Overhead insulated cable is an overhead conductor with insulating layer and protective sheath. It is a special cable manufactured by a production process similar to cross-linked cable. It is a new power transmission mode between overhead conductor and underground cable. Overhead cables are single core. According to their different structures, they 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 corrugated structure (the wire core can be hard aluminum or hard copper wire), etc. It has the main characteristics of high power supply reliability, good power supply safety, 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.
control cable is mainly used to transmit control and measurement signals. Control cables are applicable to industrial and mining enterprises, energy and transportation departments, control and protection lines with AC rated voltage of 450 / 750V and below, such as the wiring of electrical appliances and instruments in power distribution devices. They can also be used for single machine control or unit equipment control, signal and measurement systems in power stations, substations, mines, petrochemical and other enterprises. PVC, XLPE and silicone rubber are common insulating 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. The category of shielded cables for marine control equipment and the category of shielded cables for external control.
Shielded cable refers to the cable with electromagnetic shielding performance with metal wire braid or metal belt wrapped with shielding layer. It is suitable for transformers and similar equipment that need to shield electromagnetic signals. Cable shielding refers to that the outer mesh braid of the cable has been grounded at one end, which can make the external electromagnetic radiation and magnetic field radiation directly enter the ground without interference to the inner wire. It is generally used for lines with high frequency and low signal level, such as cable TV, lead from frequency converter to motor, analog lead, and some interfering transmission lines, such as computer shielded cable, etc. As long as the cable with shielding layer is called shielded cable, power cable and control cable can be added with shielding layer. Computer and instrument cables generally have shielding layers to prevent the interference of external electromagnetic signals
Rail transit cable is a new type of special wire and cable product born with the development of urban transportation. It can be widely used in intercity rail transit, including various types of Intercity Railway (track) lines and intercity trains, i.e. high-speed railway and other power transmission and distribution networks
Marine cable is a kind of wire and cable used for power, lighting, control and communication transmission of various ships in rivers and seas and offshore or offshore buildings, including marine power cable, marine control cable, marine communication cable, etc. Generally, the laying space of marine cables is limited, so the armored structure adopts metal wire braiding, which is the biggest difference between the structure and land-based ordinary power, control and communication cables.
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 and high cost performance. It can be applied to photovoltaic power stations, wind power generation, real estate, subway and other places