How does the design of Poured Bus Duct consider the influence of current load and short-circuit current?
Publish Time: 2024-06-21
As an important part of the power system, the design of Poured Bus Duct must fully consider the influence of current load and short-circuit current to ensure the safe and efficient operation of the system. The following is a detailed analysis of how the design of Poured Bus Duct considers these two factors:
1. Consideration of current load
Current carrying capacity calculation: The design of Poured Bus Duct must first calculate the current carrying capacity. This requires the use of professional calculation software or formulas to obtain the maximum current carrying capacity of the bus duct based on the material, structure, size and other factors of the bus duct, combined with the actual current load.
Material selection: In terms of material selection, Poured Bus Duct usually uses copper or aluminum as the conductor material. Copper has better conductivity but higher cost; aluminum has slightly worse conductivity but lower cost. When designing, it is necessary to select appropriate materials according to actual needs and cost budget.
Structural design: In terms of structural design, Poured Bus Duct adopts a reasonable "sandwich" phase line tightly stacked structure design, which makes the bus duct more compact and smaller in size, and enhances the dynamic thermal stability of the bus system. At the same time, the conductors are isolated by full mold casting to ensure insulation performance.
2. Consideration of short-circuit current
Short-circuit withstand current strength: The design of Poured Bus Duct needs to consider its short-circuit withstand current strength. When a short circuit occurs in the system, the bus duct needs to withstand a momentary high current impact. When designing, it is necessary to ensure that the mechanical strength and electrical performance of the bus duct can meet the requirements of the short-circuit current.
Protective measures: In order to prevent the short-circuit current from damaging the bus duct, a series of protective measures must be taken in the design. For example, protective devices such as fuses and circuit breakers are set, and materials with good insulation performance are used to reduce the impact of short-circuit current on the bus duct.
In summary, the design of Poured Bus Duct must fully consider the impact of current load and short-circuit current. Through reasonable current carrying capacity calculation, material selection, structural design and protective measures, the safe and efficient operation of the bus duct in the power system can be ensured.
