BMC-500A insulated air type bus duct

BMC-500A insulated air type bus duct

Product Features

1. This product is a flameproof structure, with a welded steel plate shell and a surface coated with electrostatic spraying;

2. Equipped with high breaking miniature circuit breakers or molded case circuit breakers, AC vacuum contactors, motor protectors, voltmeters and other components, it has overload, short circuit, undervoltage, phase loss, leakage and other protection functions.

3. Both incoming and outgoing lines are equipped with spark free explosion-proof plug-in devices, and have clear equipment tag number indicator boards. The indicator boards are made of 304 stainless steel plates bent and polished, with a beautiful, elegant and practical appearance.

4. The explosion-proof surface adopts special processing methods, embedded with oil resistant aging silicone "0" - shaped sealing rings, to achieve a protection level of IP65 for the box body, in order to solve the problem of rainwater entering the traditional explosion-proof box for outdoor use, and to eliminate the complex and ineffective measures of traditional rainproof covers.

5. All fasteners are made of corrosion-resistant 304 stainless steel fasteners.

6. Specific functions and appearance can be customized according to user requirements.

The bolts used for cross connection should be galvanized, and the contact between the cross connection wire terminal and the enclosed bus duct should be coated with both insulation coating and rust proof conductive paste. Or entrust the manufacturing plant to weld copper washers on the enclosed bus ducts to ensure reliable cross connections between the enclosed bus ducts. When the enclosed bus duct passes through the deformation joint and straight section of the building for more than 30 meters, a compensation device should be installed. Soft copper wires should be used to cross the two ends of the enclosed bus duct, and there should be expansion allowance. If the design requires the enclosed bus duct to be part of the grounding main line, the connection resistance at the joint should not exceed 0.00033 Ω.

Features:

1. The shell is made of flame-retardant ABS material, which meets the standards of electrical products.

2. The rollers are made of high-strength wear-resistant materials, and the side wheels protect the neck from easy wear and tear.

3. According to theoretical calculations, the roller speed can reach over 600 revolutions per minute, so a flat oil bearing is used, which is dustproof, wear-resistant, and not easily stuck, and has flexible movement.

4. The elasticity of the alarm carbon brush in the product is slightly higher than others, with the aim of sacrificing a small amount of effective wear to achieve early conduction and prevent false alarms.

5. Music sound, light emission, communication contactor.

6. The external structure has strong universality and comes in multiple models, which can be used with the widely used flat foot tube, high-low foot tube, plastic tube, and aluminum alloy tube sliding contact wire in China. As long as the 'N' wire (neutral wire, also known as 0 wire) is connected, there is no need to replace others.

BMC-500A insulated air type bus duct

Structural features:

1) This series of enclosed busbar trunking has excellent short-circuit resistance performance. Due to the protection of the aluminum (or weak magnetic steel plate) shell, it can effectively reduce the structural heating caused by eddy currents or circulating currents, lower the temperature of the enclosed busbar shell, reduce electrical energy loss, increase current carrying capacity, and reduce electric force.

2) This series of enclosed busbar trunking structures is advanced, and installation and maintenance holes can be freely set at the upper or lower part of the enclosed busbar. For high current indoor enclosed busbars, ventilation louvers are installed on both sides and the lower part of the shell to enhance heat dissipation and reduce temperature rise.

3) The use of double insulation and multi-point connection grounding of the shell significantly reduces maintenance workload and improves safety performance.

4) The use of corrugated pipe expansion joints is simple to install and allows for adjustment of two degrees of freedom in both horizontal and vertical directions. It not only meets the expansion and contraction requirements caused by different temperature drops and thermal expansion and contraction, but also compensates for errors caused by foundation settlement, solving the problems of poor protection level, inconvenient installation, and unreliable operation of traditional sliding plate expansion and contraction devices.

5) In order to solve the negative impact of vibration generated during the operation of transformers, generators, and distribution cabinets on the enclosed busbar, soft connections or copper braided tapes are used outside their connection with the enclosed busbar, and rubber pads are added between the shells to reduce vibration; For the enclosed busbar trunking body, shock absorbers are installed in the system to provide elastic support for the ceramic flat and conductive bars, effectively avoiding mechanical vibrations and seismic waves caused by the shell from damaging the enclosed busbar.

6) The heat transfer of enclosed bus ducts mainly relies on thermal radiation. In order to make good use of thermal radiation, light gray paint is sprayed on the outer surface of the enclosed bus to reduce the absorption of visible light; Spray black paint on the inner surface of the enclosed busbar to enhance the radiation of internal heat to the shell and prevent corona.

7) In order to avoid accidental condensation caused by temperature changes outdoors and indoors in winter, KFM separates insulated busbars and sets up through wall sleeves at the through wall locations to enclose the busbars outdoors and indoorsWhen installed vertically, the flange is inside, and when installed horizontally, the flange is outside.

8) In order to improve the allowable operating temperature rise of the enclosed busbar trunking, prevent electrolytic corrosion of the joints in coastal open air and severe electrochemical corrosion atmosphere, and reduce contact resistance, all joints with a current greater than or equal to 3000A of the enclosed busbar are treated with silver plating, so that the allowable temperature rise of the joints can be increased to 65K, which is much higher than the temperature rise during normal operation.

(1) The current capacity can be very large.

(2) The voltage drop is very small.

(3) Strong short-circuit load capacity.

(4) High reliability and long service life.

(5)安全性高。

(6) Small external dimensions.

(7) Lightweight and easy to operate.

(8) Construction and inspection are simple.

(9) The equipment of the power distribution system can be added or changed freely.

For bus ducts used in different fields, our product specifications and other requirements naturally vary, so that we can better purchase according to our actual needs. If there are high requirements for corrosion resistance in certain application fields, then we naturally need to consider these performance parameters; For some fields with special requirements for high temperature conditions, such as air insulated bus ducts, we can choose bus ducts with more emphasis on technology in high temperature resistance, so that they can be more suitable for our practical applications.