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.
Laminated busbar, laminated busbar or laminated busbar system is a composite component composed of two main materials, namely copper plate and sheet molded composite material. The copper bus bar is pressed into a sandwich bus system through sheet molded composite materials or epoxy materials.
After the use of thin copper plate, the heat dissipation area is increased a lot, the skin effect is small, and the amount of copper used is reduced a lot; For example, the 2mm thick copper plate, the width of the copper bar is 400mm, the cross-sectional area is 800mm2, and it can carry 2000A current
Eliminates the dangerous exposure of live busbar parts; Arc protection zones ensure the safety of protected personnel; Cutting the danger of arcing caused by mechanical failure, then drastically cutting the moment of protection and downtime; There are fewer bus parts than traditional switchgear; Fewer electrical connectors for maximum switchgear availability; Excellent cooling power, which cuts heat emanation, saves power and reduces costs; Less space required – the switchgear footprint is cut and space is saved.
The connection between the laminated bus bar and the main busbar, the main bus adopts a tubular structure, 100mm outer diameter, 10mm pipe thickness, and the laminated bus system is connected with the main bus through a plug, the copper pipe is slotted, and the bus contact system. Through the laminated bus system and plug-in contact system, the switch cabinet can realize a thin structure similar to that of a tablet computer, and the modular combination plug-in and plug-in application is safe and reliable.
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Low-voltage cabinets need temperature and humidity controllers for the reason - Vernal
Why is the temperature and humidity controller of the low-voltage cabinet? The application field of low-voltage cabinet is very wide, high-voltage switchgear should be one of the key electrical equipment and equipment for electromagnetic energy production scheduling and transportation, there will be some simple reasons to form high-voltage switchgear hot in specific work, low-voltage cabinet I remind you that at this time ...
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Classification of busway – Vernal
According to the different uses of the bus duct, the bus groove is generally composed of the start bus slot, the straight bus slot (without partition jacks and jacks), the L-shaped straight (horizontal) curve bus, the Z-shaped straight (horizontal) offset bus, the T-shaped straight (horizontal) tee bus, the X-shaped straight (horizontal) four-way bus, the transformer...
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Dense busway with high insulation – Wienal
The dense busway is made of structure, with high mechanical strength, good sealing, fast heat generation, good shielding function and anti-chimney effect.
The conductor is constructed to overcome edge discharge and acute angle damage to the insulation.
Insulation selection extrusion ...
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Advantages of busbar mounted electrical equipment - Wiener
The novelty, flexibility and originality of the busbar device appliance. It indicates the vitality of this skill and its broad market prospects. This is the real reason for our attention.
First of all, this small electrical appliance plant was conceived ...
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Classification of the use of different places in the busway - Vernal
(1) General bus duct
Non-flame retardant and non-fire-resistant bus duct used in general load power distribution. In the event of a fire during a short circuit, it will always incinerate to other connected busbars, which may briefly cause fire accidents.
(2) Flame retardant bus duct
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Wiener plug-in busway features
The plug-in busway has a high overload capacity
The overload capacity of the bus duct is strong, depending on the high working temperature of the insulation material it uses, and the working temperature of 105C is selected for the insulation material used in the bus duct, and the radiation cross-linked flame retardant winding tape with a working temperature of more than 140 °C has been developed ( ...
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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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Bus voltage non-system equipment failure and solution - Wienal
In order to ensure the safe and economical operation of the power system and its power generation, supply and electrical equipment, power grid users require the voltage to operate in three ways: forward voltage regulation, reverse voltage regulation and constant voltage regulation. However, when the power grid is in practice, due to the change of active and reactive power output, the increase or decrease of electricity load, and the system wiring party...
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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 connection method of the tubular busbar
In the industry, tubular bus bar can be described as one of the more common equipment, with high mechanical strength, good insulation, wide range of application and other characteristics of many enterprises. So do you know what are the ways to link tubular busbars?
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Busbar differential protection switching operation – Wienal
1. Whether the maintenance scale of the bus differential is confirmed, and whether the maintenance target is unchanged
Generally, differential maintenance includes bus differential maintenance, transformer differential maintenance, generator differential maintenance and line differential maintenance. The basic principle of completing differential maintenance is the same, that is, each side or each ...
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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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Rectangular busbar, trough busbar, and tubular busbar analysis
The rectangular bus has good heat dissipation performance and is easy to fix and connect. But its skin effect is quite large. In order to reduce the skin effect, the cross-sectional area of a single busbar should not exceed 1250 square millimeters. When the working current exceeds the promised current of a single bus, 2 to 4 rectangular buses can be used. Rectangular conductor a ...
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Connector box features of the busbar system – Wiener
1. Rapid device
Today, busway adapters cannot be flipped at the time of installation, and the two busway sections are not out of phase when flipped when connected.
2. High protection level
The coupling box has a protective function, ...
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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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NH-Fuse Type Disconnector Instructions for Use
When switching on and off components, you should pay attention to the following:
–In accordance with VDE-0105-100, only operation by electrical professionals or persons with electrical knowledge is allowed (operation without electricity, closing, disconnecting, and replacing fuses ...).
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Features of the use of closed busway - Wiener
Compared with other air-type busway, Wiener closed busway has many similarities in appearance, and its difference lies mainly in the shell, the structure of the closed busway is more distinctive, which also makes its use have certain advantages. As long as it is in contrast ...
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Technical features of Wiener closed busbar
The out-of-phase shut-off bus adopts a fully connected structure, with optimized design, reasonable design, stable and reliable operation. Choose either natural cooling or forced air cooling.
The out-of-phase closing bus is to support the conductors of each phase bus with insulators and close them in their respective shells, and the shells themselves are electrically connected, ...
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Busbar wiring problems of busbars - Vernal
Bus, transformer, generator set unit wiring. It has the characteristics of simple wiring, less switchgear, easy operation, suitable for expansion, and because there is no generator outlet voltage bus, the short-circuit current of the low-voltage side of the generator and the main transformer is reduced.
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The content and steps of low-voltage cabinet maintenance - Wiener
1: The overhaul should start from the low voltage side of the transformer. After the power failure of the low-voltage cabinet, clean the dust in the cabinet to check whether the connection between the bus bar and the down conductor is outstanding, whether the connection is heated or discolored, whether the cable head and the terminal pile head are strong and reliable, whether the grounding wire is corroded, and whether the terminal pile head is tightened. Everything secondary ...
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