Audio hdmi cable using certain number of years after the impact

Audio cables transmit signals in the audio play "bridge" role is crucial. The difference between the two audio cable audio cable is not only a good selection of different materials , the principles of the internal structures are not the same , so it is signaling resistance to WISDOM RAC CABLE  external electromagnetic interference performance or performance have some differences.
Audio cable in use should be noted:
After a certain age, the metal terminals and metal oxide cores are likely to occur , which will affect the sound effects and should be replaced in accordance with the actual situation. Speaker wire size should be based on the size of audio power selection . Too small , the signal transmission by stagnation, unable speaker sound good ; too , signal loss increases , the increased burden on the amplifier , speakers equally unable good voice .
Dongguan Xin Sheng professional manufacturer of cables produced by cable, rehearsals line , a signal indicating the line , all kinds of shielded wire harness , flexible flat cable (FFC) and various electronic dedicated a special cable, widely used in displays, home electrical connection field hands, copiers, fax machines , medical equipment , massage, electronic toys , instruments, set-top boxes , motors , electric cars , game WISDOM Network Cabinet  consoles , digital products , automotive, and circuit boards and other products .
Usually in the high-end stereo configuration , the proportion of investment in audio cable 's share is 15 % to 30% is more reasonable. Thus , high-end stereo audio cable to connect the optional high-end , mid-range stereo audio cable to connect the optional mid- and low-grade and low-grade audio optional audio cable , which is to protect the most reasonable sound investment principles to play the best results .
The company has a computer CD-automatic WISDOM fiber optic cable  crimping machine, wire cutting machines, video machines and a number of imported advanced detection equipment.
Try not to bend when in use, and preferably away from power ; under the premise should be short enough , the extra length will increase the signal loss ; function can not be free to mix different lines , such as the inability to replace coaxial cable with audio use , etc. ; product must be connected with the outside fastening . If the connection is bad , it will cause noise is sound , components can lead to serious burn .

The composition and role of hdmi cable

I. What is a connector electronic connector refers to the connection between the units of various electronic components, mainly as a chip on the circuit board, between the board and the board of cabinet electronic signals and transmission links.
Species, the substrate can be divided into the connector, angled connectors, cylindrical connectors, as well as increasingly popular PCMCIA standard connectors, etc. Although the definition of electronic connectors has been less clear, the scope of its coverage, the WISDOM Displayport CABLE general does not include data about the plug or socket outside the high voltage, high current electrical
Or electrical connectors: power switch does not include the large majority of the Japanese people in the field directly in English (Connector) transliteration, sometimes called [continuous piece], in mainland China makes.
With [electric patch] or [electrical connector] including connectors and switches, including the broad term, regardless of electronic appliances. On the application, the majority of electronic connectors are used in computers, telecommunications,
Second aerospace, automotive and various instruments above. Cable connectors for electrical applications for electronic products, as the name suggests it is playing an electronic connection number. Or components, is a kind of multi-merging or assembled products, and WISDOM HDMI CABLE  cover sheet metal, surface plating, precision machining and plastic molding and other key technologies. electronic number as a transport connection, if a problem occurs electronic connectors, electronic components and even cause the entire device
Failure of the whole series of terminals comprises two main parts and plastic, in addition to the terminal part of the selection of materials, the plating and die nondefective affect both the quality of the product, of course, is the same reason. Three plastic parts. Manufacture of electronic cable connector manufacturing from design to finished product, can be divided into two parts, metal and plastic materials used in addition to the metal part of the outside plating and die as the main work; Working modeling aspects are mold design, tooling, injection molding , and then with  WISDOM hdmi wall plate the metal component assembly into electronic connectors. electronic device used to connect electrical products, as the name suggests it plays an electronic signal or component connection is part of a multi-merging or assembly of products, and the cover sheet metal surface electroplating, precision machining and plastic molding and other key technologies. as an electronic signal transmission and connectivity.

