What are the safety requirements for rectangular connectors?

I. What are the safety requirements for rectangular connectors? ①Insulation resistance Insulation resistance refers to the resistance value presented by applying voltage to the insulating part of the aviation plug, thereby generating leakage current within or on the surface of the insulating part. It is mainly affected by the insulation material, temperature, humidity, dirt and other factors. The insulation resistance value provided on the sample of aviation plug is generally the index value under standard atmospheric conditions, under certain environmental conditions, the insulation resistance value will have no need to degree of decline. In addition, we should pay attention to the test voltage value of insulation resistance. According to the insulation resistance (MΩ) = voltage added to the insulator (V) / leakage current (μA) apply a different voltage, there is no use of the results. In the test of aviation plug, the applied voltage is generally 10V, 100V, 500V three grades. The withstand voltage is the critical voltage between the mutual insulating parts of the contact pairs or between the insulating parts and the ground that can withstand a higher voltage than the rated voltage within a specified period of time without generating a breakdown phenomenon. It is mainly affected by the contact pair spacing and creepage distance and geometry, insulator materials, as well as ambient temperature and humidity, atmospheric pressure. ③ Combustibility of any aviation plug in the work are inseparable from the current, which exists the risk of fire. Therefore, the aviation plug is not only required to prevent ignition, but also required in the event of ignition and fire, can be self-extinguishing in a short period of time. In the selection should pay attention to the choice of flame retardant, self-extinguishing insulating materials used in the electrical aviation plug.

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