Power system
Wire and hdmi cable products used in the power system mainly has the overhead bare wire, bus (bus), the power cables (plastic cable, oil paper power cable (basically replace the plastic power cables), rubber set of cable, aerial insulated cables), branch cable (instead of part of the bus), electric magnetic line with electrical equipment and power equipment wire and cable etc..
Information transmission system
For information transmission system wire and cable are mainly telephone cable, TV cable, electronic cable, radio frequency cable, fiber optic micro hdmi cable , data cable, electromagnetic wire, electric power communication or other composite cable.
Mechanical instrumentation system in addition to this part of the overhead bare wires outside almost all other products are applied, but the main power cable, electromagnetic wire, data cable, instrumentation cables
rca video cable
2015年1月28日星期三
2015年1月24日星期六
Optional elements of cable
Wire and plug in terminal block as the main carrier of power transmission, are widely used in electrical equipment, lighting, household appliances and other lines, its quality directly affects the quality of the project and the life and property safety of consumers. There are a lot of wire varieties on the market, want to use the appropriate wire according to the power load your.
On the market sell wire some cheap and some more expensive, some people often but to relatively cheap, cheap, wires, often have many did not reach the performance that he shows, there may bring many security hidden trouble to yourself. Production technology content of wire is not too high, the raw material is not much difference, if cheap too much, or cut corners, or the number of not giving enough. How to identify it. I give you several methods for easier identification:
1, to look at the packaging, GB wires tend to do relatively well, neat, hand up have a sense of quality.
2, to open the package to see the inside of the wire, the wire GB 1.5 - -6 square wire requirement is thick skinned (insulation thickness) is 0.7mm, too thick is non-standard, corresponding to his inner core is sure enough, line skin you can force pull, not easy to tear is general is the national standard of
3, with the fire, extinguished within 5S after leaving, have certain flame retardant function for GB line.
4, look at the inner core, the inner core material (copper) brightness higher copper is better, and photometric mini hdmi cable uniform, shiny, no sense of hierarchy. The national standard requirements within the core must use oxygen free copper. Non standard such as black rod copper, there may be hidden dangers of accidents.
5, the thickness of inner core countries have certain requirements, but not very strict. But not a lot of mistakes, only a very small a little bit error generally with the eyes of the.
6, length, no compulsory must play meters, but there are many manufacturers also played meters, not necessarily GB dozen meters, but the General GB generally not dozen meters. Non standard dozen meters that is only a kind of means.
7, the provisions of the state on the wires must play a certain identity, the maximum not more than 500mm have identified the same next play out, above the general product trademark, factory name, the implementation of standards
On the market sell wire some cheap and some more expensive, some people often but to relatively cheap, cheap, wires, often have many did not reach the performance that he shows, there may bring many security hidden trouble to yourself. Production technology content of wire is not too high, the raw material is not much difference, if cheap too much, or cut corners, or the number of not giving enough. How to identify it. I give you several methods for easier identification:
1, to look at the packaging, GB wires tend to do relatively well, neat, hand up have a sense of quality.
2, to open the package to see the inside of the wire, the wire GB 1.5 - -6 square wire requirement is thick skinned (insulation thickness) is 0.7mm, too thick is non-standard, corresponding to his inner core is sure enough, line skin you can force pull, not easy to tear is general is the national standard of
3, with the fire, extinguished within 5S after leaving, have certain flame retardant function for GB line.
4, look at the inner core, the inner core material (copper) brightness higher copper is better, and photometric mini hdmi cable uniform, shiny, no sense of hierarchy. The national standard requirements within the core must use oxygen free copper. Non standard such as black rod copper, there may be hidden dangers of accidents.
5, the thickness of inner core countries have certain requirements, but not very strict. But not a lot of mistakes, only a very small a little bit error generally with the eyes of the.
6, length, no compulsory must play meters, but there are many manufacturers also played meters, not necessarily GB dozen meters, but the General GB generally not dozen meters. Non standard dozen meters that is only a kind of means.
