoors. However, some charging plugs that need to be used outdoors or industrial charging plugs need to have higher sealing performance. In order to meet the requirements of outdoor charging, waterproof treatment is needed.The main evaluation standard for the waterproof performance of waterproof plug is based onIPDegree of protection. See waterproof plug waterproof performance, mainly depends onIPXYThe second digit after theY, P2The number of bits is from0reacheightThe highest level iseightIt is the degree of protection to prevent water from entering the equipment shell in various forms;Therefore, the highest protection level of the connector isIP68

Generally used in outdoor waterproof plug, waterproof level to achieveIP67 .If it's near the water, such as on a boat or by the sea, it's best to get thereIP68

Today we want to do waterproof test of this plug, waterproof level needs to reachIP67 。 It can be seen from the product picture that this product is a whole made of rubber. The stainless steel plug and the charging head are also treated with waterproof tape. What we want to detect is whether there is the possibility of water leakage at these joints.


(air tightness test product: charging plug)

For the waterproof test of products, we use the pressure attenuation method to test. According to the waterproof grade and characteristics of the product, the test pressure of the product is determined, and the specific test pressure is filled into the interior of the product or the surface of the test mold. By sensing the change of air pressure inside the product, the sensor can judge whether the product has leakage. Because the test medium is compressed air, there is no harm to the test product. At present, there are many air tightness detectors in the market, and the quality and price are also uneven. To judge whether an air tightness detector is good or bad, it mainly depends on the accuracy and stability of the test. Hiris air tightness detector has strong stability and provides free trial service. Good after-sales service, provide service in Guangdong Provincetwenty-fourHours of after-sales service, our air tightness detector has been used in thousands of factories, to protect the quality of customers' products.

Because the product has no inflation port, a test mold is made according to the shape of the product. The test product is placed inside the mold and the test pressure is charged into the mold. Because the space of the mold is certain and the pressure is certain, if there is no leakage in the test product, the air pressure will be on the surface of the test product and inside the gap of the mold, and the air pressure will remain unchanged. If there is a leak in the test product, the air pressure in the mold will leak into the product, and the air pressure in the mold will drop. The sensor inside the air tightness detector can quickly and sensitively capture the change of air pressure inside the mold, and the call data is displayed on the display screen. The airtightness testing equipment of Harris is equipped with high-precision sensors with the accuracy of0.2%FS.The results are more objective and accurate.

(charging plug air tightness test mold)

Generally, the air tightness testing equipment is composed of air tightness tester, test tooling and mold, which need to be customized according to the customer's test products. In general, the time for designing and producing test tooling is15God. The figure below shows us the complete air tightness test equipment for the charging plug. Set the test parameters, connect the instrument and tooling to the source and power, and then start the waterproof test on the assembly line.


(charging plug air tightness testing equipment)

The air tightness tester configured for the customer this time is HarrisHPDevelopment SeriesAir tightness detector

Pioneer series is a very mature and stable instrument with convenient operation interface and economic and practical cost performance, which has won high praise in the market. The function and performance parameters of the instrument can meet the needs of most customers.

High sensitivity pressure sensing and regulating unit, with advanced differential pressure software algorithm, the minimum resolution can reach1 pa, the algorithm has obtained the national patent.

The patented technology of "IVT pneumatic sealing valve island" independently developed by Harris greatly improves the test accuracy, ensures the stability of the instrument, and greatly improves the inflation speed.

Full touch intelligent operating system, graphical UI design based on detection process, simple and clear operation interface, easy to teach and learn.

There are positive and negative pressure optionsThere are 8 Basic test modes, which can be combined by single choice.

Multiple communication interfaces: built in RS232 serial port, RJ45 network port, USB communication interface, LTP external I / O control port, supporting a variety of communication protocols.

It has more than 100 groups of subroutines. Each group of subroutines can be programmed independently, selected and combined to meet various complex test requirements.

A variety of pressure regulating components and ranges are available. Wide range of air pressure (- 80kPa & amp; mdash; 1000kPa) optional. Selecting electronic pressure regulating valve can realize multi group pressure sequence test.

Ultra high stability, and ease of use, after a rigorous test of the market.

A variety of accessories are available, including inflatable bypass, quick connector and standard leak. At the same time, the instrument supports third-party calibration and can issue calibration report.

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