The busway and busbar are actually closed one after the other, and the other is not closed.
Closing the busbar is referred to as the busway, which means that the busway is the vest that closes the busbar, and the closing busway and the busbar refer to the same thing.
Closed busway is a busbar system composed of metal, steel or aluminum plates as protective shells, conductive strips, insulating materials and related accessories.
It can be made into a penetrating closing bus for spaced penetrating junction boxes, and can also be made into a feed-in closing bus without a junction box in the center. It is a type of busbar that uses a metal casing to close the main busbar.
Advantages of closed busway: Favor standardization and good interchangeability. Non-magnetic or weakly magnetic materials are generally used to close the housing to reduce heat generation. The bus bar is closed, which improves the anti-pollution ability of the system. It is suitable for coal, papermaking, chemical industry and other areas with severe dust and high air humidity.
The closed bus can be divided into dense insulated bus and air insulated bus, which is suitable for additional operating voltage of 660V and additional operating current of 250-2500A. The three-phase four-wire or three-phase five-wire power supply and distribution line with a frequency of 50Hz has compact structure, high dielectric strength, large transmission current, good interchangeability, stable electrical function, convenient installation and maintenance, and long service life. Service life. Series features.
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Wiener bus adapters are suitable for use with Siemens 3VA1 and 3VA2 circuit breakers
For the use of Siemens' new 3VA1 series circuit breakers in the 30Compact system with currents up to 160A, Wiener has developed an EQUES® bus adapter.
A spring-loaded base and high-performance internal power rails ensure safe connection to the circuit breaker.
advantage
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Protection of medium and low voltage busbars – Wienal
There are three types of maintenance commonly used in medium and low voltage bus systems:
(1) Transformer backup overcurrent maintenance (typical maintenance action time is 1.2s - 1.4s)
(2) Transformer voltage with feeder quick-break maintenance locking ...
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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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Distribution cabinet bus connection method - Wiener
When users use the distribution cabinet, they must understand the circuit device of the busbar, and many users are not very well understood, so let's talk about the bus connection mode of the distribution cabinet.
The bus bar is used for the internal and external electrical appliances of the distribution cabinet.
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Calculation method of bus system and distribution cabinet bus - Wiener
The bus system divides the bus into hard bus and soft bus. The 60mm bus system refers to the three-wire or four-wire bus with a distance of 60mm.
1. In the 60mm bus system, the different cross-sectional areas of rectangular copper bars or special-shaped copper busbars such as 2T and 3T can be used to achieve the best classification of current intensity grades.
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Example of the application of the Wiener busbar system
The motor control cabinet uses the Wiener bus system, and the copper bus is used as both a hooking element and a conductive element; The incoming molded case circuit breaker is connected to the copper bar through a special bus adapter, and all the motor maintenance switches and contactors are hooked on the bus adapter in an orderly manner.
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Knowledge points of Wiener busway
Busway was born in the United States, first put into practical use in Japan, and then spread all over the mountains and regions in prosperous countries and regions. So what is a busway? Busway is a high-current trunk tappable power supply system, usually made of a metal housing (iron or aluminum).
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Power system bus wiring features - Wiener
1) Single bus wiring. Single bus wiring has the advantages of simple and clear, less equipment, small investment, convenient operation and conducive to expansion, but the reliability and flexibility are poor. When there is a fault or maintenance of the bus bar or bus barrier switch, the full power supply of the bus must be disconnected.
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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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Introduction to Laminated Busbar System – Wiener
In the power system, the bus connects the various current-carrying branch circuits in the power distribution device together, and plays the role of collecting, distributing and transmitting electric energy; According to the appearance and structure, the bus bar is roughly divided into three categories: hard busbar, soft busbar and closed busbar.
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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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Some of the Wiener series models
05802 Insulator with female thread, bolt, M8, height 35mm
08824 Platen connector for PE- and N-busbar 01 932
08825 Snap-on fastener, for PE- and N-busbars 01126-01129 and 019 ...
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Standard parameters of busway specification - Wiener
1. The standard scale of the bus duct
This specification regulates the terminology, skill requirements and test methods of the insulated bus trunk system (bus duct) and its plug-in feed box (hereinafter referred to as the feed box).
This specification specification applies to additional voltage AC to 660V...
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Vernal fuse replacement method
1. Prepare for replacement. For example, construction personnel should wear labor protection equipment, such as insulating gloves.
2. Determine the type of fault. Check the distribution box with a test pen first, and after making sure that there is no leakage, open the door of the distribution box. Then use a voltage tester to detect the three-phase power supply, if the three-phase ...
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How to optimize the busbar system of the computer room - Wiener
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 equipment room. So how do you optimize ...
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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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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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Difference Between Busbar and Cable – Vernal
When the busway has not been developed and introduced, the cable is still an indispensable figure in the low-voltage power distribution system, when the busway system is introduced and widely used. Whether to choose the cable or the bus duct has become a topic of endless debate.
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Venal common bus scheme applicable places and precautions
When multiple inverters are used in the common DC bus, because the DC bus between the inverters is connected together, the bus energy between the inverter in the power generation operation state and the inverter in the electric operation state can flow to each other, so that the voltage of the common bus remains relatively stable, and the body ...
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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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