High temperature wire and cable mini hdmi cable disposal

High temperature wire and cable is the most important element of the

system resulting in EMC doubt. Therefore , in practice, often found : When

the external device on the cable dragged  WISDOM Terminal BLOCK down, the device can successfully

pass the test , encountered electromagnetic disturbing appearance, as long

as the cable pull down, it will not see the shortcomings in the field of

representation . This is because the cable is an efficient antenna for

receiving and radiation . Further, the distance parallel to the cable

wires in the maximum transmission , and therefore there is a large segment

capacitance and mutual inductance between the wire , which could result in

the onset of crosstalk between signal conductors .
One of the first questions is to dispose of the cable shield of the cable

, but about how shielded cable termination , how shielded cable is useful

series of questions is widely concerned and confused questions. This

section talks about electromagnetic fields on cable annoyance doubt, cable

radiation doubt, doubt crosstalk between the  WISDOM fiber optic cable wires , and these questions

countermeasures.
Effects of electromagnetic fields on a cable
When the cable is in the electromagnetic field will induce a noise voltage

cable. Circumstances and the radiation corresponding to the cable , the

electromagnetic field in the voltage induced on the cable is also divided

into two kinds of common mode and differential mode . Common mode voltage

is the electromagnetic field in the loop between the cable and the earth

attack , differential mode voltage is the electromagnetic field in the

signal line and the signal ground loop consisting of attack. When the

circuit is right or wrong balance circuit , common mode current is

converted to differential mode voltage of the circuit annoyance . Since

the signal line and the loop area formed small signal ground , so the

common-mode noise voltage is still dominated .
( 1 ) electromagnetic field induced voltage on the cable
When the cable is very near to the earth : the electric field component

perpendicular to the ground, the magnetic field component perpendicular to

the wire - when the ground loop induction strongest.
When the cable is very far away from the earth : the electric field

component parallel to the ground, the magnetic field component

perpendicular to the wire - when the ground loop induction strongest.
The electromagnetic field induced in the conductor is the common mode

voltage method , the voltage based  WISDOM Network Cabinet on the system load of the common

conductor or ground reference point , usually in reference to the system

ground plane of reference points . On multi-core cables , which means that

all of the cable conductors are exposed to the same field, the induced

voltage depends on them and see each conductor impedance between points .

Advantages and characteristics of electrical hdmi cable

(1) electrical cable, small size, light weight, electrical cable board was originally designed to replace the wire harness large volume. The total weight and volume of the electrical cable more than the conventional round wire harness to a 70% reduction method. Electrical cable or lining material may also be a method to increase its strength enhanced by the use to obtain additional mechanical stability. For both thin and light, compact complex structure of the device, its design solutions ranging from utp cable  single-sided conductive lines to complex three-dimensional multi-layer assembly.
(2) The electrical connector assembly having a higher reliability and quality. Because the traditional complex systems consisting of a plurality of interconnected hardware in the assembly, component prone dislocation higher rate. Electrical cable reduces interconnect hardware required, such as the commonly used joints, trunk, bottom lines and cables on the traditional electronic packaging, making electrical cable assembly can provide higher reliability and quality.
(3) electrical cable can move, bending, torsion and will not damage the wires, you can comply with different shapes and special package size. Its only limitation is the volume of space. Because the system can withstand even millions of times the dynamic bending, electrical cable can be well suited for continuous or periodic motion movement, to become Mini HDMI cable  part of the final product features. Terminal cable wire 24K gold-plated copper mining plug, effectively ensuring tight junctions, carefree maintain signal transmission; high density shield protection, to prevent outside interference, maintaining signal purity; electrolysis using high purity oxygen-free copper conductors to ensure signal fidelity transmission; the insulating layer is made of high-quality imported PVC material, the new formula was adopted outside the high elastic abrasion acid green PVC material, suitable consumer habits, the RAC CABLE  effective use of time; strong fidelity design anti-jamming capability; signal transmission attenuation Use good effect.
Terminal cable to use: plug into the 3.5mm cable MP3, DVD, TV, CD player, 3.5mm stereo headphone output or, at the other end plugs into the 3.5mm stereo jack input devices can be.

