Phase-off bus is a kind of high-current transmission equipment widely used in the outgoing circuit of generators of 50MW and above and the branch circuit of the factory
The de-phase closing bus conductor and shell are made of aluminum plate coil and welding, with the following characteristics:
1. Reduce grounding faults, prevent phase-to-phase short circuits, and close the bus out of phase, because of the shell protection, it can eliminate the grounding faults caused by external moisture, dust and foreign objects, and the bus is selected to close in phase, and also eradicate the generation of phase-to-phase short circuits
2. Eliminate the heating of the steel structure, close the phase, close the busbar, and choose the shell shielding, which can fundamentally deal with the problem of induced heating of the steel structure
3. Reduce the interphase short-circuit electrodynamic force, because the double shielding effect of eddy current and circulation on the shell greatly reduces the short-circuit electrodynamic force of the interphase conductor
4. Improve the safety and reliability of operation, the plant's basin insulator is made of SMC pressing, and after the bus is closed, so as to prevent condensation of the insulator, at the same time, hydrogen measurement and temperature measurement equipment are selected, and the measurement signal can be displayed on the spot or transmitted to the DCS system to improve the safety and reliability of operation, and the bus bar is closed, and the conditions for ventilation and cooling are also invented
5. Close the busbar, produced by the factory in a complete set, the quality is guaranteed, the operation protection workload is small, the construction device is simple, and there is no need to set up a fence, which simplifies the requirements for civil engineering
6. The shell contains a branch circuit in the same phase, and the electrically fully connected type is selected, and multi-point grounding is selected, so that the shell is basically in equipotential grounding, and the grounding method is large
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Busway installation method - Wiener
1. Busway horizontal device, the interval between the two brackets is ≯2500mm, and the interval between straight devices is ≯3600mm;
2. When the device bracket is straight, it should be drilled with the channel side plate and fastened with M6-M8 bolts.
3. In the process of installation construction, priority should be given to the power supply system, ...
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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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Advantages of installing cable trays with busway – Wiener
When it comes to cable tray installation, 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 connection of bus duct: the so-called plug-in bus duct, fireproof bridge is the way it uses plugged in.
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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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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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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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The operation procedure of the dual power supply automatic transfer switch
The dual-supply ACT is a new generation of products. Beautiful appearance, good quality, long life, simple It is composed of two three-pole or four-pole shell graders and their parts/mechanical interlocking transmission arrangements, intelligent controllers, etc., which are divided into two structures: integral and split.
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Precautions for the operation of low-voltage cabinets - Wienal
1. To carry out work in all and part of the energized panels, the equipment should be overhauled and separated from the operating machinery and equipment with obvious markings.
2. The secondary winding of the voltage transformer and the transformer should have reliable grounding maintenance.
3. On the secondary circuit of the voltage transformer in operation...
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Characteristics of power system bus wiring mode
(1) Single bus wiring. Single bus wiring has the advantages of simple and clear, less equipment, less investment, convenient operation and expansion, but its reliability and activity are poor. When the bus or bus divider is faulty or overhauled, it is necessary to disconnect all power to the bus.
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The difference between busway and silicone rubber inverter cable - Vernal
The internal bus duct uses high-quality T2 electrolytic copper as the transmission conductor, which has high purity, high conductivity, low loss and small heating, which is very suitable for industrial and mining enterprises that need large current load operations.
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Applications in the power of busbar systems – Vernal
The bus refers to the connection of voltage transformers and other voltage distribution devices at all levels in the substation, as well as the connection of electrical equipment such as transformers and corresponding distribution devices, and most of the bare wires or stranded wires with rectangular or circular cross-sections are selected.
Follow the lines ...
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Application of busway – Wiener
The busway system is an efficient power distribution device, especially suitable for the needs of high-rise buildings and large-scale factories for reasonable wiring. With the presentation of modern engineering equipment and equipment, the electricity consumption of all walks of life has increased rapidly, especially many high-rise buildings and large factories. Traditional cables serve as ...
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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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Vernal fuse core Siemens fuse alternative
Due to the long delivery time of the Wiener melt core, whether the Wiener fuse can be replaced by Siemens' fuse, the answer is yes, so it is recommended to use Siemens' Rong Xin, which corresponds to the following
3NA38012C NH-Fuse NH-,00(0 ...
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Uses and characteristics of busbar systems – Wienal
The bus system is a system with standardized bus distance, which is used in low-voltage power supply and distribution switchgear and control equipment, so that the bus can play the effect of conducting electricity and supporting electrical components.
The system is divided into 40, 60, 100 and 185mm ...
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The essence of Wiener busbar technology
1. Closed busbar hooking technology
Circuit breakers and contactors can be hooked on the bus through the bus adapter, and fuse switches and other products are directly attached to the bus, so the bus bar plays a two-layer effect of conductive and fixed rotation.
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Fast protection of medium and low voltage busbars – Wienal
1.It is necessary to install arc light maintenance
Arc maintenance in foreign countries has nearly 20 years of history, the first set of maintenance devices in 1995 has been put into operation, China's previous imported units in the introduction of foreign complete sets of arc light maintenance (such as Guohua Tianjin Panshan Power Plant), domestic units ...
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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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Difference Between Busbar and Cable in Power System – Wiener
Busbar refers to a product made of copper (copper bar) and aluminum materials with high conductivity to transmit electric energy and have the ability to gather and distribute electricity. The main conductor used by the power station or substation to transmit electrical energy. Through it, the electrical energy output from generators, transformers or rectifiers is delivered to individual users.
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The difference between busway and busbar - Vernal
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.
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