There are many advantages of using plug-in busway, such as being able to guard against overload, fire alarm, convenient maintenance, convenient tap, etc. Let the busway manufacturers analyze it for you:
Why do you choose more plug-in bus ducts in engineering?
1. The overload capacity of the busbar is strong: the overload capacity of the busbar is strong, which depends on the high working temperature of the insulating material used for it. The insulating material used for the busbar is overloaded with materials with a working temperature of 105 °C. It has been developed to work at a temperature of 140 Radiation cross-linked flame retardant coiled tape (PER) above ℃ and radiation cross-linked polyhydrocarbon heat shrinkable tube. The long-term working temperature of the insulating material used in the cable is generally 95 ° C and 105 ° C, so the overload capacity of the busbar is far greater than that of the cable.
2. Can the busway be alerted to overload? Fire alarm: The insulation layer and outer skin of the shallow cable will burn, and the flame-retardant cable will also burn under the flame. It only needs to be separated after the flame is separated. Fire-resistant cables are only used for power sources that are not allowed to power outages such as firefighting. The outer casing of the busway is made of steel and will not burn. Even if the insulating material of the copper bar burns, the flames will not reach the surface of the busway.
3. The heat dissipation performance of the bus duct is good: the insulating material of the cable (core wire insulation and outer skin insulation) is both an insulating material and a heat insulating material. Therefore, when the power cable is laid in the bridge, a maximum of 2 layers can be laid. The reason for this is to think about heat dissipation. . The busway uses air conduction to dissipate heat, and distributes the heat through the precision-contact steel casing, so its heat dissipation efficiency is comparable to that of the cable, and the heat dissipation efficiency of the cable is evident.
5. The maintenance of the busway is convenient: the busway almost does not need to be maintained. The usual maintenance is to measure the temperature rise of the casing and the grommet, and the temperature rise of the inlet box. If the grommet is 4.8, it needs to be tightened on time. If the high-strength bolts of grade 8.8 are used, they do not need to be fixed on time.
6. The busbar is convenient for tapping: the so-called plug-in busbar is that it uses the step of plugging to tap the power supply of the main line to the branch line, so the tapping is very convenient.
The disadvantage of the prefabricated branch cable is that it needs to be customized to the factory; its branch connection method adopts the open "C" type hoop. After a long time, can the hoop force be guaranteed? In addition, the price of each branch head is expensive, so prefabricated branch cables are still not widely used. If any floor needs to cut off the power supply, the busway does not need to be powered off. It is only necessary to remove the plug box of the busway in an unloaded environment. However, it is very dangerous to cut off the branch power supply of the prefabricated branch cable and operate in a live environment.