Wholesale and retail JKLYJ-10KV-1 * 25 Hubei Jingmen overhead insulated wire manufacturer

Description :

　　 Wholesale and retail JKLYJ-10KV-1 * 25 Hubei Jingmen overhead insulated wire manufacturer

　　Purpose of overhead insulated conductor:

　　 Overhead insulated conductors are a new type of material that can solve various problems encountered by conventional conductors during operation. Compared with traditional overhead bare conductors, overhead insulated conductors have significant advantages and have been widely used in 10kV distribution networks. However, the construction technology and design methods of such conductors are different from those of ordinary conductors. If the design and construction technology are improper, it not only cannot guarantee the construction quality of the line, but also cause safety hazards. This article mainly analyzes the characteristics and planning methods of overhead insulated conductors in 10kV distribution networks.

　　Overhead insulated conductor; 10kV distribution network; characteristic; planning

　　 The development of urbanization has had a certain impact on the safety of the distribution network system. In order to ensure the safety and stability of power supply, overhead insulated wires can be applied in the distribution network. Overhead insulated wires are a new type of material that can solve various problems encountered by conventional wires during operation. Therefore, they have begun to receive attention from the power sector. Below is an analysis of the characteristics and planning of overhead insulated conductors in 10kV distribution networks.

　　Characteristics of using overhead insulated conductors:

　　 1. Rated voltage: 0.6/1KV, 10KV;

　　 2. The long-term allowable working temperature for cables is 70 ℃ for PVC insulation and 90 ℃ for cross-linked polyethylene insulation.

　　 3. When short circuited (maximum time not exceeding 5 seconds), the temperature of the cable is 160 ℃ for PVC insulation, 150 ℃ for high-density polyethylene insulation, and 250 ℃ for cross-linked polyethylene insulation;

　　 4. The ambient temperature during cable laying shall not be lower than -20 ℃;

　　 5. Allowable bending radius of cable:

　　 (1) Cables with a rated voltage below 1KV: For cables with an outer diameter (D) less than 25mm, it should not be less than 4D, and for cables with an outer diameter (D) of 25mm or more, it should not be less than 6D;

　　 (2) The rated voltage of 10KV cable should not be less than 20 (D+d). In the formula: D-actual outer diameter of the cable, d-actual outer diameter of the cable conductor.

　　 Overhead insulated conductors are a new series of products for transmitting electrical energy through overhead transmission lines, and are preferred for the construction and renovation of 10kV transmission lines in power grids. It is the most suitable series of products for line maintenance and safety. Soft copper wire core products are suitable for transformer down leads.

　　 JKY、JKTRY、JKLY、JKLHY、JKLYJ/Q、JKLHYJ/Q、JKLY/Q、JKLHY/Q、JKLGYJ、JKLGY Generally, it is a single core overhead cable with a conductor cross-section of 10-400mm2.

　　JKLYJ/B and JKLHYJ/B are generally three core or three core+carrying stranded wire overhead cables, where the main cross-sectional area of the conductor is 25-400mm2 and the main cross-sectional area of the carrying stranded wire is 25-120mm2. Natural color overhead cable, such as JKLYJ/B-10 3 × 240+95 (A) GB/T 14049-2008, refers to an aluminum core lightweight cross-linked polyethylene insulated overhead cable with a rated voltage of 10kV and 4 cores. The main core is 3 cores with a nominal cross-section of 240mm2, and the load-bearing stranded wire is galvanized steel wire with a nominal cross-section of 95mm2. All aluminum 10kV overhead insulated conductor, in accordance with standard GB/T14049-2008

　　 Wholesale and retail JKLYJ-10KV-1 * 25 Hubei Jingmen overhead insulated wire manufacturer

　　Acceptance Criteria:

　　The product should be inspected and qualified by the quality inspection department of the manufacturing plant before leaving the factory, and the factory products should be accompanied by a quality inspection certificate.

　　10 Packaging, transportation, and storage

　　1. The cable should be properly packaged and delivered on a cable reel that meets the requirements of JB/T 8137-1999.

　　The cable ends should be reliably sealed, and the cable ends extending outside the tray should be covered with protective nails. The length of the extension should not be less than 300 mm

　　10.3 The additional labels on the outer side of the cable reel of the coiled cable and the coiled cable should indicate:

　　a) Manufacturer name or trademark;

　　b) Cable model and specifications; c) Length (in meters); Gross weight (in kilograms);

　　e) Manufacturing date: Year/Month;

　　D) The symbol indicating the correct rotation direction of the cable reel; G standard number.

　　10.4 Transportation and storage shall be carried out in accordance with the following requirements:

　　a) Cables should be avoided from being stored outdoors, and cable reels are not allowed to be laid flat;

　　b) During transportation, it is prohibited to throw cable reels containing cables from high places and mechanical damage to cables is strictly prohibited;

　　c) When lifting packaging, it is strictly prohibited to lift several plates at the same time. On vehicles, ships, and other transportation vehicles, cable reels must be securely placed and fixed using appropriate methods to prevent collisions or tipping over.

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