According to news reports, you can learn about many major fire accidents caused by cable fires. The occurrence of these accidents has caused significant losses to life and property, and has had a negative impact on society. So what are the ways to reduce the occurrence of such a fire? Next, the cable clamp will introduce you to a component called plug-in bus duct, which effectively solves such problems. Follow me to understand how it works.

1. Convenient tapping of busbar trunking: The so-called plug-in busbar trunking uses plugging to tap the power supply of the main line to the branch line, making tapping very convenient.

The disadvantage of prefabricated branch cables is that they need to be customized to the factory; The branch connection method adopts an open "C" type clamp, can the clamping force be ensured over time? Due to the high cost of each branch head, prefabricated branch cables are still not widely used today. Any floor needs to cut off the power supply, and the bus duct does not need to be powered off. As long as the plug box of the bus duct is removed under no-load conditions, it is sufficient. But it is very dangerous to cut off the branch power of the prefabricated branch cable when operating with electricity.

2. Strong overload capacity of bus duct: The overload capacity of bus duct is strong, depending on the high working temperature of the insulation material used. The insulation material used in bus duct is made of materials with a working temperature of 105 ℃. Radiation cross-linked flame-retardant winding tape (PER) and radiation cross-linked polycarbonate heat shrink tubing with a working temperature of over 140 ℃ have been developed. The insulation material used in cables usually operates at temperatures of 95 ℃ and 105 ℃, so the overload capacity of the bus duct is much greater than that of the cable.

3. Busway can prevent overload and fire: On August 27, 2000, the Moscow Ostankino TV Tower in Russia, the second tallest building in the world and the tallest in Europe, caught fire. The reason is caused by cable overload; The shutdown of Baosteel's three converters was also caused by cable fires.

The insulation layer and outer skin of ordinary cables will burn, and flame-retardant cables will also burn under flames. They will not burn until the flames leave. Fire-retardant cables will not burn, but they are expensive. Only power sources that do not allow power outages, such as firefighting, will use fire-resistant cables.

The outer shell of the bus duct is made of steel and will not burn. Even if the insulation material of the copper bar burns, flames will not spread to the outside of the bus duct.

4. The heat dissipation performance of the bus duct is good: the insulation materials of the cable (core wire insulation and outer skin insulation) are both insulation materials and thermal insulation materials. Therefore, when laying power cables in the bridge, a maximum of 2 layers are allowed, and the reason for this is to consider heat dissipation.

The bus duct utilizes air conduction for heat dissipation and dissipates heat through a tightly connected steel casing. Therefore, compared to cables, its heat dissipation performance is evident.

5. Convenient maintenance of busbar trunking: The busbar trunking almost does not require maintenance. Daily maintenance usually involves measuring the temperature rise of the casing and through core bolts, as well as the temperature rise of the joints in the incoming box. If the through core bolts are of grade 4.8, they need to be tightened regularly. If high-strength bolts of grade 8.8 are used, they do not need to be tightened regularly.

The bus duct is very convenient for controlling the operation of branch cables, and can withstand a much higher temperature limit than ordinary cables, which has a positive effect on preventing fire. The later maintenance of the bus duct is also very simple. As mentioned earlier, it requires almost no maintenance, and various costs are relatively low. The above is an introduction to the advantages of busbar trunking, hoping to be helpful in everyone's future work. Thank you for reading!