How much do you know about cable problems?
Speaking of cables, I believe everyone is very familiar with them. We all know that cables are power conductors, and that cables are composed of several or several wires (i.e. conductors) and an insulating outer protective layer that are combined to form a rope-like shape. Cables, as transmission lines in power systems, are used to transmit electricity generated by power plants, substations or distribution stations to users in different locations for use by power consumers. The conductivity and electrical properties of cables have an important impact on the efficiency and quality of power transmission. Cables are widely used in various electrical engineering and electronic equipment for transmitting electrical energy, signals, data, etc. Different wires and cables are suitable for different application scenarios and requirements, such as power supply, lighting systems, communication networks, industrial control systems, household appliances, etc. Here are some common questions about cables.
1. What types of wires and cables can be divided into according to their uses? According to their uses, they can be divided into bare wires, insulated wires, heat-resistant wires, shielded wires, power cables, control cables, communication cables, radio frequency cables, etc. Commonly used wires and cables can be divided into the following types according to their uses: power cables, communication cables, control cables, electric heating cables, automotive cables, and ship cables. In short, there are many types of wires and cables. According to different uses and application environments, it is necessary to select suitable cable types to ensure the normal operation and safe use of electrical equipment.
2. What types of insulated wires are there? Common insulated wires are as follows: polyvinyl chloride insulated wires, polyvinyl chloride insulated soft wires, nitrile polyvinyl chloride mixture insulated soft wires, rubber insulated wires, agricultural underground direct buried aluminum core plastic insulated wires, rubber insulated cotton yarn textile soft wires, polyvinyl chloride insulated nylon sheathed wires, polyvinyl chloride insulated soft wires for power and lighting, etc. What occasions are cable trays suitable for? Cable trays are a type of equipment used to support and protect cables, and are widely used in various fields such as buildings, factories, and public facilities. They play a key role in protecting and managing cables. By using cable trays, we can ensure that cable wiring is neat and orderly, improve the safety and reliability of equipment, reduce failure and maintenance time, and provide efficient cable management solutions for various places.
3. What are the regulations when selecting the cross-section of power cables? The selection of power cables should follow the following principles: (1) The rated voltage of the cable should be greater than or equal to the rated voltage of the power supply system at the installation point; (2) The continuous allowable current of the cable should be equal to or greater than the maximum continuous current of the power supply load; (3) The cross-section of the wire core should meet the stability requirements of the power supply system during short circuit; (4) Check whether the voltage drop meets the requirements based on the cable length; (5) The minimum short-circuit current at the end of the line should enable the protection device to operate reliably.
The above are several common cable problems shared with you, I hope they can be of some help to you.
