Poor connector quality can lead to undesirable phenomena

Regardless of what companies, what products, as long as the quality of the production time is not satisfactory, then, in the process of using what kind of bad phenomenon will be triggered, then our connector is the same, the connector generally produces which several kinds of bad phenomena it? 1. Resistance Rco's failure to analyze: Resistance Rco is the connector after the insertion of the metal parts of the overlap part of the resistance, if the Rco does not normal increase will lead to The temperature rises, which in turn leads to the middle part of the connector to start a fire. Crimp resistance Rcr is mainly related to the crimping quality and crimping process, you can judge the quality of crimping through the compression ratio and crimping profile. Good crimping requires a tight profile can not leave a gap, while the shape of the regular. For the commonly used 4mm2 cable crimping, crimping contact resistance, the standard IEC2742/05 also put forward less than 0.2mΩ requirements, and IEC60352-2 is required to crimp the end of the pull-out force should be greater than 310N. 2. sealing performance caused by the failure analysis: photovoltaic module connectors due to the outdoor, so for the sealing performance has strict requirements, for example, some of the connectors have reached IP65 and IP65, and some of the connectors have reached IP65 and IP65. For example, some connectors have reached IP65 and IP68 protection level. As the connector is connected with the cable, so when it comes to sealing, the choice of cable becomes very important. Generally different connector types will correspond to different cable outer diameters, the purpose of which is to ensure sealing performance. In order to verify the matching of the cables, after the connectors have been assembled, they are subjected to relevant tests, such as IP tests, wet insulation tests, voltage tests, and so on. Another situation is that the connector is very difficult to ensure its sealing, therefore, in outdoor applications may be into the water into the dust, thus destroying the insulation properties, which led to a fire.3. Insulation materials caused by the failure analysis: in the manufacturing, the choice of insulation materials directly determines the quality of the connector, good connectors need to choose the right insulation materials, and whether it is appropriate is mainly through the connector requirements to use to determine. Determined. For example, the material's weather resistance, heat resistance, flame retardant properties, mechanical properties, insulation properties, etc., and photovoltaic modules in the connector insulation material selection is the result of comprehensive consideration of these properties. There are some manufacturers in order to reduce the cost of product materials and the use of recycled materials to production and manufacturing, but will increase the probability of failure of the product at the end of the use, so the choice of appropriate materials in order to reduce the probability of product misfire at a higher temperature rise. Therefore, customers in the selection of the supply of connector manufacturers should be to eliminate the use of recycled materials to manufacturing.

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