Introduction to Single Core Cables

Single core refers to having only one conductor within an insulation layer. When the voltage exceeds 35kV, most single core cables are used, and the relationship between the wire core and the metal shielding layer can be seen as the relationship between the coil and the iron core in the primary winding of a transformer. When a single core cable core passes through an electric current, there will be a magnetic field wire cross-linked with aluminum or metal shielding layer, causing induced voltage to appear at both ends.

A single core wire is a commonly used wire in home decoration, with only one conductor core inside the insulation layer and no sheath layer. Common uses include single core wires for household lighting, sockets, air conditioning, and more. Single core wire classification.

Single core wires include BV wires, RV wires, and BVV wires. BVR wires are multi-core wires with relatively soft materials and many small copper wires twisted together.

Regulations

Cables with voltage levels of 35kV and below are grounded at both ends because most of these cables are three core cables. During normal operation, the total current flowing through the three cores is zero, and there is basically no magnetic flux outside the aluminum or metal shielding layer. Therefore, there is basically no induced voltage at both ends of the aluminum or metal shielding layer, so there will be no induced current flowing through the aluminum or metal shielding layer after grounding at both ends.

Power cables are generally composed of wires, insulation layer, and protective layer, including single core, double core, and three core cables.

Single core refers to having only one conductor within an insulation layer. To be used in single-phase lighting circuits, two parallel conductors need to be laid. Double core refers to having two conductors in one insulation layer, and only one conductor is used for laying in single-phase lighting circuits. (Wires can be divided into multiple or single strands, as well as soft or hard cores. Selection depends on usage conditions and power consumption).

classification

Single core wires include BV cables, RV wires, and BVV wires. BVR wires are multi-core wires with relatively soft raw materials and several small copper core wires twisted together.

colour

Commonly used single core wire colors include red, yellow, blue, green, black, white, dual color (yellow, green), and brown.

Advantages and disadvantages

Advantages: Due to the small cross-sectional area ratio, it is not easily oxidized, resistant to short-circuit current impact, and has a relatively long service life.

Disadvantages: The wire is relatively hard, making it inconvenient to pull wires in some places. After bending, it is difficult to straighten it, and multiple bends can easily damage the wire.

purpose

The purpose of a single core cable is a type of power transmission equipment consisting of a conductor and insulation material. It has a wide range of applications and can be used in various fields such as construction, industry, transportation, communication, etc.

In the field of construction, single core cables are mainly used for power transmission and lighting. It can transmit electricity from the power source to various electrical equipment inside the building, such as lamps, sockets, televisions, etc. In addition, single core cables can also be used for lighting systems in buildings, providing a bright and comfortable environment for people.

In the industrial field, single core cables are mainly used for power transmission and control of machinery and equipment. It can transmit electricity from the power source to various machine equipment, such as machine tools, production lines, etc. In addition, single core cables can also be used in the control system of machine equipment to achieve control and adjustment of machine equipment. stay