7, the provisions of the state on the wires must play a certain identity, the maximum not more than 500mm have identified the same next play out, above the general product trademark, factory name, the implementation of standards
2015年1月20日星期二
Name of product structure and material of cable
(1) the wire: the most basic essential main component products are current or electromagnetic wave information transmission function.
Main material: the wires are electrically conductive wire core referred to, made by conductive properties of copper, aluminum, copper clad steel, copper clad aluminum and other non-ferrous metal with excellent, optical fiber as the wire.
A bare copper wire, tinned wire; single branch, strand; twisted tinning line.
(2) the insulating layer is coated components: plays a role in wire electrical insulation periphery. That can ensure the transmission of current or electromagnetic waves, light waves travel along the wires and not only flow to the outside, the conductor has the potential (i.e. potential on the formation of the surrounding objects, namely the difference voltage) can be isolated, i.e., both to ensure the normal transmission function of the wire, but also to ensure that the external object and personal safety. Conductor and the insulating layer is composed of terminal block products (except the bare wire) two basic components must have. Main material: PVC, PE, XLPE, PP, F, polypropylene fluorine plastics, rubber, paper, mica tape
(3) filling structure: a lot of wire and cable products are the multi core, these insulating wire core or lines on the cable (or packet multiple cable), a shape is not round, two is an insulating cable core has the very big space, and must join the filling structure in the cable, filling knot the structure is to make the cable outer diameter relative round in favor of bag, extrusion sheath. Main material: PP rope
(4): is a kind of shielding barrier terminal block products in the field and outside electromagnetic isolation components; cable products from different lines in its internal (or group) to also need mutual isolation between. The shielding layer can be said to be an "electromagnetic screen". The conductor shielding of high voltage cables and insulation shielding to electric field distribution homogenization. Main material: bare copper wire, copper clad steel wire, tinned copper wire
(5) layer of protection: when the electric wire and cable products running in different environments, must have on the overall product, especially for the insulating layer protective component, which is the protective layer.
Because the requirements of insulating material has excellent variety of electrical insulation properties, must demand extremely high purity and impurity content of materials; often fail to take into account their on the outside of the protection ability, so for the outside world (i.e., installation, application occasions and in various mechanical force) bearing or resistance, resistance to atmospheric environment, chemical resistance or oil, to prevent biological invasion, and reduce the fire hazards must be composed of various protective layer structure to bear. Main materials: PVC, PE, rubber, aluminum, steel strip
(6) the tensile element: the typical structure is a steel core aluminum stranded wire, fiber optic cable and cable etc.. In a word, the development of special fine, soft, also requires repeated bending, distorting the use of products, the tensile element plays a major role in.
Main material: the wires are electrically conductive wire core referred to, made by conductive properties of copper, aluminum, copper clad steel, copper clad aluminum and other non-ferrous metal with excellent, optical fiber as the wire.
A bare copper wire, tinned wire; single branch, strand; twisted tinning line.
(2) the insulating layer is coated components: plays a role in wire electrical insulation periphery. That can ensure the transmission of current or electromagnetic waves, light waves travel along the wires and not only flow to the outside, the conductor has the potential (i.e. potential on the formation of the surrounding objects, namely the difference voltage) can be isolated, i.e., both to ensure the normal transmission function of the wire, but also to ensure that the external object and personal safety. Conductor and the insulating layer is composed of terminal block products (except the bare wire) two basic components must have. Main material: PVC, PE, XLPE, PP, F, polypropylene fluorine plastics, rubber, paper, mica tape
(3) filling structure: a lot of wire and cable products are the multi core, these insulating wire core or lines on the cable (or packet multiple cable), a shape is not round, two is an insulating cable core has the very big space, and must join the filling structure in the cable, filling knot the structure is to make the cable outer diameter relative round in favor of bag, extrusion sheath. Main material: PP rope
(4): is a kind of shielding barrier terminal block products in the field and outside electromagnetic isolation components; cable products from different lines in its internal (or group) to also need mutual isolation between. The shielding layer can be said to be an "electromagnetic screen". The conductor shielding of high voltage cables and insulation shielding to electric field distribution homogenization. Main material: bare copper wire, copper clad steel wire, tinned copper wire
(5) layer of protection: when the electric wire and cable products running in different environments, must have on the overall product, especially for the insulating layer protective component, which is the protective layer.
