(1) Air-type busway
Since the mid-50s of the last century, represented by Beijing Baizhifang Airport Electrical Appliance Factory, the conductive row has been supported in the shell with insulating liner and insulated by air medium. The phase-to-phase distance is 50mm.
(2) Dense busway
At the beginning of the intensive mid-80s of the last century, represented by Zunyi Long March Electrical Control Equipment Factory, the conductive bars were covered with insulating materials and then fastened together with both sides. Insulation material: PTFE tape, working temperature 200 degrees, defective high-temperature differentiation of lethal toxic gas (octafluoroisobutylene and fluoropsgene) PVC heat shrinkable tube, the quality difference is great, some manufacturers choose cheap products, the measured insulation can not reach grade B. The irradiation cross-linked flame retardant winding tape (PER) has a good working temperature, good waterproof function, elasticity, and tight wrapping. A special form of busbar that occurred in the evolution of the second-generation bus, that is, the dense busbar air socket. Due to the change of process, it has fundamentally become a dense busbar dense socket, that is, a whole dense busway.
(3) Composite insulated bus duct
In addition to the insulating layer of the conductive row itself, there is also a certain amount of air dielectric insulation between the phase wires. Vulcanization insulation skills are used in various elbows. MT-7-3 rubber sleeve is used for the straight section. Vulcanization insulation skills: The material is CZ260 fast-curing insulating powder, which is cured by quaternary cross-linking, and there is no gap between the insulation layer and the conductive row. Its heat dissipation function, moisture-proof function, and reliable insulation function are all excellent. However, due to the higher cost than the second-generation bus, it has not been widely promoted.
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Wiener's built-in current transformer
Thanks to the precisely developed housing size, current transformers can now be integrated into all major products in a very space-saving way, such as:
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Difference Between Fuse and Circuit Breaker – Vernal
The principle of the fuse is to use the current to flow through the conductor to heat the conductor, and the conductor is ablated after reaching the melting point of the conductor, so the electrical appliances and circuits used for circuit maintenance are not burned out. It is an accumulation of heat, so it is also able to complete overload maintenance. Once...
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Closed busway essentials – Wiener
Before the closed busway device, it should be ensured that the electrical shaft, the transformer and distribution room, the decoration project of the place through which the busway passes, and the heating and ventilation project are all completed to ensure that the closed busway 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.
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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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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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Phase of the busway in the low-voltage incoming line – Wiener
According to the requirements of the relevant specifications, the placement 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: horizontal placement and placement of the down wire, according to the order of placement.
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Detailed explanation of Wiener DC bus
1. Three-phase AC power supply inlet
The power input of each inverter is connected in parallel on the same AC bus, and the power phase of the input end of each inverter is ensured. The circuit breaker QF is the incoming line protection device for each inverter. LR is an incoming reactor, when multiple inverters are operating in the same environment.
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Busbar system in detail – Vernal
1. In the 60mm bus system, the square fuse type blocking switch can be directly hooked.
2. The 60mm bus system refers to the three-wire or four-wire bus spacing of 60mm.
3. Strip NH-fuse type load barrier switch with scale 00 ...
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The advantage of busway over cable in construction - Wienal
Modern power supply lines play a very important role like the aorta of the human body, and if something goes wrong, it can have serious consequences. Before the 80s of the 20th century, many stable cables were used in modern construction. With the rapid development of the city, the power load of the building ...
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Advantages of common DC bus - Wiener
1. Energy saving: The energy fed back when the motor brakes can be used, so it is more energy-saving, especially for oilfield kowtow machines, cranes and other lifting equipment.
2. The power element of the equipment is high: because the motor can feed back energy, the reactive power loss is small, so the power of the equipment ...
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The Wiener bus system is reliable
The bus refers to the connection of voltage distribution devices at all levels in the substation, as well as the connection of electrical equipment such as transformers and corresponding distribution devices. The role of the busbar is to gather, distribute and transmit electrical energy.
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Introduction to the components of the busway - Vernal
Busway is a conductive equipment used for current transmission, and now the higher the building is built, the more the application of busway is required, and in many large foremen, the use of busway is also very economical and reasonable. Any machine is made up of different parts, then the busway is made up of ...
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How to choose the right fuse - Wiener
1. Select the type of fuse according to the line requirements and installation conditions. Circuits with small capacity are semi-enclosed or enclosed without fillers; The selection of large short-circuit current has a packing closed type; Semiconductor component maintenance selection of quick fuses.
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Fuse selection method - Wiener busbar
1. Select the model of the fuse according to the circuit requirements and device conditions. Circuits with small capacity are semi-enclosed or enclosed without fillers; The selection of large short-circuit current has a packing closed type; Semiconductor component maintenance selection of quick fuses.
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What is the Wiener bus system
The Wiener bus system is a standardized system for bus spacing, which is used in low-voltage power supply and distribution switchgear, so that the bus can both conduct electricity and support electrical components. The system is divided into 40, 60, 100 and 185mm systems.
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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 advantage of busway over cable in modern construction - Wiener
The power supply trunk of modern buildings plays a very important role like the aorta of the human body, and if something goes wrong, it can cause serious consequences. In the 80s of the 20th century, many stable cables were used in modern buildings. With the rapid development of the city, the power load of the building ...
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220V DC Hazard in Busbar System – Wiener
The grounding of the DC system should include two conditions: 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 DC are insulated from the ground, and they do not cause any harm when generating a ground current because there is no path to constitute a grounding current, but the ground of one pole is long.
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Strip Switch vs. Disconnector Circuit Breaker Comparison – Wiener
Bar switches are different from regular switches. They are critical to ensuring effectiveness. For example, when the current exceeds a certain amount of time, they cause heat to be generated, allowing the fuse to switch the fuse to further assist in breaking the circuit. Therefore, as a kind of current protection device, they can achieve ...
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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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