1. Energy saving: The energy fed back when the motor brakes can be used, so it is more energy-saving, especially for oilfield kowtow machines, cranes and other lifting equipment. 2. The power element of the equipment is high: because the motor can feed back energy, the reactive power loss is small, so the power of the equipment ...

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.

The nature is different Busbar: It is a common path on which multiple devices are connected in the form of side-by-side branches. Busway: It is a closed metal equipment composed of copper and aluminum busbars. Different uses Mother...

1. Commonly used busbars, useful categories 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. According to its material ...

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. ...

The grounding electrode is a discharge channel that connects current or voltage to the earth, and in order to reduce the grounding resistance, the electrodes that form the grounding grid are generally used in groups. The grounding bus refers to the connecting wire that connects the current or voltage to the grounding grid, or the conductor that connects the grounding electrode into one. ...

1. Trunk power distribution system, simple wiring and reliable operation. 2. It is convenient to tap, and you can tap without cutting off the main power supply. Large power supply capacity up to 6300A current-carrying capacity. 3. High dielectric strength, strong overload, superior fire performance. Good heat dissipation performance, low impedance ...

1. Selection of qualified products of regular enterprises: The busway must be a product with the 3C necessary certification mark and style test report. China's busway factories are uneven, and most of the production methods are handicraft, mainly in well-off areas. When purchasing, it is necessary to thoroughly investigate the production of the factory ...

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, ...

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...

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 ...

1. The cable in and out of the bridge is not piping 2. The orientation of the bridge grounding and crossing is incorrect, and the special grounding line of the spray or painted bridge device is not equipped with a special disc gasket 3. The fireproof board of the electric well is not fixed, and the fireproof plugging is not perfect 4. The bridge is opened at will, and no standard accessories are used.

1: The basic requirements for the bus duct: 1) Conductor data: high-purity electrical copper drawn from national standard T2 electrolytic copper, with a purity of more than 99.9% and a full-length tinned copper conductor. 2) Shell: Select high-quality aluminum-magnesium alloy profiles that meet the strength, with heat dissipation ribs, and the appearance should be oxygen-proof.

(1) Simple maintenance and repair operations Equipment is often added or removed or changed in the computer room, and cables are removed or added at the same time, and the grid bridge with open structure can observe the cables to the maximum extent, so it is easy to distinguish the cables that need to be replaced, so that maintenance and repair ...

1. Charging to the bus should be carried out with a switch (bus tie, bypass or line switch) with snap-action maintenance that reflects various types of faults. Before charging the bus, it should be considered whether the system may be unstable if the charging bus trips, and if necessary, the active power flow of the relevant line can be reduced. ...

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 computer room. So how do you optimize ...

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.

XBT series mine flameproof communication cable distribution box has the characteristics of small size, reasonable cable import and export, and wide coverage. Each distribution box has 4-10 inlet and outlet bells, which is suitable for HUYV type mine signal cable in coal containing sexual gas (methane) mixture (non-mining face).

The Wiener bus system is divided into 40mm, 60mm, 100mm and 185mm systems according to the upper and lower spacing between the copper bars, and the ship unloader distribution cabinet mainly adopts a 60mm rectangular bus system. This is shown in the figure below. The 60mm system provides maximum operating space and maximum current with its smallest external size.

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.

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.