4000A dense busbar

CMC-2A-4000A dense busbarSuitable for AC three-phase four wire and three-phase five wire systems, with a frequency of 50-60Hz, rated voltage up to 690V, and rated working current of 250-5000A for power supply and distribution systems. As an auxiliary equipment for power supply and distribution equipment in industrial, mining, enterprise, and high-rise buildings, it is particularly suitable for the renovation of workshops and old enterprises.

CMC-2A-4000A dense busbarIt is a compact sandwich structure, and the bus duct uses high-quality electrolytic copper with a copper content of over 99.95% as the conductor. After processing, it is coated with high-quality insulation material, which is flame retardant and has good insulation performance.

The overall shell also serves as a PE wire, with low reactance, good continuity of protection circuit, safe and reliable, and energy-saving. Its characteristics include good dynamic and thermal stability, small size, good heat dissipation, low temperature rise, space saving, low voltage drop, and reduced energy loss, suitable for the transmission of high-power currents. Dense insulation plug-in bus duct. Its moisture-proof and heat dissipation effects are poor. In terms of moisture prevention, the busbar is prone to moisture and water leakage during construction, causing a decrease in insulation resistance between phases.

The heat dissipation of the busbar mainly relies on the shell. Due to the compact arrangement and installation between wires, the heat dissipation of L2 and L3 phases is slow, resulting in a high temperature rise in the busbar duct. The dense insulation plug-in bus duct is limited by the shell plate and can only produce horizontal sections no larger than 3m. Due to the small air gap between the busbars, when the busbars pass through high currents, they generate * electric force, causing the magnetic oscillation frequency to form a superimposed state and resulting in excessive noise.

Characteristics of dense bus duct structure:

1In terms of performance
The busbar adopts copper or aluminum bars, which have high current density, low resistance, and small skin effect, and do not require derating. A small voltage drop also means low energy loss, ultimately saving users' investment. For cables, due to the fact that the cable core is made of multiple thin copper wires, its root area is larger than that of busbars of the same current level. And its "skin effect" is severe, reducing the rated current, increasing voltage drop, and making it easy to generate heat. The energy loss of the circuit is high and it is prone to aging.
2. Security
The metal enclosed shell of the busbar duct can protect the busbar from mechanical or animal damage. It is safe to install it using plug-in units in the distribution system. The shell can be grounded as a whole, and the grounding is very reliable. However, the PVC shell of the cable is susceptible to mechanical and animal damage. When installing the cable, the power must be cut off first. If there is an error, it will be very dangerous, especially if the cable needs to be grounded on site. The unreliable grounding increases the risk.
3. Installation aspect
The busbar is composed of many sections, each of which is short and light in length. Therefore, only a few people are needed to quickly complete the installation. There are many standard parts and inventory for busbars, which can be shipped quickly and save on-site work time. Its tight "sandwich" structure can reduce electrical space, freeing up more space for commercial purposes such as renting or as public spaces. For installing cables, it is a difficult task. Because a single cable is often heavy, installation work requires the cooperation of many people and takes a lot of time to complete. In addition, due to the bending radius of the cable, more installation space is required.
4. Route optimization
By using bus ducts, we can merge certain branch circuits and convert them into a large bus duct using plug-in boxes. It can simplify the electrical system and obtain lower current values for more wires. Therefore, it saves the cost of the project and is easy to maintain. For traditional cable lines, cables make the electrical system extremely complex, large, and difficult to maintain, which wastes engineering costs and installation space.
5. Scalability
For dense bus ducts, system expansion can be achieved by adding or changing several segments, resulting in a high reuse rate. In most cases, cables cannot be reused because their length and route are different. If we want to expand the system, we need to purchase new cables to replace the old ones.
6. Plug in switch box
Plug in switch box can be used with air type bus duct. No additional accessories are required during installation. The plug-in pin is an important component, which is made of copper alloy stamping, heat treated to enhance elasticity, and tin plated on the surface. Even if it is plugged in more than 200 times, it can still maintain stable contact ability. The box is equipped with a grounding point to ensure reliable grounding, and a switch circuit is installed inside the box. A plastic shell circuit breaker is used to provide overload and short-circuit protection for the capacity of the tapped lines.