Hdmi cable wire pattern classification and corporate earnings

Wire and cable industry in the country is second only to the automotive industry, the second largest industry in recent years, consumption of copper, 60% -86% of total domestic consumption of copper, wire and cable industry development and changes directly affect the domestic demand for refined copper, and ultimately affect copper prices. Therefore, understanding  WISDOM hdmi wall plate the development of China's wire and cable industry status and characteristics, analyze its future trends and predict future demand for copper to copper futures market is very necessary.
Wires and cables for power transmission and distribution, power transmission, voice, text, images and other information dissemination as well as lighting and other areas of a large class of electrical products, manufacturing a variety of electrical, electronics, instrumentation indispensable foundation equipment, is China's power infrastructure, new smart grid, new energy industry the necessary infrastructure products. Wire and cable industry to occupy the domestic electrical industry output value of 1/4, is China's second largest industry behind automotive industry, China's wire and cable output has surpassed the U.S. as the world's largest wire and cable producer. Upstream of the wire and cable industry, mainly in the supply of raw materials companies, such as copper rods, aluminum and other materials used in the cable business, cable consumer industries more, including power, automobile, machinery manufacturing, rail transportation, aerospace, home appliances and so on.
Wire and cable and corporate earnings pattern classification
According to the National Bureau of Statistics classification, wire and cable industries are electrical machinery and equipment manufacturing. Use classification, the main products include power cables, bare wires, winding wires, electrical equipment, cables, communication cables and fiber optic cables. Wire and cable products according to the voltage level can be divided into low, medium, high voltage, EHV and UHV different voltage levels. Voltage 110KV-1000KV distance between the transmission voltage is called complete energy; in our country, the following is called the voltage 110KV distribution voltage, completion of the power down process and then be allocated to a power function of the user transfer function. Transmission  WISDOM Network Cabinet voltage, the voltage between 110KV-220KV high-voltage, 330KV-750KV transmission voltage level is high pressure, 1000KV negative 660KV AC and DC voltages above grade is called UHV.
Wire and cable industry management organizations to China Electrical Equipment Industrial Association, China Wire and Cable Industry Federation affiliated club, whose main function is to assist the Government in industry self-management, represent and safeguard the legitimate rights and interests and the interests of the wire and cable industry member companies, and organizations to develop wire common commitment of the cable industry line about and so on.
Ordinary cable companies mainly to profit by earning fees. Enterprises in the contract of sale with the customer, generally the purchase price of copper (aluminum) rod plus a percentage of gross profit as sales price. Terms of payment, the customer mainly uses WISDOM Terminal BLOCK  stage payment modes, such as "2-5-2-1" model, that after signing the contract pay a 20% advance payment, pay 50% after product delivery, product installation after completion of the payment of 20% The remaining 10% as a quality guarantee paid after the warranty expires. This reimbursement model requires cable companies have a reasonable cash flow planning, to avoid cash flow problems. In the procurement of copper (aluminum) rod, the purchase price of some use now mode, and some use of copper and aluminum rod copper and aluminum spot price plus processing fee pricing model, the different procurement and sales model allows cable companies in response to fluctuations in raw material prices When will produce different exposures.

