According to the requirements of the relevant specifications, the placement method of the three-phase busbar can be roughly divided into two kinds according to the model of the low-voltage distribution cabinet and the different manufacturers: the horizontal placement and the placement of the down wire, according to the placement order as shown in Figure 1. From the front of the cabinet, the horizontal placement is N, L3, L2, L1 from the early years to the back. From left to right, the placement of the down leads is LI, L2, L3, and N.
On the other hand, as we all know, the low-voltage bushing of the transformer is placed in the order of N, L1, L2, L3, and the transformer is installed in the transformer room according to the design requirements, generally the high-voltage side is inward, and the low-voltage side is outward. When the incoming bus of the low-voltage distribution cabinet adopts the horizontal placement, the bus duct does not have to be commutated between the bus duct and the transformer, only the transition splice can be added, but when the inlet bus of the low-voltage distribution cabinet adopts the lead-down placement, because the bus duct can not be directly used as the low-voltage incoming line to connect the transformer and the low-voltage distribution cabinet due to the different phases, so the bus duct must be connected through the commutation. The method is: it can be connected by the bus duct commutation section method, or the incoming auxiliary box can be used (which can be installed on the top of the cabinet, and the bus transposition in the box (generally the zero bus transposition) can be reached to the two ends of the bus duct The equipment is correctly connected with the phase.
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Busway installation method - Wiener
1. Busway horizontal device, the interval between the two brackets is ≯2500mm, and the interval between straight devices is ≯3600mm;
2. When the device bracket is straight, it should be drilled with the channel side plate and fastened with M6-M8 bolts.
3. In the process of installation construction, priority should be given to the power supply system, ...
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Application advantages of industrial busway - Wiener
1. It has a modern beauty;
2. Small dimensions;
3. Strong and light weight, simple operation;
4. The connection is very simple (just like connecting water pipes, connecting sections through tees, elbows and other joints to make them into a system;
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The advantages of low-voltage closed busbar system without punching connections
1. Save space. The components are attached to the busbar, which can save 1/3 of the size of the box transformer.
2. Operation**. The busbars are placed behind the components, and the upper and lower plates can be sealed to prevent touch protection.
3. Improve the stability and reliability of operation, improve the dynamic and thermal stability, and the bus bar is not perforated.
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Common Bus Application Considerations – Wiener
In the common DC bus system of multiple inverters, especially the common DC bus of inverters of different power levels, it is very important that the connection between the bus bars is maintained by fuses. When one of the inverter power equipment in the common bus is damaged by short circuit breakdown, the other inverter bus ...
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Wiener busway plug-in box wiring method
The bus duct bracket has to be firmly installed, and the bus duct should be correctly placed according to the segment sequence number, phase sequence, number, direction and device mark, and when the sections are connected, the adjacent section of the bus duct should be aligned, and the conductor and shell of the bus duct should not accept mechanical stress after the connection.
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Precautions for installation of Wiener busway
1. Before the bus duct installation, it should be ensured that the electrical shaft, substation and distribution room, the decoration project of the place through which the bus duct passes, and the heating and ventilation project are all completed to ensure that the bus duct is not polluted. The reserved holes and embedded parts of the floor and wall should be embedded and reserved according to the position required by the design. The functions of the busway are single ...
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Conductor and bus welding requirements - Wiener
1. Before welding, it is necessary to check whether the welding equipment is defective, whether the grounding of the electrical equipment is reliable, and strictly abide by the "welder safety operation procedures" when welding.
2. Correct wires and busbars, and prohibit the use of handleless files.
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The importance of room power supply and busbar system – Vernal
In today's information society, the computer room is a very common equipment, so the most important thing in a computer room is the bus system, which is the center and skeleton of the power distribution of the entire computer room. Then a reasonable bus system will greatly improve the efficiency of the computer room. So how do you optimize ...
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What are the characteristics of the bus wiring method of the power system?
(1) Single bus wiring. Single bus wiring has the advantages of simplicity and clarity, less equipment, less investment, and convenient operation and expansion, but its reliability and activity are poor. When the bus or bus separator is faulty or overhauled, all power to the bus must be disconnected.
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The main components of the Wiener bus system in the distribution cabinet are composed
(1) Busbar
It is the basic element of the bus system, and there are a variety of standards, which can be installed with 5mm or 10mm thick rectangular busbar, double T type and triple T type busbar. The busbar is divided into 1-4 wires, 1 wire can be used with N or PE, 2 wires can be used together with N and PE, 3 wires are two-phase, and 4 wires can be used for three-phase ...
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The advantage of closed busbar over open busbar is Wiener
1) Closing the bus duct can reduce the grounding fault, prevent the short circuit between the phases, and fundamentally eliminate the grounding fault caused by external moisture, dust and foreign objects, and improve the continuity of generator operation.
2) Eliminate the surrounding ...
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Introduction to several power supply systems – Wienal
At present, China has five power supply systems: IT, TT, TN-c, TN-c-s and TN-S. They have their own advantages and disadvantages, and we should choose sensitively according to the actual situation in life.
Five power supply systems
1.IT power supply system
In a ...
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The main components of the Wiener bus system in the distribution cabinet are composed
The Wiener bus system is divided into 40mm, 60mm, 100mm and 185mm systems according to the upper and lower spacing between the copper bars, and the ship unloader distribution cabinet mainly adopts a 60mm rectangular bus system. This is shown in the figure below. The 60mm system provides maximum operating space and maximum current with its smallest external size.
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The advantages of busway are used in cable tray installations
At the time of the cable tray installation, the wiring is not very convenient. This phenomenon can be avoided by using busway. The 5 advantages of using busway in the cable tray device are as follows:
1. Convenient connection of bus duct: the so-called plug-in bus...
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The advantage of intelligent energy-saving dense busway - Wiener
Intelligent, energy-saving, dense busway, it is capable of generating outward electromagnetic wave radiation. It can be said that the line loss in the process of power transmission is greatly reduced, which can save energy and reduce electromagnetic radiation pollution. In addition, the product is also specially equipped with a radiator, which increases the heat dissipation area of the conductive bar and accelerates the ...
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220V DC Hazard of Bus System – Wiener
The grounding of the DC system should include two situations: the one-point grounding of the DC system and the two-point grounding of the DC system.
In the DC system, the positive and negative poles of the DC are insulated from the ground, and when the ground of one pole is generated, there is no grounding current due to the fact that there is no grounding current.
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Busway installation method - Wiener
1. Busway horizontal device, the interval between the two brackets is ≯2500mm, and the interval between straight devices is ≯3600mm;
2. When the device bracket is straight, it should be drilled with the channel side plate and fastened with M6-M8 bolts.
3. In the process of installation construction, priority should be given to the power supply system, ...
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Advantages of installing cable trays with busway – Wiener
When it comes to cable tray installation, wiring is not very convenient. This phenomenon can be avoided by using busway. The 5 advantages of using busway in the cable tray device are as follows:
1. Convenient connection of bus duct: the so-called plug-in bus duct, fireproof bridge is the way it uses plugged in.
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Precautions for the installation of explosion-proof distribution boxes - Vernal
The protection level mark of explosion-proof distribution box is the protection level of IP products that we often mention, which has two parameters, one represents the level of avoiding foreign objects from entering the shell, and the second represents the level of waterproof entering the shell.
Installation of explosion-proof ...
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Considerations for purchasing a busbar system – Wiener
The bus system plays a very important role in the practice of construction, and for products such as the bus system, the relevant items can not be ignored, so that we can better use the practical value of this type of product. Generally speaking, when we are purchasing a bus system ...
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