Technical characteristics of dense busbar trunking

Plug in bus duct is an AC three-phase four wire or five wire system, suitable for power supply and distribution with a frequency of 50-60Hz, a rated current of 630A-5000A, and a rated voltage below 660V. It is particularly suitable for low-voltage distribution systems in industrial plants, mines, high-rise commercial and residential buildings, hotels, hospitals, and other power supply systems.

1In terms of performance
The busbar adopts copper or aluminum bars, which have high current density, low resistance, and small skin effect, and do not require derating. A small voltage drop also means low energy loss, ultimately saving users' investment. For cables, due to the fact that the cable core is made of multiple thin copper wires, its root area is larger than that of busbars of the same current level. And its "skin effect" is severe, reducing the rated current, increasing voltage drop, and making it easy to generate heat. The energy loss of the circuit is high and it is prone to aging.
2. Security
The metal enclosed shell of the busbar duct can protect the busbar from mechanical or animal damage. It is safe to install it using plug-in units in the distribution system. The shell can be grounded as a whole, and the grounding is very reliable. However, the PVC shell of the cable is susceptible to mechanical and animal damage. When installing the cable, the power must be cut off first. If there is an error, it will be very dangerous, especially if the cable needs to be grounded on site. The unreliable grounding increases the risk.
3. Installation aspect
The busbar is composed of many sections, each of which is short and light in length. Therefore, only a few people are needed to quickly complete the installation. There are many standard parts and inventory for busbars, which can be shipped quickly and save on-site work time. Its tight "sandwich" structure can reduce electrical space, freeing up more space for commercial purposes such as renting or as public spaces. For installing cables, it is a difficult task. Because a single cable is often heavy, installation work requires the cooperation of many people and takes a lot of time to complete. In addition, due to the bending radius of the cable, more installation space is required.
4. Route optimization
By using bus ducts, we can merge certain branch circuits and convert them into a large bus duct using plug-in boxes. It can simplify the electrical system and obtain lower current values for more wires. Therefore, it saves the cost of the project and is easy to maintain. For traditional cable lines, cables make the electrical system extremely complex, large, and difficult to maintain, which wastes engineering costs and installation space.
5. Scalability
For busbars, system expansion can be achieved by adding or changing several segments, resulting in a high reuse rate. In most cases, cables cannot be reused because their length and route are different. If we want to expand the system, we need to purchase new cables to replace the old ones.
6. Plug in switch box
Plug in switch box can be used with air type bus duct. No additional accessories are required during installation. The plug-in pin is an important component, which is made of copper alloy stamping, heat treated to enhance elasticity, and tin plated on the surface. Even if it is plugged in more than 200 times, it can still maintain stable contact ability. The box is equipped with a grounding point to ensure reliable grounding, and a switch circuit is installed inside the box. A plastic shell circuit breaker is used to provide overload and short-circuit protection for the capacity of the tapped lines.

Main technical parameters of dense bus duct

1Usage conditions for dense busbar trunking
ambient temperature
Upper limit:+40 ℃
Lower limit: -25 ℃
Altitude: below 2000m
humidity
The relative humidity should not exceed 50% at a high temperature of+40 ℃; When the temperature is low, it is allowed to have
Higher relative humidity
Condensation conditions: Yes
Basic seismic intensity: 6 degrees for fortification
Installation location: indoor, outdoor
2. Insulation resistance: The insulation resistance value of each enclosed busbar unit should be greater than or equal to 100M Ω (2500V megohmmeter).
3Dielectric strength: Each section of the enclosed busbar undergoes a 1-minute power frequency dry test voltage withstand test before leaving the factory.
The power frequency withstand voltage and lightning impulse withstand voltage values comply with national standards.
4Grounding system: Complies with the requirements of IEC364-5-54 for grounding systems.
5Protection level: Indoor type: IP40; Outdoor type: IP43, IP55.
6Load performance: Under rated current, the temperature rise of the casing meets the requirements of GB763-90 "Heating during Long term Operation of AC High Voltage Electrical Appliances" standard.
7Short circuit performance: The dynamic and thermal stability test meets the requirements of GB2706-89 "Test Method for Dynamic and Thermal Stability of AC High Voltage Electrical Appliances" standard.