Chinese cable industry should let the world know more about

The exact size of the industry should come up with statistics
No small matter, otherwise it will lead to industry misjudged the situation, the impact of industry and enterprise development planning. Over the years, about the size of divergent national wire and cable companies, it seems that anyone can just say a number of years, and we still believe. According to statistics, the total number of national wire and cable companies, from 4200 over 2004, and 7500 than in 2007, and today all of WISDOM Displayport CABLE a sudden rose to 10,000 on hearsay evidence, and that the above-scale enterprises 3820. These figures come from? There are a few friends with their foreign counterparts to talk about it, and they are felt incredible. They believe in doing business statistics when the number should be based on product categories, the number of manufacturing enterprises statistics of certain products, not to be confused with various products manufacturing enterprises, otherwise, is not conducive to master the production of specific products, because of the different categories of products manufacturing processes, materials, devices and users are not the same. Even now there are 10,000 wire and cable business, then all kinds of products which have many companies in the manufacturing, has anyone tell. But some people in the comments national wire and cable industry status quo when, whether it is talking about the low voltage cable or high voltage cable capacity, they all moved out of "10,000 enterprise" as an argument, does not meet the facts, resulting in false misleading moot , ironic. To get a real understanding of Chinese cable industry world scale and technical and economic strength, have to work hard to make detailed statistics, the number of companies to come up with convincing statistics, can not be so confused sloppy down. Should consciously create the conditions now with international standards, China's cable industry is a state-owned, private capital, joint ventures, foreign institutional co-existence of a variety of economic enterprise groups. Except for a few areas, cable companies in most areas of centralized management is not clear, are not effective, even as, despite the free development of enterprise disorder. Some companies want with international standards, expand exports, but with limited business conditions, do nothing. A company's brand, even has a good reputation in a region of the world, but also the corporate brand building successful performance. People often take foreign century-old cable companies compared with domestic cable companies, in fact, there is no need. Well-known cable companies developed Western countries experienced a hundred years before the development of today honed look of the thing, but only a few decades old Chinese cable companies, are not comparable. Those successful cable companies on foreign growth process and experience, we can refer to learn, to create conditions with international standards, can not always be "industrial concentration" and sing to compare things to say, hey cable industry to make a self-remorse , self-mutilation, and even self-mouthing should do more realistic outreach
Today, the cable industry, the media has become a big stage, it seems that no one can stage a show, rather than a unified command, so that the intersection of the positive and negative energy, so that the whole industry into a haze being. Whether the industry or enterprise, foreign propaganda, should be realistic. Now found there are two aspects of information asymmetry: one is too exaggerated, what "1200000000000", "world first" industry propaganda, although the energy industry is adequate, but only shows the scale of the domestic industry, the production capacity and domestic demand market, is the exact truth and worldwide recognition is unknown; the other hand, in contrast, over exposing the dark side of the industry, too much negative energy industry sporadic, the industry whole earth was gray head brain, the actual effect is bad-mouthing cable industries. These are two aspects of the current industry there is conflicting. If one side calling China a strong brand, while side belittle this industry, so that the domestic cable industry feel then? Let foreign counterparts how to understand? In addition, corporate and product brands are built out, instead of shouting out. Facts have proved that only good at shouting businesses, and not to make domestic and international users to create compelling brand; rather keep silent, hardworking business, but to get a great success. Markets do not believe in tears, do not believe in shouting or realistic to do outreach, and actively create conditions for more access to international markets, deeper understanding, more practical, more important than the day crying.
Should take full advantage of the export sector to clear the area of ​​international channels, a number of export products, good quality, recognized by foreign investors, allowing foreign companies to approval from the approved product, which is the business and occupation open foreign markets to pass. At present, China cable products export channels, mainly through professional exporting company, or by contracting out the unit with the cable products, truly export autonomy, its own cable companies to open up foreign markets rarely. In this case, the cable companies should strengthen ties with the export sector, showing the strength of enterprises to foreign investors through the export sector, and the successful results obtained foreign understanding and recognition. Domestic and international professional exhibition is to attract foreign cable to establish business relations with foreign important occasions. With the assistance of the foreign  WISDOM utp cable trade sector, to set up offices abroad, the country is also an important way for enterprises to go. People know that our cable products exported, or in ordinary low-grade products, and the vast majority of exports to the less developed regions. But it also implies a potential business opportunities, there are still a lot of room for cable outlet. In the old market-driven product sales of new products, to expand sales of new products and old products on the market. Once the research and development of high-end cable products and the formation of mature export capacity, world-renowned brand is naturally born. Should unite against foreign libel framed now, the developed countries are using a variety of "Made in China" products, which found some quality problems. Thus, taking into account the market competition, the cable industry and foreign media also actively follow suit, setting off a boycott of Chinese-made cable products tide. Recently, several cable crackdown on European and American media reports on the emergence of "counterfeit wire and cable mainly from Hong Kong and China," the. For such words framed, the Chinese cable industry should not silence, silence is tantamount to recognition. In recent years, some linked to public places in China are foreign to issue untruths, should cause the whole industry concern. Negative energy domestic cable industry reports, presentations and forums overwhelming, just provide the shells of foreign misconduct. Insiders have revealed: the cable industry in a particular forum meeting, speakers at great length to expose the quality of the cable industry in the domestic audience sadness, anger and emotion at the same time, there was a smiling down on foreign investors, and to himself. " Good "! Faced with this situation, should not we unite to fend off libel and calculating it? Should raise the national consciousness throw shoddy product quality cap Indeed, as the cable industry and the world, China's cable industry does have some quality problems, some even very serious, but should not be the straw that breaks the cable industry. Our ongoing quality improvement, and has achieved gratifying results. For product quality problems, especially the cable business owner, should strengthen national consciousness and awareness of the industry, not just to play their own calculations. If this industry is to topple the majority of the use of imported cable, that is Chinese cable industry disaster. There are cable companies that rely bite to eat, "the official told us," The relevant departments should comply with state laws and regulations, strengthen professional ethics and self-discipline, to eliminate all activities "for the purpose of fines", and effectively carry out a fair and impartial supervision of the industry, as companies do a good thing, and do practical things to help companies throw hats and shoddy products, and guide enterprises to embark on a bright road, with a new attitude in front of the world quality.

