What are the performance advantages of busbar?

With the progress of the times, the requirements of all walks of life are also getting higher and higher. The rapid development of modern industry, the demand for electricity distribution industry increases rapidly, the busbar came into being, its compact appearance, convenient installation and production advantages, it can lead to two times using the characteristics of popular and trust of consumers.
With the advent of the bus slot, in order to keep up with the pace of the times, but also made some optimization, people want to know more about it, we will briefly introduce the performance advantages of the next bus slot.
1 busbar with good heat dissipation. Insulating material (cable core insulation and sheath insulation) is insulation, and insulation materials, so the power cables in the bridge laying, laying up to allow the 2 layers, the reason is considering heat. The bus slot uses air to conduct heat dissipation, and through the close contact with the steel shell, the heat is released, so its heat dissipation performance and cable, the cable heat dissipation performance is obvious.
2 bus slot almost no maintenance, daily maintenance is usually in line box, shell and core wear rise measurement temperature and temperature rise of joint bolt, bolt wear when using 4.8 stages, require regular fastening, if using high-strength bolts of grade 8.8 are not regularly strong. The cable is easy to wear due to its material, easy to aging, short life and other factors, the need for regular inspection and maintenance, or even replacement
3 load current range. The maximum cable can only do cross-sectional area of the 1000mm, rated current 1600A, but this large size cable because of volume and weight is too large and little practical application engineering. Engineering usually use 400 mm and below distribution cable specifications, which requires a lot of cables and power supply and busbar rated. The maximum current can do 6300A, the current carrying capacity of cable is powerful simply can not match.
4 busbar overload capacity. It depends on the use of insulating materials with high working temperature, insulating material for busbar through the support by the working temperature of 105 DEG C material, has developed a working temperature is above 140 DEG C radiation crosslinking flame retardant wrapping tape (PER) and radiation crosslinked poly hydrocarbon thermal shrinkage pipe. The insulation material used in the cable is working at a temperature of 95 DEG C and about 105 DEG C, so the overload capacity of the busbar is much larger than that of the cable.
5 bus slot convenient connection. The so-called plug type bus slot, it is the use of the way to connect the main line of the power supply to the feeder line, every few meters on the left side of the box, so it is very convenient. The cable need to tap in the field, poor reliability, even if the prefabricated branch cable is especially obvious shortcomings, mainly to the factory, the branch connection with the opening of the "C" type hoop, a long time, can guarantee the hoop stress? Coupled with the price of each branch head is not cheap, so the prefabricated branch cable is still not widely used. Any floor need to cut off the power supply, no need to cut off the bus slot, as long as in the case of no load, remove the busbar slot box can be. However, it is very dangerous to cut off the branch power of the prefabricated branch cable.
6 bus slot can prevent the overload of fire.2000 in August 27th, the dogged by bad luck Moscow Ostankino tower -- the first high-rise second in the world, Europe was in towering flames. The reason is that the cable overload caused by Baosteel three converter shutdown, but also caused by cable fire. The insulating layer and the skin will burn ordinary cable, flame retardant cable will burn under the flame, only in the left after the flame is not burning, fire will not burn, but the price is expensive, the power only allowed to use the power of fire resistant cable. A casing is metal, not burning, even if insulation copper combustion occurs, the flames will not flee to the outside bus slot.