The wire and cable products used in the power system mainly include overhead bare wires, bus bars (bus bars), power cables (plastic cables, oil-paper cables (substantially replaced by plastic power cables), rubber cables, overhead insulated cables), and branch cables. (Replaces some busbars), magnet wires, and electrical equipment, wire and cable for power equipment.
There are no strict boundaries between "wires" and "cables."
A product having a small number of cores, a small product diameter, and a simple structure is generally referred to as a wire. There is no insulated wire called bare wire, others are called cables.
Larger conductor cross-sectional areas (greater than 6 square millimeters) are called large wires, and smaller ones (less than or equal to 6 square millimeters) are called small wires, and insulated wires are also called cloth wires.
The distribution of optical cable has some aspects that need attention. It is very important for the construction personnel to understand this knowledge. The difference between fiber optic cable and cable is very large. This includes recyclable properties. Since the fiber is a fragile fiberglass, the internal space requires a strict price ratio. Therefore, if damage is caused, the repair is unrealistic.
What are the aspects that need attention when the cable is installed?
1. When loading and unloading the optical cable, use lifting equipment such as a forklift or special steps. It is strictly forbidden to directly roll or drop the cable tray from the vehicle.
2. It is forbidden to lay or stack the cable trays with optical cables. The cable trays in the compartments must be protected with wooden blocks.
3. It is not advisable to rewind the cable several times to avoid the integrity of the internal structure of the cable. Before the cable is laid, it should be inspected and checked for specifications, quantity, test length and attenuation. Each disk is attached to the panel. There is a factory inspection certificate (should be kept in a safe place for future reference), and be careful not to damage the cable when removing the cable guard.
4. During the construction process, it should be noted that the bending radius of the optical cable should not be less than the construction regulations, and the optical cable is not allowed to be excessively bent.
5, the overhead optical cable should be pulled through the pulley, the overhead optical cable to avoid friction with buildings, trees and other facilities, to avoid mopping the floor or rubbing with other sharp hard objects to damage the cable sheath, and if necessary, install protective measures. It is forbidden to forcibly pull the cable out of the pulley to prevent the cable from being crushed and damaged.