The current state of the market power cables

In recent years, the serious consequences of China's power cable industry due to product quality issues , integrity issues , financing problems caused aroused widespread concern and strong reaction , but it is all related to the illegal enterprise Executed - light fines , severe punishment. China had too calm dangerously frequent wire and cable industry , many enterprises, especially SMEs are facing " life to death ." However, due  Network Cabinet to its huge industry output value and profits , coupled with domestic cable companies for more than 90 % of the capacity is concentrated in low-end products , so there are a lot of small businesses to enter the industry . Many small businesses and even desperate , shoddy , causing the rate of qualified products industry is only about 1 /3. Currently, a strong proponent of the concept of environmental protection in the world , the growing importance of environmental protection for national attention. Using conventional wire and cable PVC, when it abandoned after incineration produces dioxins, lead compounds have toxicity problems when buried processing.
Therefore, the market need for more secure and less environmental pollution cable . Europe , the U.S. and Japan on the hazards associated with the cable attaches great importance to its government not only to emissions from the cable manufacturing process strictly limited, and processing scrap cable monitoring the implementation of a comprehensive , forcing cable manufacturers use materials meet the environmental requirements replacing traditional materials, manufacturing environmentally friendly cable or the so-called " clean cable ." Meanwhile, China 's huge market has gradually surfaced wire and cable , how to seize the historic opportunity , how innovation , increased R & D efforts in order to meet both the needs of rail transport or ship building , port construction , is to China 's largest wire and cable manufacturers test . Again, the Chinese wire and cable market should be caught China 's wire and cable business , not cheaper foreign wire  Terminal BLOCK and cable manufacturers . To this end, China 's wire and cable companies should actively union , through technology sharing , experience sharing , financial support , etc., jointly won the huge domestic market .
Speed ​​railway construction in China will bring huge demand for rolling stock cables , communications and signal cables and other markets , the average annual demand is expected to reach 16-20 million meters and 7-10 million meters respectively ; urban rail transit vehicles will generate annual demand cable 2.5-3 million meters ; traffic signal cables annual demand of 1.5-2 million meters . Visible , increasing the number of railway operating mileage will drive strong demand for rail transportation . At the same time , the demand for wire and cable will be equally strong momentum to rise. China 's wire and cable companies have to enhance the capability of independent innovation as a business development strategy , and implementing all aspects of production and operation , by strengthening technological innovation in key areas have more intellectual property in the field of cutting-edge science and high-tech strategy possession place