Because the requirements of insulating material has excellent variety of electrical insulation properties, must demand extremely high purity and impurity content of materials; often fail to take into account their on the outside of the protection ability, so for the outside world (i.e., installation, application occasions and in various mechanical force) bearing or resistance, resistance to atmospheric environment, chemical resistance or oil, to prevent biological invasion, and reduce the fire hazards must be composed of various protective layer structure to bear. Main materials: PVC, PE, rubber, aluminum, steel strip
(6) the tensile element: the typical structure is a steel core aluminum stranded wire, fiber optic cable and cable etc.. In a word, the development of special fine, soft, also requires repeated bending, distorting the use of products, the tensile element plays a major role in.
2015年1月16日星期五
Wall type terminal block
With screw connection cable technology, insulating materials for PA66 (flammability rating: UL94, V-0), using high-quality connectors highly conductive metallic material. H-type wall-type terminals can be mounted side by side on the thickness of 1mm to 10mm and other Barrier terminal block panels, panel thickness adjustment distance can automatically compensate any terminal block consisting of poles, and can be used to increase the air gap separating plate and creepage distance. No tools can be wall-type terminals securely mounted in a rectangular hole on the panel aside, the installation is extremely convenient. H-type terminal block wall is widely used in some of the solutions that need to pass through the wall of the occasion: Power, filters, electrical control cabinets and other electronic devices. Good plug in terminal block insulation properties, high degree of protection, users only need to work directly in the external wiring, eliminating a lot of unnecessary wiring steps. Insulation material WUK series terminal with modified nylon (PA66), which can be accessed 4mm2 wire voltage of 800V electrical current is 41A connectivity products
2015年1月12日星期一
Terminals requirements
Mechanical structural safety requirements terminals in terms of chemistry and structural materials and moving parts to ensure the safety of live, such as shell edges, hardware aspects of glitches, and various parts of the connection strength, even stable under electrical terminal block exercise conditions sex, above all in the mechanical structure of the power industry requirements for terminals.
2, enclosure protection requirements mainly JB / T 9568-2000 provides for protection class, it is mainly divided into two types, one is solid foreign protection level, one is water damage caused to equipment and products.
3, insulation coordination requirements are mainly based on the materials used, the working voltage and environmental pollution levels, come together to select clearances and creepage distances, thereby protecting the safety of staff and products work, but also make the product does not occur in the over-voltage insulation damage .
4, the tracking index requirement for the product in the course of the surface of the solid insulating materials in the electric field and an electrolyte to form a conductive path, so that the insulating properties of the insulating material housing decline, affecting the safety of the product. If insulation voltage level at the same conditions, tracking index is high, the product creepage distance can be reduced, if the product enters power sector development in this regard, please pay full attention.
5, the thermoplastic material in the work requirements of the deformation, which is mainly of the temperature and the contact resistance of the terminals in the work, the high temperature which causes the deformation of the housing becomes soft, so that the electrical short-circuit, resulting in a serious accident, so the carrier terminals Select the material flow components was very important.
6, electric shock requirements, the structural aspects of the operating element should not be charged, terminal and internal PCB Spring Terminal Block connections should be accessible to this area mainly for screw torque and reliability requirements, should prevent the screw terminals can be touched, Loose wires accidentally shorted. Such as the ground terminal requirements: ground resistance class security products should not exceed 0.5Ω.
