Good products and high-quality service concept are the key to the development of power cable enterprises. From various factors affecting the competitiveness of power cable enterprises at present, quality and technology, raw materials and internal management are the most important factors determining the competitiveness of enterprises.<了解详情>

Continuous scratch of conductor is the most common cause of corona, and corona is one of the most important causes of power loss in power system. In order to avoid the occurrence of wire scratch, the following aspects should be controlled in the production: first, consider from the conductor itself. First, ensure that the aluminum rod is not damped, which causes the aluminum chips in the working area of the drawing die hole to stay, and the lubricating oil can not all enter the working area, so that the aluminum wire pulled out is not round and smooth. The second is to ensure that the drawing oil is clean and free of moisture. In the process of wire drawing, the drawing oil is in a high temperature state when it enters the working area from the lubricating area. If there is certain moisture in the drawing oil, the lubricating oil will be diluted, and the lubricating effect will be greatly reduced, resultin<了解详情>

Without qualified raw materials, it will be like "a skillful woman can't cook without rice", so this is also the most basic factor determining the quality of ACSR. Therefore, to ensure the quality of the steel cored aluminum wire, it is necessary to ensure that the raw material environment in the production line also has quality and quality assurance, which can continuously supply the high-quality steel wire and aluminum wire materials of the steel cored aluminum wire.<了解详情>

What do you think of "replacing copper with aluminum" For the wire and cable industry, the most obvious material replacement is to use aluminum conductor instead of copper conductor. In the relative cost of copper and aluminum conductors, we need to consider the price, specific gravity, conductivity and other factors, in order to get the real answer whether using aluminum conductors can save costs. Copper is heavier than aluminum. The specific gravity of copper is 8.9g.cm3, and the specific gravity of aluminum is 2.7g/cm3. That is to say, under the same conductor specification, the weight of copper conductor is 3.3 times that of aluminum conductor. However, the conductivity of aluminum is only 61% of that of copper, that is to say, the cross section of aluminum conductor is 61% larger than that of copper conductor under the same transmission current. Therefore, in terms of conductor weight, to make the two conductors have the same carrying capacity, the weight of copper conductor is about twice that of aluminum conductor. In addition, the price ratio of copper to aluminum is about 3.5, so the cost of equivalent copper conductor is seven times that of aluminum conductor. Of course, the simple cost comparison mentioned above does not explain the whole problem. Because the cable product is limited by the standard conductor specification, it is impossible to buy the aluminum core cable with the same conductivity as the copper core cable. Therefore, if the cable is made of aluminum conductor, the aluminum conductor with larger cross section must be used. Experience shows that under the condition of equal carrying capacity, the conductor section of aluminum core cable should be twice that of copper core cable. Since the cross-section of the aluminum conductor is twice that of the copper conductor, the subsequent increase in the insulation, sheath and armor materials of the aluminum conductor weakens the price advantage of using the aluminum conductor. That is to say, the price advantage of aluminum and copper is not great, because the conductor is only a small part of the cost of the whole cable after all. Taking 70mm2 copper core cable as an example, the cost of copper conductor accounts for about 65% of the cost of the whole cable, while the cost of 120mm2 aluminum core cable with equal current carrying capacity can be saved by 23.5%. If the cost of copper conductor accounts for 80% of the cost of the whole cable, the cost savings of aluminum core cable with equal current carrying capacity can reach 46%. Only when the cost of copper conductor in the cable drops below 50% of the cost of the whole cable, the aluminum core cable will lose its cost advantage. At present, the cost of most copper core low-voltage cables and many medium voltage cable conductors has exceeded 50%. Therefore, compared with copper core power cables, aluminum core power cables have obvious advantages in cost saving.<了解详情>

1. When storing the cable, it is strictly prohibited to contact with acid, alkali and mineral oil, and it shall be stored in isolation from these corrosive substances; 2. There shall be no harmful gas damaging the insulation and corroding the metal in the warehouse for storing cables; 3. Try to avoid storing cables in the open air in an exposed way, and the cable reel shall not be placed horizontally; 4. During the storage period, the cable shall be rolled regularly (once every three months in summer, and may be extended in other seasons as appropriate). When rolling, roll the storage plate downward and upward to prevent the bottom from moisture and rot. Always pay attention to whether the head of the wire is intact during storage; 5. The storage period of the cable is limited to the ex factory period of the product, generally not more than one and a half years, and the longest not more than two years; 6. During transportation, it is strictly prohibited to drop the cable or cable reel with cable from a high place, especially at a lower temperature (generally around 5 ℃ or below), throwing or dropping the cable may lead to cracking of insulation and sheath;<了解详情>

1. In the process of line design, the capacity of the site shall be accurately verified, and the possibility of new capacity in the future shall be fully considered, and the appropriate type of conductor shall be selected. The larger capacity, the thicker conductor should be selected. Line design and reasonable selection are the key steps to prevent overload. If the design and selection are improper, it will leave a congenital hidden danger that is difficult to rectify. Some small projects and places are not carefully designed and selected. It is very dangerous to choose and lay lines at will. The bearing capacity of the original circuit shall be fully considered for new electrical appliances and electric equipment. If the original line does not meet the requirements, it shall be redesigned and reconstructed.<了解详情>

1. The products of wires and cables used in power system of power system mainly include overhead bare wires, bus bars (buses), power cables (plastic cables, oil paper power cables (basically replaced by plastic power cables), rubber sheathed cables, overhead insulated cables), branch cables (replacing part of bus wires), electromagnetic wires and electrical equipment wires and cables for power equipment. 2. The wires and cables used for information transmission system mainly include local telephone cables, TV cables, electronic cables, radio frequency cables, optical fiber cables, data cables, electromagnetic cables, power communication cables or other composite cables. 3. This part of instrument system is applied to almost all products except overhead bare wires, but mainly power cables, electromagnetic cables, data cables, instrument cables, etc.<了解详情>