插头与电缆的选型与设计(国外英文资料).doc

插头与电缆的选型与设计(国外英文资料) Plug and cable are common devices and one of the most vulnerable problems. As we tend to ignore the closest people, the hidden dangers and importance of sockets and cables are often overlooked. Imagine, when the machine transport, in the case where the wall with cable, cable activity is directly affected by the force of the cable socket, bump injury prone is ring cable; In the work of power on, the cable is running pulsating voltage or current, it is also a good antenna, which may introduce interference or external radiation interference; The cable itself has inductance, and the high frequency signal produces radiation, coupling and reflection (not matching the front and rear impedance); There is a parasitic capacitance between the wires in the multicore cable, which results in crosstalk; How to deal with the shielding cable, how to deal with the two ends grounding, single ended earthing or double ended earthing or multipoint grounding?; In order to realize the anti-interference, the cable which transmits the weak signal is twisted and prevented; Where the joint is exposed, the metal will introduce static electricity; In case of high voltage contact, the cable sheath will be subjected to high voltage, and its insulation and compressive strength is also a guarantee of safety; The square of the current on the cable and the product of the cable impedance will become heat, heat dissipation and heating, and whether it will cause an accident. After a long fever, the skin will age and lead to poor insulation; In the coastal areas, the metal pin of the joint tends to corrode; The metal material of the plug pin and the material of the metal of the cable are different, and the contact resistance in the electric contact will cause local heating, and the contact is bad, and the contact resistance will be raised continuously, and the electromigration will also become a hidden danger; The plug and cable are connected with moving parts, which sustain or break