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 tap connection of bus duct: the so-called plug-in bus duct, fireproof bridge is that it uses the plug-in method to tap the power supply of the main line to the branch line, so the tap is very convenient.
2. The bus duct can be strong in overload: the bus duct can be strong in overload, depending on the high working temperature of the insulation material it uses, and the data with a working temperature of 105 °C is selected for the insulation data used in the bus duct, and the radiation cross-linked flame retardant winding tape (PER) and radiation cross-linked polycarbon heat shrinkable tube with a working temperature of more than 140 °C have been developed. The perennial working temperature of the insulation materials used in the cable is generally 95 °C and 105 °C, so the overload of the bus duct can be much greater than that of the cable.
3. The heat dissipation function of the bus duct is good: the insulation data of the cable is not only the insulation data, but also the heat insulation data, so when the power cable is laid in the bridge, it is allowed to lay up to 2 layers, and it is considered to be a heat dissipation problem. The busway uses air conduction to dissipate heat, and through the tightly touched steel shell, the heat is discharged, so its heat dissipation function is excellent compared with the cable.
4. The bus duct can avoid overload fire, the insulation layer and sheath of the ordinary cable will be incinerate, and the flame retardant cable will also be incinerated under the flame, as long as the flame leaves the fire-resistant cable will not be incinerated, but the price is expensive, as long as the fire protection and other power supplies that are not allowed to fail the power supply are fire-resistant cables. The busway shell is made of steel and will not be incinerated, even if the insulation material of the copper bar is burned, the flames will not escape to the outside of the busway.
5. Convenient maintenance of bus duct: bus duct almost no maintenance, daily maintenance is usually to measure the temperature rise of the shell and grommet, the temperature rise of the connector of the inlet box, etc., if the grommet bolt is selected 4.8 grade, it needs to be fastened regularly, and if the 8.8 grade high-strength bolt is selected, it is not necessary to consolidate it from time to time.
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How is the Wiener bus system generally debugged in sections?
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, most of which use bare wires or stranded wires with rectangular or circular sections. The role of the bus bar is to collect, distribute and transmit electrical energy. According to the structure, the bus bar is divided into hard busbar, soft ...
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Application and technical requirements for bus protection on the low voltage side - Wiener
1. The use status of bus maintenance on the low-voltage side
According to the national standard "Code for Relay Maintenance and Automatic Equipment Design of Power Equipment" (GB50062-92): about the 3-10kV bus and the double bus running in parallel of the power plant and the primary substation, as long as the following conditions are installed.
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Busbar system reverse operation – Wiener
1. For the charging of the spare bus, when there is a bus tie circuit breaker, the bus tie circuit breaker should be used to charge the spare bus. At this moment, the maintenance device of the bus tie circuit breaker should be fully invested, and the relevant maintenance value and time limit should be changed to a smaller one, so as to facilitate the bus tie circuit breaker when there is a problem, the bus tie circuit breaker can quickly trip, cut ...
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Differences and differences between busway and other busbars
The busbar and busway are actually one open and one closed, and the other is not closed. The closed busway is referred to as the busway, that is, the busway is sealed
The closure of the busbar, the closure of the busbar and the busway all refer to the same east...
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Wiener Data Center Bus System
Although the service life cost of the busbar system is usually lower than that of the traditional wiring method, the busbar system still bears a considerable cost compared to other structural elements of the water supply and drainage or HVAC system.
In addition, customized busbars ...
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The difference between the busbar system and the traditional wiring
The advantages of the busbar system are:
1. The Wiener bus system adopts the bus bar non-perforation connection technology, and the electrical components are firmly connected to the busbar;
2. It saves the device space, saves the redundant wiring, saves the device time and labor;
3. The busbar ...
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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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There are several main ways to wiring the Wiener bus
Bus line refers to a product made of copper (copper bar) and aluminum material with high conductivity to transmit electrical energy and have the ability to collect and distribute electricity. The main conductor used by the power station or substation to transmit electrical energy. Through it, the output of the generator, transformer or rectifier ...
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What are the hazards of 220V DC in the 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 DC are insulated from the ground, and there is no grounding current when generating a ground current when one pole is grounded.
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The difference between air-type busway and dense busway - Vernal
1. The insulating medium is different: there is a certain open space between the copper bars of the air bus duct, that is to say, the insulation between the copper bars mainly depends on air, and the insulation medium between the copper bars of the dense bus duct (many people call it a closed bus duct) is an organic insulating material.
2. Copper bar placement ...
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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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Characteristics of single bus wiring in the switchgear - Wiener
In power distribution equipment such as voltage distribution cabinets and switchgear at all levels of power plants and substations, the conductors connected between large electrical equipment such as generators and transformers and various electrical equipment are called busbars. Busbars, also known as busbars, are used to gather, distribute, and transmit electrical energy. The connection methods of the bus bar are ...
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Scope of application of busbar - Wiener busbar system
Busbars are divided into hard busbars and soft busbars.
According to its different shapes, hard buses can be divided into: rectangular busbars, tubular busbars, trough busbars, diamond busbars and so on.
Rectangular busbars are the most commonly used busbars and are also busbars. ...
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A brief introduction to the classification of busway - Wiener
Busway (referred to as busway) is a busbar system composed of metal plates (steel plates or aluminum plates) to protect the shell, conductive bars, insulating materials and related accessories. It can be made into a plug-in closed bus with plug-in junction boxes at intervals, or as a feed-in type without a junction box in the center ...
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The service life of the lighting power busway – Wienal
The system consists of a current box, a bus body, a branch plug and device accessories.
When the heat dissipation of conductive copper strip is effectively improved, the contact between the copper strip and the inner wall of the tube is reduced, the insulation resistance and anti-aging ability of the tube body are strengthened, and then the service life of the tube body is extended. The longevity of the tube far exceeds ...
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Characteristics of the common box closed busbar - Wiener
The common box closed bus includes the non-phase isolated, common box closed bus, phase isolated common box closed bus and AC and DC excitation common box bus, which are used for current transmission between the generator lead wire below 100MW and the low-voltage side of the main transformer or between the low-voltage side of the transformer and the high-voltage distribution device of the unit of 75MW and above.
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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 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. So it's hard to say which of the two is better ...
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Dense busbar installation – Wiener
1. Requirements for civil engineering before installation
1) The foundation, structure, reserved holes and embedded parts all meet the design requirements of electrical equipment.
2) After the construction of the roof and floor slab is completed, there shall be no leakage.
3) After the indoor ground construction is completed, mark the ground leveling line on the well wall.
...
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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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Several faults of the Wiener bus system can be avoided
Cause of bus failure
1. The inner network of the bus insulator and the breaker sleeve caused by the dirty appearance
2. The voltage transformer installed on the bus and the current transformer between the bus and the circuit breaker fail
3. Reverse gate ...
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