2, enclosure protection requirements mainly JB / T 9568-2000 provides for protection class, it is mainly divided into two types, one is solid foreign protection level, one is water damage caused to equipment and products.
3, insulation coordination requirements are mainly based on the materials used, the working voltage and environmental pollution levels, come together to select clearances and creepage distances, thereby protecting the safety of staff and products work, but also make the product does not occur in the over-voltage insulation damage .
4, the tracking index requirement for the product in the course of the surface of the solid insulating materials in the electric field and an electrolyte to form a conductive path, so that the insulating properties of the insulating material housing decline, affecting the safety of the product. If insulation voltage level at the same conditions, tracking index is high, the product creepage distance can be reduced, if the product enters power sector development in this regard, please pay full attention.
5, the thermoplastic material in the work requirements of the deformation, which is mainly of the temperature and the contact resistance of the terminals in the work, the high temperature which causes the deformation of the housing becomes soft, so that the electrical short-circuit, resulting in a serious accident, so the carrier terminals Select the material flow components was very important.
6, electric shock requirements, the structural aspects of the operating element should not be charged, terminal and internal PCB Spring Terminal Block connections should be accessible to this area mainly for screw torque and reliability requirements, should prevent the screw terminals can be touched, Loose wires accidentally shorted. Such as the ground terminal requirements: ground resistance class security products should not exceed 0.5Ω.
2015年1月8日星期四
Terminal blocks labeling method
Same element group, before the number preceded by the letter, if not necessary to distinguish phase, available digital-5N, -2.5, -16 mark.
Same set of components. With a specific electrical wire terminals connected to a sign. The pressing means is the terminal blocks between the conductor and the conductive body of the pressure generated only generate sufficient pressure to ensure a low contact resistance, a good connection is formed, the reliability of the pressing machine is connected directly to the wire impact good or bad. Speaking of screw-type plug in terminal block screws, studs and are important components platen clamping mechanism; screwless terminals for speaking, spring or spring card is an integral part of the compactor. No screw-type spring terminal block ,clamping mechanism is mainly spring, so crucial to the selection of the spring, it is necessary to ensure that there is sufficient contact pressure to ensure that not too much damage to the wire,PCB Spring Terminal Block is more reliable screwless terminals. When the line, you can block or suppress the spring by pushing a screwdriver, into the line, release the spring, the spring tension back pressed firmly to the wire, resulting in sufficient contact pressure, and then strangled with a spring wire cutting edge, so it does not pull out loose or man-made.
Each terminal in the middle of said single element in a natural number incremented sequence number.
Same set of components. With a specific electrical wire terminals connected to a sign. The pressing means is the terminal blocks between the conductor and the conductive body of the pressure generated only generate sufficient pressure to ensure a low contact resistance, a good connection is formed, the reliability of the pressing machine is connected directly to the wire impact good or bad. Speaking of screw-type plug in terminal block screws, studs and are important components platen clamping mechanism; screwless terminals for speaking, spring or spring card is an integral part of the compactor. No screw-type spring terminal block ,clamping mechanism is mainly spring, so crucial to the selection of the spring, it is necessary to ensure that there is sufficient contact pressure to ensure that not too much damage to the wire,PCB Spring Terminal Block is more reliable screwless terminals. When the line, you can block or suppress the spring by pushing a screwdriver, into the line, release the spring, the spring tension back pressed firmly to the wire, resulting in sufficient contact pressure, and then strangled with a spring wire cutting edge, so it does not pull out loose or man-made.
Each terminal in the middle of said single element in a natural number incremented sequence number.
2015年1月4日星期日
Hdmi extension cable features an infrared receiver
hdmi extension cable infrared receiver features:
1 External colloids using electrical terminal block, and add coloring, play better shielding effect.
2 senior internal IC chip imported from Germany and PD, achieve longer distances and more sensitive receiver acceptance angle, to ensure the 21 pin flat scart cable and consistency of performance.
3 fixation using high-temperature aging process, to ensure infrared receiver bracket rust during storage.
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