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Power cable
Introduction: It boasts excellent thermal and mechanical properties, outstanding electrical performance, and superior resistance to chemical corrosion. At the same time, it features a simple structure, lightweight design, and is not constrained by deployment limitations due to height differences. It is widely used in urban power grids.
Scope of Application:
Low-smoke, halogen-free flame-retardant cables are difficult to ignite and possess the ability to inhibit or prevent flame spread. Moreover, once ignited, these cables exhibit characteristics such as being halogen-free, producing low smoke, non-toxic, and non-corrosive. They are suitable for applications in high-rise buildings, hotels, hospitals, subways, nuclear power plants, tunnels, power plants, mines, oil fields, chemical industries, and other similar environments.
Low-smoke, halogen-free fire-resistant cables not only meet the performance requirements of low-smoke, halogen-free flame-retardant cables but also maintain the capability to supply power to circuits under fire conditions. They are primarily used in locations requiring fire resistance—for example, in power supply lines for fire alarms, firefighting equipment, smoke-extraction systems, emergency transportation routes, emergency lighting, and other critical facilities. Return to source for more information.
1. YJLV is an aluminum-core power cable, and its model name is: Aluminum-core cross-linked polyethylene-insulated polyvinyl chloride-sheathed power cable.
2. The meaning of the YJLV cable is as follows:
YJ----Cross-linked polyethylene insulation
L----Conductor material is aluminum
V----Polyvinyl chloride sheath
3. The operating temperature of the YJLV cable is as follows: the maximum rated operating temperature of the conductor is 90°C; the maximum short-circuit temperature of the conductor must not exceed 250°C. When laid in soil, the ambient temperature is 25°C, and the maximum duration of such operation shall not exceed 5 seconds. The installation and laying temperature must be no lower than 0°C. When laid in air, the ambient temperature is 40°C.
YJV22 refers to a cross-linked polyvinyl chloride (PVC)-insulated cable with steel tape armor. The letter "YJ" indicates cross-linking, while the letter "V" stands for the PVC insulation material. The number "22" denotes the type of armor used. This cable boasts excellent heat resistance, high current-carrying capacity, resistance to aging and corrosion, and outstanding durability. It is easy to install and is typically used in outdoor environments, where it can even be buried underground.
The YJV cable is a power cable with cross-linked polyethylene insulation and a polyvinyl chloride sheath.
This type of cable boasts excellent electrical performance and outstanding resistance to chemical corrosion. It features a simple structure and light weight, and its installation is not restricted by elevation differences. It is widely used in urban power grids as well as in factories and mining areas.
Cross-linked polyethylene significantly enhances the mechanical properties of polyethylene. Moreover, its rated operating temperature is 90 degrees Celsius—considerably higher than that of polyvinyl chloride and polyethylene-insulated cables—thus enabling a higher current-carrying capacity for the cable.
I. What does KVV cable mean?
1. The KVV cable is a type of control cable, commonly known as polyvinyl chloride-insulated control cable. It is generally used for wiring in control, signal, and measurement systems.
2. Its rated voltage is either 450/750V or 0.6/1kV.
3. When operating continuously, the conductor’s maximum working temperature must not exceed 70 degrees Celsius, and the ambient installation temperature must not be lower than zero degrees Celsius. If the cable is to be installed in environments below zero degrees Celsius, it must be preheated first.
4. Permissible bending radii: ① For non-armored cables, the permissible bending radius is six times or more the outer diameter. ② For armored or copper tape-shielded cables, the permissible bending radius is twelve times the outer diameter. ③ For shielded flexible cables, the permissible bending radius is also six times or more the outer diameter.
5. Installation scope: This cable is suitable for fixed installations, such as indoors, in cable trenches, and in pipelines.
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