XPnR-HThe series of single pole combination sliding wires are composed of H-shaped aluminum alloy body guide rail pressurized V-shaped stainless steel sliding joint, PVC insulated shell, external current collector, and suspension, fixing and other components. This product is widely used in situations with high current, high frequency of use, fast operating speed, and poor environmental conditions due to its innovative design, reasonable structure, easy maintenance, and safe use.

Multi pole safety sliding line

HXTS、 The HXTL series multipole tube sliding contact wire is composed of high-strength engineering plastic insulated conduit or aluminum alloy protective shell, multi-stage conductive copper bars, current collectors, and components such as suspension and fixation. This product is widely used in logistics automation production lines and testing lines with low current and high frequency of use due to its compact design, stable performance, and safe use.

FKCIntroduction to high current enclosed busbar trunking products

FKCThe (CFW, KFM) type bus duct is a new type of bus duct that is improved on the basis of the CFW-2A enclosed bus duct and the CMC dense bus duct. It combines the advantages of the two main bus ducts and has been further improved. The protection level reaches IP54.

FKCThe high current enclosed bus duct meets the following standards:

GB7251.1Department of Low Voltage Switchgear and Control Equipment: Type Testing and Part of Type Testing Equipment

GB725.1.1Low voltage switchgear and control equipment - Part 2: Special requirements for busbar trunking systems (busways)

Industry standard JB/T9662-1999 "Dense Insulated Busbar Trunk System (Dense Insulated Busbar Duct)" of the Ministry of Machinery

Construction Machinery Association NEMABU1.1 "Installation and Maintenance Standards for Busway"

High voltage busbar GB/T8349-2000 "Metal enclosed busbar"

FKCDesign characteristics of high current enclosed busbar trunking:

1、 FKC type bus duct is a new type of bus duct that has been improved on the basis of similar products in the traditional CMC series.

2Single bolt clamping terminal: The busbar trunking design adopts * single bolt clamping terminal, which is a busbar trunking unit connector. Due to its special structure, it can prevent incorrect operation during installation. At the same time, as long as one bolt is tightened, two busbar trunking units can be reliably and quickly connected.

3High protection level socket: The bus duct is designed with a safety protection baffle at the socket, and the plug-in box can only be inserted when the baffle is opened. When the socket is not in use, the protective plate can be closed and sealed with lead to prevent dust and foreign objects from entering at the socket, thereby improving the protection performance of the bus duct, preventing misoperation, and enhancing the safety of the bus duct.

4Number of shell (protective shell) levels: The bus duct is designed with 5 current levels and only 3 levels of shells are used. This way, when the system changes capacity according to adjacent levels, the bus duct does not need to replace the shell. For example, when 400A changes to 630A, the shell size is the same, which greatly facilitates installation and subsequent changes.

5Large transmission of electrical energy: The design of the bus duct is separated by air insulation, which improves the heat dissipation of the bus duct, reduces impedance, and achieves optimal and economical transmission of the bus duct.

6Good completeness: The busbar trunking is designed with various functional linking units, which can meet the needs of all power distribution projects, especially suitable for high current power distribution in factories, residential buildings, and commercial buildings.

7High strength: The outer shell of the bus duct is formed by a one-time molding unit with concave convex corrugated structure, and there are composite partitions assembled and tightened inside, which has a frame structure mechanics and greatly improves the support strength.

8Its advantages include good heat dissipation, high current carrying capacity, high waterproofing, long service life, low power consumption, and strong support strength.

FKCParameters of high current enclosed bus duct: