How to choose LED display waterproof connector

Choose a high-quality LED waterproof connector, generally because of the following aspects.

First, first meet the relevant electrical, installation, connection, insulation, protection and other technical standards, this is the basis of choice.

Second, you should not only look at the standards, but should go beyond the standards and focus on the actual application. Because some of the standards selected for LED industry connector design and production are actually borrowed from other industries, because the industry application time is short, many terms do not meet and meet the rapid changes of the LED industry, such as aging resistant materials. The assessment is only general in line with the use of outdoor projects, but how to define it is to look at the UL yellow card or the test. The life of the outdoor project is based on the commercial contract of the project manufacturer or the technical use that everyone can recognize. Life expectancy, which directly affects the selection and design of product materials, is also the reason for the variety of LED connector materials, in addition, the requirements of individual standard terms are relatively low, that is, the threshold of quality is very low, resulting in Various home workshops can be produced at will. Some test standards are tested under the "standard static environment". After an engineering accident, the connector is retested and found to be qualified according to the standard. Why, because of laboratory testing Both standard terms and standard environments have been chosen, and the environment at the application site varies widely. For example, the cable fixing head of the M16 at the end of the connector has the requirements for cable gripping force and anti-torque. The standard only says that the tensile force reaches 80N and the anti-torque value is greater than 0.45Nm. However, the connector may be artificially pulled and twisted in actual use. Wrap, so the actual data may be far from the standard value, and this force is maintained between the two connectors for a long time. After a long period of outdoor use, the connector is often not waterproof or the contact is broken and the circuit is broken.

Third, look at the structural principle design, structural design is very important. If the principle design of waterproofing and connection is more advanced, it will be superior. If the outdated structural principle is chosen, even if the quality control in the manufacturing process is good, it is often reliable and outdoor long-term weathering. Sex is not as reliable as creating a new generation of products.

Fourth, look at the tolerance accuracy of the assembly. Because the connector often involves connection, waterproof, male and female contact fit, etc., it requires high precision requirements for the size. The high-end and low-end connectors are almost the same in appearance and structure at first glance, but they are not as high or low. How do you spend some time, carefully measuring the mating dimensions of multiple pairs of connectors with a caliper, you will find that the poor quality of the fit size varies greatly, that is, the stability of the connection is not guaranteed, and the consistency of the batch products is poor.

Fifth, look at the production quality control system of the connector factory. It is easy for the connector company to provide a pair of connectors for testing. It can also get good test scores. But when you get to the factory, you will find that there is no inspection standard for raw materials, there is no necessary testing link for finished products, and repair and inspection of non-conforming products. There are no procedures, etc., which affect the quality of the product, that is to say, only the percentage of the lily, not thousands of points, ten thousand yuan qualified. In the long run, good quality system control is even the most important reference factor for lamp manufacturers to choose connector manufacturers, otherwise it will be “small due to small loss”. In general, enterprises with large production scale and technical testing equipment have higher quality control and stability. For example, companies such as Quick-Contact, which have the qualification of “National Outdoor Connector Testing and Testing Center”, value product quality.

Attachment: LED waterproof connector classification, characteristics and market area distribution

Waterproof connectors can be generally classified into two types: "encapsulated type" and "post-mounted type" from the product structure design. As the name implies, the “encapsulation” connector means that the cable and connector have been injection molded before the connector factory leaves the factory. The cable length and connector PIN number are determined by the end customer project and cannot be changed. This type of connector is characterized by a simple structure, the number of PINs varies from 2-12 PIN, and the total cost is low. However, the terminal customer must accurately determine the parameters with the connector manufacturer, and the inventory pre-production cannot be realized. Generally, the LED lamps and power supply enterprises select More. “Post-mounted” connector means that the connector is shipped from the factory to the customer without any cable connectors. The customer on-site construction personnel can cut the cable length and install the connector according to the engineering requirements through simple tools. Generally, the mating surface of the male and female connectors is the same as the "encapsulation". The main difference is that after the cable is inserted into the connector, a nut is provided at the tail end for screw fastening and waterproofing. This type of connector is characterized by relatively complicated structure, but the flexibility of on-site installation is high, especially suitable for on-site emergency connectors, etc., waterproof and reliable, connector manufacturers can mass-stock mass production, sub-distribution, general LED display enterprise More choices.