Grounding cable, electronic products factory Song Chong-wook (certified), Shaoguan terminal lines from Dongguan Shijie Xu Song Chong electronic products factory provided. Dongguan Shijie Xu Song Chong Electronic Products Factory (chuangxs.1688.com) is specialized in "terminal, plastic shell connectors, cables, connectors," the enterprise, the company of "honesty, hard service" concept, for You provide the most quality products and services. Welcome to inquire! Contact: Mr. Hu. Comprehensive consideration of the low-voltage equipment working environment, the impact of insulation coordination to the following factors: the rated voltage-dependent; rated insulation voltage; by the device during operation overvoltage rated impulse voltage is determined. Another environmental conditions such as: temperature, humidity, solar radiation, heating, ventilation, dust and moisture; other factors such as: pollution, material properties (tracking index CTI), voltage action time, frequency, altitude (atmospheric pressure), electric field conditions, a uniform electric field; non-uniform electric field. Since the solid insulating material defects (e.g. impurities, air gap) exists, although far less than the breakdown voltage level, but still partial discharge is generated due to the expense of its life. Damage the solid insulation material has a process of accumulation in the course of its life, due to unrecoverable this process will eventually lead to the breakdown or aging loss of efficacy. In the high frequency voltage is applied, the material dielectric loss and partial discharge will reduce the life intensifies. Sanmen Bay appliances and other electronics engineers recognized simply by increasing the thickness of the insulation structure terminals in order to obtain long-term ability to withstand voltage is inappropriate, only to obtain satisfactory results only through rational design. Specific to the design method must determine the minimum clearances; minimum creepage distance; or add some auxiliary measures: a coating of insulating material; installation of insulating sleeve or insulating liner; Shop lining insulating film; pollution and moisture, etc. Summing up. above, used in low-voltage electrical equipment from the electrical strength of the insulating material with terminals insulated electrical strength far greater than air, so when terminals insulation clearances were designed to meet the requirements, should adopt creepage distance method, i.e., to increase the solid insulation between the two conductors isolation. There is no reliable terminals, there is no reliable system works. Failure and reliability are the two aspects of the corresponding also interconnected in a contradiction. Through the terminal reliability screening found a variety of failure modes and failure mechanisms can lead to a lot of lessons and remove all hidden terminal lines 4p, to improve the design, technology, testing and use to provide a scientific basis, it is also revising and developing technology Terminals an important basis for the conditions. Failure to find preventive measures implemented by the failure of the conversion into a reliable, is the ultimate goal of failure analysis. wUK terminals and applications in order to facilitate wire connection, it is actually some sealed inside plastic insulation sheet metal wire can be inserted into the hole on both ends t8 cable, there are screws for fastening or loosening, such as two wires, sometimes you need to connect, sometimes you need to disconnect, this matter can use the terminal to connect them, and you can disconnect at any time, without having to put them together or intertwined welding cable, very convenient. And for a lot of wire interconnection in the power industry have a special terminal block, terminal boxes, above all WUK terminals, single and double, current, voltage, and ordinary, and so can be broken. Certain compression bonded area is to ensure reliable contact, and can ensure a sufficient current. Hole separating force refers to the state of mating contacts separate from rest into force movements are used to characterize the pin and socket contacts. Experimental results show that: the single-hole separation force is too small, it may cause a short break in the signal when subject to vibration, shock loads. Measured with a single hole separating force method to check the reliability of the contact resistance measured effective than contact. Examination revealed that the separation of the ultra poor hole jack, measuring the contact resistance is often still qualified. To this end, in addition to the production plant to be developed by a new generation of flexible and reliable contact mating contact members, should not be used for key model with automatic insertion force testing machine multi-point measurements together to deal with 100% finished by a single point inspection hole separation force, and prevent individual jack off instant relaxation resulting signal.