Low voltage plastic insulated power cable insulation damage repair methods

Power cable for cable transmission or distribution of electric power systems . With the development of the petrochemical industry , plastic insulated power cables due to its manufacturing process is simple audio cable, to facilitate the construction , maintenance, has become an important variety of low-voltage power cables . However, the insulation will inevitably bumps, scratches , crushing failure point defects in the plastic extrusion process , in order to ensure a constant length production, reduce waste, while Displayport CABLE  ensuring that the electrical characteristics of the finished cable meets the requirements of the standard , we need to find a suitable insulation damage repair methods . A thermal welding method for thermal welding method is to use a stereo cable suitable power electric iron, iron heat integration. 1.1 Low Voltage PVC insulated cables
 PVC material is a thermoplastic material , such as to repair damaged cable insulation should be used in the form of heat welding . In order to ensure and improve the electrical and mechanical performance audio cable machine patch , patch overlapping single winding insulation tape , winding smooth. 1.2 low voltage XLPE insulated cables
 A thermosetting material XLPE materials belong audio cable, insulating molecular silane crosslinked network after curing . In the insulated core insulation damage water crosslinking process , using heat welding repair, and then wrapped with cellophane tape repair to prevent fixes ; in boiling water crosslinking process core insulation to insulation damage should be repaired using heat welding method and pressure levels are high voltage 35kV adhesive tape duplication and ensure high tape wrapping should be smooth .
Method 2 stereo line repair repair complex method of heat shrinkable tube heat shrinkable tube shrink sleeve is hot  Mini HDMI cable right size defects , shrink packaging tight defects. Whether it is made ​​of an insulating material thermoplastic or thermosetting crosslinked polyethylene and polyvinyl chloride audio cable materials , insulated core nominal cross-section of less than 10mm2, should be used to shrink tube heat shrinkable tube repair , after the repair is completed, wrapped with insulating tape . Three kinds of hot fix iron welding repair method for repairing audio line tools, you can achieve a complete cable insulation performance levels , but the repair process is more complicated , requiring the operator to have a higher level of technology.
A small section of the wire , if the thermal complex audio cable repair welding methods , it is difficult to ensure the quality of maintenance , repair methods should be used to heat shrinkable tube.
In order to ensure electrical performance after the repair , insulated core standard requirements , must be insulated voltage spark 3.5kv/5min voltage testing, product layer. Only a small range of audio cable insulation damage repair methods , defect severely scratched , injured , hurt , in order to ensure the quality of the product, not to repair .

Step power cable installation works about

Because of the high voltage cable laying voltage level is relatively high, construction workers need to exercise caution.
When ready to shop on the roadside manhole cable , more than ten thousand volts suspect inadvertently underground high voltage cable causing an explosion , a fireball was coming out flapping body, burn spot , who also burned the clothes are still dying at the hospital utp cable  where she lives disastrous. Hong Kong Labour Department has sent follow-up to understand the causes of accidents . Two workers for the EMSD maintenance workers , though still conscious , serious injuries , and is currently hospitalized in intensive care units when needed hospital . Plug only works include: oil-filled power cable plugs ended production, for installation tank , automatic drainage and signaling devices , etc. . Finally, ground engineering: the best edge connectors, transposition boxes, protection, grounding box installation.
The first is the site transportation , site transport from the warehouse to the point of loading and unloading of  Network Cabinet construction , transportation and engineering materials , including return empty .
 Followed by the local project : local projects including road excavation , tunneling , channel construction.
 Third, laying works include: laying in the middle head production, lift the cover , pipe , school tide, pulling head production.
 Fourth, the two ends of the project include: support , frame and suspension bridge fabrication and installation of its foundation , the terminal head production, installation of oil pressure and signaling devices , were kind of electrical performance testing.

Prospects for the aluminum cable to good

Copper and aluminum cable industry continues to struggle for many years , especially in the high copper prices , a sharp decline in profit margins in the case of cable production , copper or aluminum section is the voice of aluminum and copper are particularly high. But for copper to aluminum section if it works but it is his own interpretation . Some in Europe , for example, to prove the reliability of aluminum cables ; while RAC CABLE  on the other hand it in by some other evidence to explain the presence of aluminum and copper cable only some differences . Therefore , the dispute has been difficult to separate the copper and aluminum level , the development of aluminum cable has also been stalled.
Clearly emerged copper wire should be specified . Since then, copper cable continues to prevail , and copper to aluminum sections in turn become an industry appeal , but failed to have policies escort.
However, this situation changed in recent finally happened . Recently, in the wire and cable summit national quality inspection center and Anhui Provincial Government jointly organized the MIIT described to aluminum cables are the name , the Ministry said it would actively guide enterprises to key technologies, cutting-edge technology and basic technology research, through technology innovation to accelerate industrial restructuring. Promote cross-linking cables natural processes, promote circulation water or air-cooled technology , accelerate the development and utilization of renewable silane crosslinked ethylene-propylene rubber cable development, silane XLPE insulated cable and efficient equipment . It is reported that , in aluminum alloy wire cables at low buildings, structures and ancillary facilities , such as supporting a large number of occasions to use . This can utp cable  alleviate high copper prices caused by high prices of domestic cable industry , the problem of low profit margins . Thus , aluminum copper clad aluminum cable technology and technology will usher in the next great development , promote the development of the entire cable industry and perhaps contributed. The reason that the copper conductor and aluminum conductor cables have big differences, in fact, a large part of the reason is that sellers of copper and aluminum sales side , not all from the perspective of the development of the cable industry considerations. Copper development, manufacture and sale of the cable industry , naturally, want more choice of copper , on the contrary , aluminum development, manufacture and sale of party they want to be able to use aluminum cable industry . But for the cable industry, the kind of material stable performance, low cost , natural selection is the fundamental condition for being .

