The characteristics of the cable and how to buy it
Release time:
2022-07-28
Cables, cables play an important role in cable production in people's lives. When choosing cables, the selection of cable models and cable specifications (conductor cross-section) should generally be followed.
Cables, cables play an important role in cable production in people's lives. When choosing cables, the selection of cable models and cable specifications (conductor cross-section) should generally be followed.
Selection of cable model
When choosing a wire and cable, consider the application, setting conditions, and security; for example,
According to the usage, you can choose power cord, air insulated cable, control cable, etc.
According to the commutation conditions, ordinary insulated cables, steel belt armor, steel belt armor, anti-corrosion cables, etc. can be selected.
According to safety requirements, short wires, fire-resistant cables, incompatible fire-resistant cables, fire-resistant cables, etc. can be used.
· Cable specification selection
When determining the cable specifications (conductor cross-section), the selection conditions such as overheating, voltage loss, economic current density, and mechanical strength should usually be considered.
According to experience, low-voltage lines usually select cross-sections under heating conditions due to large loads, and then evaluate voltage losses and mechanical forces; low-voltage lighting lines, due to the need for higher voltage levels, can first select cross-sections under allowable voltage loss conditions. Before calculating the heating conditions and mechanical forces; regarding the high-voltage line, first select the cross-section of the economic current density, and then evaluate its thermal conditions and allowable voltage losses; while the high-voltage air line must also measure its mechanical forces. If the user is inexperienced, then an expert unit or individual must be contacted.
Recent News
2024-06-19
A cable is an important electrical device consisting of many wires isolated from each other, with insulating and protective skins. The main purpose of the cable is telecommunications or power supply and can be installed in the air or underwater.
2024-06-19
Protect the cable from damage: The protective coating of the cable is located on the outside of the cable insulator, and its main purpose is to protect the inner layer of the cable from mechanical damage and chemical corrosion. This helps to extend the life of the cable and ensure its stable operation under various conditions. By increasing the mechanical strength: By increasing the mechanical strength of the cable, the protective coating can increase the elasticity of the cable. This is necessary to ensure that the cable can withstand external forces during transmission to avoid damage caused by external forces.
Classification and application of cable
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The classification of cables and their applications are very extensive, involving many fields, such as electrical systems and information transmission systems. According to the application, cables can be divided into bare wire, insulation, heat insulation, shielding, electrical, controllable, cable, radio frequency, etc. Cables are mainly used in power grids, including overhead wires, wires (buses), power cables, branch cables,
Focus on cable line construction and business concerns
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The construction and operation of cable lines is an important part of power supply, and its quality and safety directly affect the reliability of the power supply system. Before cable construction, technical measures in line with the actual operation of the site shall be studied and formulated in detail, and shall not be changed without authorization. In addition, the quality of cable construction is not only related to itself, but also related to its quality. Therefore, in the construction of cable lines, relevant regulations must be strictly observed to ensure the quality of work.