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 the terminals insulated to clearances were mainly the terminal design agency, should be used to climb electrical distance method Terminal sales, an increase of solid insulation between two conductive isolation. Introduction Terminals Terminal increasingly widely applied to various fields, including signal terminals, power terminals, connecting terminals, etc., is the circuit connector. Terminal is connected to the battery and the external conductor member. In electrical engineering, multi-fingered wiring terminal terminal terminal, also known as terminals, Category single, double, socket terminal suppliers, hooks, etc., from the material points, copper silver, copper zinc, copper, aluminum, iron, etc. . Terminal sales | Song Chong Xu electronic products factory (certified) | Zhaoqing terminal by Dongguan Shijie Xu Song Chong electronic products factory provided. Dongguan Shijie Xu Song Chong Electronic Products Factory (chuangxs.1688.com) is Dongguan, connectors leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Song Chong-wook in electronic products plant leadership with the staff warmly welcome all inquiries negotiations to create electronic products factory Song Chong-wook a better future.