Around five performance aluminum cables

Safety performance of an aluminum cable , history proved ; 2 , testing and certification ; 3 , aluminum alloy composition effect ;
After adding rare earth alloy conductor components and iron and other ingredients, greatly improved the performance of its electrical properties and connections , especially when you add iron to produce annealed conductor creep resistance of high strength , when current overload, iron play continued connecting role in making aluminum conductor creep does not occur. Creep great harm to the cable , if the cable creep , its original point of contact pressure is not tight enough , the pressure Network Cabinet  is reduced so that the contact resistance increases rapidly after the current flow caused by overheating of the joints , if unscheduled maintenance, there will be security risks . Is very important to solve the problem of cable creep . Creep: metal temperature , force and its own weight , over time , permanent deformation will not be slow to recover , the phenomenon of creep. 4 , flame retardant cable insulation material used aluminum retardant silane cross -linked polyethylene (XLPE), the use of self-locking armored structure, thermal performance is far superior to PVC jacket material , the process can quickly heat , flames disappear after quickly extinguished the flames , then do not delay other materials , very excellent flame retardant properties . Aluminum cable using new materials and new technology , to ensure its use more secure. Electrical properties of an aluminum cable , cross-sectional area cable ampacity copper alloy conductors 1.5 times , alloy conductor and copper conductor electrical performance as implement the same carrying capacity , resistance, and pressure loss . The resistance between the aluminum alloy of aluminum and copper, aluminum slightly higher , but lower than copper , provided at the same flow cross section , the weight of the aluminum alloy conductor of equal length is only half the copper . If the conductivity of the copper at 100 %, the conductivity of the conductor is about 61.2% of the alloy , the fiber optic cable  proportion of the alloy is 2.7 , the proportion of copper is 8.9 , the (8.9/2.7) × (0.612 / 1) = 2, i.e., 2 the unit weight of the same alloy with a resistor of resistance of copper per unit mass , so that when the cross-sectional area of ​​the alloy is 1.5 times that of copper conductors is the same as the electrical properties , i.e. to achieve the same cross-sectional flow and copper , resistance, and voltage loss. Factors affecting the flow of electricity cables cut a lot , such as ; line characteristics ( such as the working electrode , a current type, frequency , load factor ) ; structure of wires and cables ( such as the structure of the conductive core , the core number , the type of insulating material , shield and structures and materials , the outer diameter of the inner and outer sheath of the total ) ; laying  conditions ( such as air laying, pipe laying, direct  burial, underground laying of the channel , underwater in laying ) ; conductive core maximum allowable operating temperature and ambient conditions ( such as air and soil temperature, soil thermal resistivity , heat around the proximity effect ) , etc. 2 , reducing the cable outer section of aluminum cable production process to squeeze the most advanced technology in Germany , so the conductor fill factor can reach 93 %. And aluminum cable uses a silane crosslinked polyethylene , polyvinyl chloride thickness of the insulation just 2/3 can be far more than conventional insulation. But generally only copper fill factor of 80%, is commonly used in PVC insulation , aluminum cable diameter so on the basis of copper increased by only 11% or less , you can have the same electrical properties of copper . Visible , no need to change the original use of aluminum cable duct design using copper cables . ( General designer piping size is 150% copper , considering the recent Capacity problems, the size of piping to 200% of the copper , so wear a tube is not a problem . )