terminal block

Terminal is used to achieve a accessories electrical connection, the connector into the scope of the industry. With the increasingly high level of industrial automation and industrial vga cable requirements become more stringent, precise, terminal blocks dosage gradually rise. With the development of the electronics industry, the use of the terminal more and more, and more and more types. Currently the most widely used in addition to the Mini HDMI cable terminal, there are hardware terminals, screw terminals, spring terminals, etc., in the power industry have a special terminal block, terminal box, above all terminals, monolayer, bilayer , current, voltage, ordinary, and the like can be broken.

Technical requirements for barrier terminal block

barrier terminal block mainly refers to the transformer neutral or neutral (N line) to ground. N lines must be insulated copper wire. Supplementary equipotential terminals exist in the distribution of equipotential terminals are generally in the cabinet. It must be noted that the terminal is not exposed; not with other grounding system, such as the DC grounding, shielding grounded, anti-static grounding blend; are not connected with the PE line. 1 To ensure the safety of persons and equipment, electrical hdmi to dvi adapter  equipment shall be in addition to protective earth ground work required to achieve or protective grounding requirements, should not be used for other purposes. 2 different uses and different voltage electrical equipment, in addition there are special requirements, in general, you should use a general grounding, equipotential connection according to the requirements, should the building metal structures, metal pipes (metal transporting flammable substance excluding pipelines) and total body connected to ground. 3 total artificial grounding should not be located in the building, the total grounding grounding resistance should meet the minimum earth ground resistance requirements.
4.barrier terminal block ground with special 24 port patch panel  requirements, such as weak systems, computer systems and medium voltage systems, directly grounded neutral point, or when the low resistance grounding, according to relevant special regulations. Technical requirements for grounding device
1 variable (distributed) power of the grounding device
① change (with) the electrical grounding of the grounding device should be laid level. Its body is made of a length of the grounding 2.5m, diameter or thickness of not less than 12mm angle bar is not less than 4mm or 4mm thickness not less than steel, and with cross-section of not less than 25mm × 4mm flat connected to a closed loop, the outer edge of each To make curved corner. ② body should be buried in the ground becomes (with) the  hdmi wall plate wall, a distance not less than 3m, buried deep in the ground grid should exceed the local permafrost layer thickness, minimum burial depth of not less than 0.6m. ③ change (with) the main power transformer their work and protective earth ground, are connected to the network and artificial ground. ④ lightning rod (wire) should be established independent of the grounding device. 2. Protective grounding flammable and explosive electrical equipment ① flammable and explosive electrical equipment, machinery, metal pipes and metal structure of the building should be grounded and laying the pipe joints jumper.
② barrier terminal block at 1kV or less neutral grounding line, when the line over-current protection fuse, its action to protect the safety factor of not less than 4 devices for the circuit breaker, a safety factor of not less than action 2. ③ grounding lines and grounding connection point not less than 2, and is connected to the building grounding at both ends, respectively. ④ To prevent sparks caused by accident when measuring ground resistance, should be measured in the absence ** dangerous places, or to measure the lead with a side button to place outside explosive places.
3 DC grounding equipment due to the role of the DC current, severe corrosion of the metal, the contact resistance increases, so when installed on a DC line grounding devices must seriously consider the following measures ① DC grounding devices, can not use natural grounding As PE lines or duplicate grounded grounding and ground lines, and can not be connected with the natural grounding. Artificial grounding ② DC system, the thickness of not less than 5mm, and to check erosion regularly. 4 handheld, portable hand-held electrical equipment grounding, electrical grounding the mobile device should use a soft copper wire having a cross section of not less than 1.5mm2, to ensure sufficient mechanical strength. Ground wire connected to the electrical equipment or grounding should be used bolts or special fixtures to ensure good contact and move in line with the role of short-circuit current, the thermal stability requirements.

Common applications of the material WISDOM terminal block

Terminal blocks are common in the industrial production of connector products, in the course of a stable signal can be transmitted with the current to the desired device, but there are thousands of products on the market on the terminal type, its application materials are not same. Terminals on research and development as a professional manufacturer, will lead you to explore the circumstances behind the production of the terminals. Terminal conventional optical fiber cable  production materials and characteristics are summarized as follows:
 Terminals and connectors, terminal block bus diversion body is used copper (H65) as a base material, excellent conductivity of copper silver public inferior, since the wires are connected to terminals copper material, the same The material does not produce the same coefficient of expansion loose connection problems. To apply a different product requirements shall choose different materials depending on the application a thermosetting plastic EP has good geometric stability, water is small, compared to the tracking index. Flame retardant very, at elevated temperatures, superior grade thermoplastics stable, but poor toughness;
 2, terminal block of glass fiber reinforced nylon PA-F Nylon fiber glass has a strong rigidity and hardness at higher temperatures compared to the use of non-reinforced nylon. It also applies to the hdmi splitter  over-voltage protection fields. Reinforced nylon to absorb less water than non-reinforced nylon. Except for the above difference, the same as other characteristics of the two materials. In accordance with UL94, the flame retardant nylon fiber reinforced grade HB to V0, where V0 dyed black color type material in most cases; 3, thermoplastic polycarbonates PC
 Such as high hardness, impact toughness, transparency, dimensional stability, good insulation properties and good thermal stability. Particularly suitable for transparent polycarbonate cover or logo resistant polycarbonate material stability mineral acid, saturated fat carbohydrates, petrol, fats and oils erosion. Polycarbonate solvent, benzene = lye, acetone  12 port patch panel and ammonia tolerance to be worse. May form the contact stresses and cracks certain chemical reagents; 4, PB PBT thermoplastic polyester having a good geometric stability, using a material having high strength and heat resistance of glass fiber reinforced. But also has excellent flame resistance and reliability of the electrical resistance 5, the quality of the combined thermoplastic terminals Nylon 6.6 has a high dielectric housing requirements, most made by thermoplastic nylon 6.6, the plastic can economically by injection molding processing, and environmentally friendly, beneficial recycling.