(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.
(2) Double bus wiring. Dual-bus cabling has the advantages of reliable power supply, convenient protection, flexible scheduling or easy expansion. However, this kind of wiring uses a lot of equipment (especially zonal switches), and the power distribution device is messy and the economy is poor; The barrier switch is used as an operating electrical appliance in operation, and misoperation is easy to occur, and it is not convenient to complete automation. Especially when the bus system fails, more power supplies and lines must be removed in a short period of time, which is not allowed for particularly important large power plants and substations.
Several methods and characteristics of power system bus wiring
(3) Single, double bus or bus segment plus bypass. Its power supply is highly reliable and fast and easy to operate, but its investment has increased and its economy is slightly worse. Especially when a bypass circuit breaker is used to carry the circuit, the operation is messy, which increases the chance of misoperation. Together, the device of the bypass circuit breaker clutters up the corresponding protection and automation system.
(4) 3/2 and 4/3 wiring. It has a high degree of power supply reliability and operational activity. Any faults or overhauls of the busbar will not cause a power outage; With the exception of a short-term power outage of the two circuits connected to the circuit breaker at the time of the connection failure, any malfunction or maintenance of the other circuit breakers will not interrupt the power supply; Even if two sets of busbars fail together (or when one group undergoes an overhaul and the other fails), power can still be supplied under extreme conditions. However, there are many devices used for this wiring, especially circuit breakers and current transformers that require a lot of investment, as well as secondary control wiring and relay protection.
(5) Bus-transformer-generator unit wiring. It has the characteristics of simple wiring, less switchgear, cumbersome operation, suitable for expansion, and because there is no generator outlet voltage bus, it can reduce the short-circuit current of the generator and the main transformer.
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Use and characteristics of AC busbar systems – Wiener
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The Wiener bus is a Siemens 3 VA1 and 3 VA2 adapter
Wiener has developed a new series of 3 VA1 circuit breakers equipped with ® busbar adapters from Siemens in the 160 system with a compact range of 30.
The safety articulation of the circuit breaker is the internal right of the tension spring device base and high-performance rails.
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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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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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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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Busway installation waterproofing work - Vernal
Most of the bus duct is the design standard for indoor use, so even if the humidity in the indoor air is relatively high, it will not have much impact on the operation of the busbar, but the bus duct enters the water during the use of the busway, which will definitely cause a certain degree of impact.
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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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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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Wiener enclosed busbar installation
Closed busway is a busbar system composed of metal plates (steel plates or aluminum plates) as protective shells, conductive strips, insulating materials and related accessories. It can be made into a piercing closing bus with spaced piercing junction boxes, or a feed-in closing bus without a junction box in the middle. ...
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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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How to solve the fault of the busway
If there is a problem in the bus duct of the double bus wiring, it is necessary to pay attention to the operation mode of bus maintenance in the process of dealing with the problem, and if necessary, the bus maintenance should be stopped for a short time. After the bus voltage disappears, the dispatcher should immediately swing the switch (including the bus tie switch) that may call, and notify the operation team to ...
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Features of Wiener busway
The Wiener busway mainly acts on the aluminum conductor, which has a large current capacity and good electrical and mechanical properties. In addition, it uses a metal trough as the shell, so it is non-flammable, safe and reliable, and has a long service life. Compared with traditional power distribution, the equipment occupies a significantly smaller area and has a beautiful appearance.
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The innovation of Wiener 185Power in the low-voltage main distribution system
The new base system adapter creates a new type of solution in combination with the 185Power system, which was not possible before. CrossBoard® products can be easily connected to the adapter of the base system via the CrossLink® interface. Components of DIN support rails, e.g. 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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Difference Between Busbar and Busway – Vernal
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, mostly use bare wires or stranded wires of rectangular or circular cross-section, which are collectively referred to as busbars.
The role of the bus bar is to collect, distribute and transmit electrical energy. Because the busbar ...
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Distribution cabinet bus calculation method - Vilna
1. The main bus at the upper end of the low-voltage distribution cabinet is calculated according to the material and cross-section in the extension meter. The bus bar connected to the main bus at the upper end of the switch is not accounted for and is included in the low-voltage distribution cabinet.
2. The transformer mainly depends on how large the load is, according to your switchgear can be calculated to match the transformer, but not the same...
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Structural characteristics of high-voltage busway - Vernal
If you understand the scope of application of the busway, you can see that the excellent effect of the busway has the upper hand, which has a lot to do with the structural features. Therefore, if you want to have more confidence with the bus duct, you still need to understand it from the structural characteristics. At a time when China's economy is developing rapidly, ...
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Introduction to the Wiener 3-pole adapter
1、32590
EQUES®30Compact
Bus adapter 32 A
1 adjustable support rail
45 x 160 with conductor AWG 10 (6 mm²)
2、32591
EQUES®30Compact
Bus adapter 63 A
1 ...
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What are the specific accessories of the busway - Wiener
1. Connecting copper plates, insulating plates, and insulating piercing screws generally refer to tension spring brackets, bus connectors, connecting copper bars, and plug-in boxes. The bracket is used for buffer busbars to squeeze each other during connection, and the adapter is used for connection. The connecting copper bar is the local use of the box and the bus connection of the cabinet connection.
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Wiener busbar system PT disconnection treatment
The judgment of PT three-phase voltage loss (symmetrical disconnection) is fundamentally the same for each manufacturer, and it is judged according to the three-phase no voltage and the current of the line. The same is true for PT asymmetrical wire breakage. After analyzing the characteristics of PT wire breaking, the specific judgment of PT asymmetric wire breaking of different manufacturers ...
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