Analysis and Solution of Common Faults in Electrical Connectors

For some common faults, we also need to do corresponding analysis work and come up with solutions:

① At present, the high working temperature of connectors is 200 ℃ (except for a few high-temperature special connectors), and the low temperature is -65 ℃. Due to the heat generated by the current at the contact point during the operation of the connector, resulting in a temperature rise, it is generally believed that the working temperature should be equal to the sum of the ambient temperature and the contact temperature rise.In certain specifications, the allowable high temperature for connectors under rated operating current is clearly specified.

② The invasion of moisture resistance can affect the insulation performance of the connection and corrode metal parts.

③ When salt spray resistant connectors work in environments containing moisture and salt, the surface treatment layer of their metal structural components and contact parts may produce electrochemical corrosion, which affects the physical and electrical performance of the connectors.

④ Vibration and shock resistance are important properties of electrical connectors, especially in special application environments such as aviation and aerospace, railway and road transportation. They are important indicators for testing the robustness of the mechanical structure and electrical contact reliability of electrical connectors.

⑤ According to usage requirements, other environmental properties of electrical connectors include sealing (air leakage, liquid pressure), liquid immersion (resistance to specific liquids), low air pressure, etc.