{"id":6525,"date":"2024-08-08T03:15:47","date_gmt":"2024-08-08T03:15:47","guid":{"rendered":"https:\/\/busbarmanufacturer.com\/?p=6525"},"modified":"2025-05-26T06:51:09","modified_gmt":"2025-05-26T06:51:09","slug":"what-is-the-difference-between-flexible-and-rigid-busbars","status":"publish","type":"post","link":"https:\/\/busbarmanufacturer.com\/sv\/what-is-the-difference-between-flexible-and-rigid-busbars\/","title":{"rendered":"Vad \u00e4r skillnaden mellan flexibla och styva samlingsskenor?"},"content":{"rendered":"

In the power transmission and distribution system, flexibel samlingsskena<\/strong><\/a> <\/span>and rigid busbar are two core technology solutions, serving the needs of dynamic and static scenarios, respectively. This article from the structural design, material properties, electrical performance, installation, and maintenance of eight dimensions of the comparison, combined with industry cases and authoritative data, reveals the core differences between the two to provide a scientific basis for engineering selection.<\/p>\n

Comparison of structural design and material<\/span><\/h2>\n

1. Flexible busbar: multi-layer composite and dynamic adaptability<\/span><\/h3>\n

The flexible busbar adopts the sandwich structure of copper wire row conductor + winding and wrapping layer + interlocking metal armor layer), the conductor is braided by multiple strands of fine copper wires, and the outer layer is wrapped with PET or PI insulating film. Its ductility is more than 100% and can be bent with a radius as low as 6 times the diameter, adapting to complex spaces such as tunnels and roofs.<\/p>\n

2. Rigid busbar: monolithic casting and static stability<\/span><\/h3>\n

Rigid busbar is made of solid copper\/aluminum rows + glass fiber-reinforced polyester as the core (e.g., Rogers DM1 material), using an extrusion molding process. The typical cross-section is rectangular or channel type, with mechanical strength of 300 MPa or more, suitable for large-span suspension installation.<\/p>\n<\/div>\n

\n\n\n\n\n\n\n\n
Parameter<\/th>\nFlexibel samlingsskena<\/th>\nRigid Busbar<\/th>\n<\/tr>\n<\/thead>\n
Conductor ductility<\/td>\n\u2265 100%<\/td>\n\u2264 5%<\/td>\n<\/tr>\n
Insulation thickness<\/td>\n50-350\u00b5m<\/td>\n1-6mm<\/td>\n<\/tr>\n
Bend Radius<\/td>\n6D<\/td>\nUnbendable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Electrical Performance and Safety Indicators<\/span><\/h2>\n

a. Load capacity and temperature rise control<\/span><\/h3>\n

Flexible busbar, through layered heat dissipation design, the temperature rise under 3200A current is \u2264 40K (test data of Yanghua Techtronics), while rigid busbar, due to the solid structure, is prone to eddy currents, and the same specifications of the load capacity is reduced by 15%-20%.<\/p>\n

b. Protection level and durability<\/span><\/h3>\n

Flexible busbar adopts IP68 fully sealed structure, which can work continuously underwater for 1 meter; rigid busbar is commonly IP55, which needs extra moisture-proof treatment. In terms of life expectancy, flexible busbars are designed for 25 years (automotive field) to 50 years (industrial field), while rigid busbars can last up to 60 years but with 30% higher maintenance costs.<\/p>\n

Environmental Adaptability<\/span><\/h2>\n

1. Seismic and dynamic loads<\/span><\/h3>\n

The metal armor layer of flexible busbar can absorb 80% of the vibration energy (LS cable test), successfully used in Shanghai Metro vibration damping system; rigid busbar is prone to bolt loosening when the vibration exceeds 0.5g.<\/p>\n

2. Extreme temperature response<\/span><\/h3>\n