[General description] It can solve the problem of ultra-high voltage current transmission (overhead conductor) of ± 800kV trunk line with section of 800mm2 and below; Long and short distance intelligent power transmission (power cable) with voltage grade of 35kV and below and section of 500mm2 and below; It is used for power transmission of real estate and power and signal transmission of home decoration
It can solve the problem of ultra-high voltage current transmission (overhead conductor) with trunk line ± 800kV and section of 800mm2 and below; Long and short distance intelligent power transmission (power cable) with voltage grade of 35kV and below and section of 500mm2 and below; It is used for power transmission of real estate and power and signal transmission of home decoration.
has the characteristics of large transmission capacity, working temperature, no limit of drop, convenient installation and laying, and is widely used in industrial and mining enterprises and urban power grids. Medium voltage cross-linked cables are mainly used in power and lighting power transmission and distribution systems in power, construction, industry and mining, metallurgy, transportation and other departments. Because polyethylene is the plastic with the best electrical insulation performance and becomes a thermosetting material after being cross-linked by macromolecules, it has good electrical performance, mechanical performance and heat resistance. In the past 20 years, it has become the leading variety of medium and high voltage cables. The products are applicable to various voltage levels from 3.6/6 to 26/35 kV, which can be divided into YJV cross-linked polyethylene insulated PVC sheathed power cables, YJV22 cross-linked polyethylene insulated steel tape armored high voltage cables, and YJLV cross-linked polyethylene insulated aluminum core steel tape armored high voltage cables.
Medium voltage cable is a kind of power cable, which refers to the power cable used for transmission between 10KV-35KV (1KV=1000V), and is mainly used for the trunk road of power transmission. The product executive standards of medium voltage cables are GB/T 12706.2-2020 and GB/T 12706.3-2020. The medium voltage power cable cross-linked polyethylene insulated power cable uses chemical or physical methods to change the polyethylene molecule from linear molecular structure to three-dimensional network structure, and from thermoplastic polyethylene to thermosetting cross-linked polyethylene, thus improving the aging resistance, mechanical properties and environmental resistance of polyethylene, and maintaining excellent electrical performance.
The allowable long-term maximum temperature of the conductor of cross-linked polyethylene insulated power cable is 90 ℃, which is higher than that of low insulated cable, PVC insulated cable and polyethylene insulated cable, and has the advantages of light weight, simple structure, convenient use, chemical corrosion resistance and no drop limit for laying.
Low voltage cable
Low voltage power cable, which is used to transmit and distribute electric energy, is also called power cable or power cable in some occasions. Ordinary power cables are commonly used for outgoing lines of high-rise buildings, oil fields, power stations, power plants, urban underground power grids, power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines crossing rivers and seas; Low voltage fire-resistant power cables are applicable to high-rise buildings, oil fields, power plants, power plants, mines, chemical industry, mines, subways and other places with high fire protection requirements, and are also required cables for emergency power supply, fire pumps, elevator communication signal systems; This product has a high fire resistance. Under the condition of direct combustion of flame, there will be no short circuit and open circuit faults for a certain period of time, so as to ensure continued power supply to maintain lighting and transmission signals, protect personnel from safe evacuation in sufficient time, which is conducive to fire fighting and reduce losses. In power lines, the proportion of cables is gradually increasing. Power cable is a cable product used to transmit and distribute high-power electric energy in the trunk line of power system, including 0.6/1-1.8/3KV voltage grade.
Bare overhead conductor
The round concentric stranded air conductor is produced according to the standard GB/T 1179-2017, which refers to the conductive wire without insulation and protective layer. Because of its low price and convenient installation and maintenance, it is widely used for long-distance power transmission through power lines. Its main products include aluminum strand, steel cored aluminum strand, aluminum clad steel cored aluminum strand, aluminum alloy strand, aluminum clad steel strand, etc
Overhead insulated cable
Aerial insulated cable is an overhead conductor with insulating layer and protective sheath. It is a special cable manufactured by a production process similar to that of cross-linked cable. It is a new transmission mode between overhead conductor and underground cable. Aerial cables are all single core, which can be divided into hard aluminum wire structure, hard drawn copper wire structure, aluminum alloy wire structure, steel core or aluminum alloy core support structure and self-supporting three core laminated structure (the wire core can be hard aluminum or hard copper wire) according to its structure. It is characterized by high power supply reliability, good power supply security, convenient erection and maintenance, and reasonable economy. Its main technical parameters include weather resistance, insulation level, inner and outer semi conductive shielding layers. Overhead cables are widely used in power transmission at home and abroad.
Aluminum alloy cable
This product is a new type of energy-saving and environment-friendly power cable with AA8030 series aluminum alloy material as conductor and advanced technologies such as special compaction process and annealing treatment. It has the characteristics of long service life, light weight, high cost performance, and can be used in photovoltaic power plants, wind power generation, real estate, subway and other places.
The control cable is mainly used to transmit control and measurement signals. The control cable is suitable for industrial and mining enterprises, energy and transportation departments, control and protection lines with rated AC voltage of 450/750V and below, such as the wiring of electrical appliances and instruments in power distribution devices, as well as single machine control or unit equipment control, signal and measurement systems in power stations, substations, mines, petrochemical enterprises, etc. PVC, XLPE and silicone rubber are commonly used insulation materials for control cables. The control cable is used to directly transmit electric energy from the distribution point of the power system to the power connection line of various electrical equipment and appliances, commonly known as the control line. To prevent the influence of external magnetic field, the commonly used control cables are shielded control cables, including shielded control cables for electrical equipment and marine shielded control cables.
For home decoration, it can provide BV line, flame retardant home decoration line, fire-resistant home decoration line, European standard environmental protection home decoration line, irradiation environmental protection home decoration line, double-layer coextrusion insulated radiation cross-linked halogen-free low smoke flame retardant wire (JGT 441-2014), floral wire, parallel sheathed wire (BVVB BLVVB), rubber sleeve wire, high-end audio special line, high-end home decoration integrated smart cable and other categories.
This series of products are generally used in power devices, fixed wiring and flexible connection appliances, household appliances, small electric tools, instruments and lighting and other occasions with rated voltages of 450/750V and below. The products are manufactured in accordance with GB/T5023-2008 Polyvinyl Chloride Insulated Cables with Rated Voltages up to and including 450/750V, JB/T8734-2016 Polyvinyl Chloride Insulated Cables, Wires and Flexible Cords with Rated Voltages up to and including 450/750V, and can also be manufactured in accordance with IEC, British Standards, German Standards and American Standards recommended by the National Standards and Electrician Committee.