Cross-linked cables with this insulation wire are suitable for fixed installation in power systems with alternating voltages of 450/750V and below. Long-term working temperature: BV-105 type not exceeding 105°C; others not exceeding 70°C. The installation temperature of the wire should not be below 0°C. The main types of this insulation wire include: BV, BLV, BVR, BVV, BLVV, BVVB, BLVVB, BV-105, etc., with the first "B" indicating fixed installation, "L" for aluminum core (copper core is not indicated), the first "V" for polyvinyl chloride insulation, the second "V" for polyvinyl chloride sheath, the second "B" for parallel (round is not indicated), and "R" for soft wire.
Wires are conductive devices used to transmit electrical energy from power sources to various electrical appliances. They are widely used in everyday life and across numerous industries, almost everywhere. The working principle of wires is very simple; they achieve electrical energy transmission through the movement of free electrons within the conductors under the influence of an electric field.
Wires are primarily composed of conductors and insulators. Conductors are usually metals, such as copper or aluminum, due to their excellent conductivity. Insulators are the materials that surround the conductors, like plastic or rubber. The purpose of the insulation is to prevent the conductors from coming into contact with each other and to stop the current from leaking into the surrounding environment. This ensures the safe and efficient transmission of electrical power.
Wires can be categorized into various types based on their usage and characteristics. For instance, there are two common types of household wires: unshielded cables and shielded cables. Unshielded cables are generally used for low-voltage and low-frequency circuits, such as residential wiring, while shielded cables are suited for high-voltage and high-frequency circuits, like audio and video equipment. Additionally, there are wires specifically designed for communication purposes, such as telecommunication lines and network cables.
Wires can be categorized based on their conductor cross-sectional area, the thickness of the conductor, and the type of insulation material. A larger conductor cross-sectional area results in higher conductivity. The thickness of the conductor also affects resistance and the flow of current. The type and quality of the insulation material determine the durability and safety of the wire.
