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Mobile equipment needs to constantly change positions due to movement, and at each different position, it must be able to obtain power supply at any time, otherwise it cannot continue moving. This is when the busbar system comes into play. Several conductors are laid parallel along the moving equipment's travel track and connected to the power supply. On the moving equipment, a current collector is installed that can draw power from the conductors. Thus, when the equipment moves, the current collector moves synchronously with the equipment, continuously drawing power from the conductors to supply the equipment, allowing it to continue moving. The device composed of these conductors and current collectors is called a busbar system.
The power supply busbar system consists of three main components: the sheath, conductors, and current collectors, along with some auxiliary components.
1. Sheath: It is a semi-enclosed tubular component and the main part of the busbar system. Inside, 3-16 bare guide rails can be embedded as power supply conductors as needed, with each rail insulated from the others to ensure safety of power supply. It also effectively prevents electric shock accidents for maintenance personnel during live maintenance. Each length of the conduit produced by the manufacturer varies and can be connected to any required length. Standard conduits are made in straight shapes, but can also be made in arc shapes according to special requirements.
2. Conductors: The main material is copper, with common cross-sectional areas of 10 mm², 16 mm², and 25 mm².
3. Current collector: It is a set of brush housings that run inside the conduit, driven by a fork (or traction chain, etc.) installed on the power-consuming mechanism (such as a crane, trolley, or electric hoist), enabling it to move synchronously with the mechanism. It transfers electrical energy from the guide rails through the brushes to the motor or other control elements. The number of poles on the current collector brushes ranges from 3 to 16, corresponding to the number of guide rail poles in the conduit.
(2) Product Features
1. Safety: The housing of the power supply busbar system is made of engineering plastic with high insulation properties. The enclosure protection level can reach IP13 or IP55 as needed, providing protection against rain, snow, ice, and contact with hanging objects. The product withstands various environmental conditions. With excellent insulation performance, it poses no harm to maintenance personnel who touch the exterior of the transmission conduit.
2. Reliability: The transmission guide rails have excellent conductivity, fast heat dissipation, high current density, low impedance, and minimal line loss. The brushes are made of metal graphite material with high conductivity and high wear resistance. The current collector moves flexibly with good directional performance, effectively controlling contact arcs and arc chaining.
3. Economy: The power supply busbar system has a simple structure, using copper bars with high current density, low resistivity, and low voltage loss as the conductive main body. It can save about 6% of electricity, achieving the substitution of plastic for steel and copper. The design is innovative, requiring no additional insulation structures or compensation wires. It is installed on the same side as the crane control room, saving installation materials and costs. Its overall cost is roughly the same as that of bare steel busbars.
HGRX-C-125-T Copper C-type Flexible Busbar uses high-strength special insulators for support, suitable for harsh environments such as high temperature, high dust, and corrosive gases. It also features a large heat dissipation surface, compact and simple structure, and easy installation and maintenance.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
