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电弧触发式混合型限流熔断器是电子测控式限流熔断器的一种更新装置,具有可靠性高、体积小、成本低等优点,但现有产品的最高额定电流只有600A,额定极限分断电流只有25kA。为此,对电弧触发式装置进行了分析,认为制约其额定电流和极限分断电流水平的关键因素是电弧触发器的动作快速性不够,提高动作快速性的有效方法是提高狭颈的载流密度。基于ANSYS 11.0软件对电弧触发器进行仿真分析和参数优化,获得了电弧触发器熔体的优化设计结构。实际制作的电弧触发器,其狭颈额定载流密度高达3 300A/mm2,可用于额定电压10kV、额定电流2kA、额定分断能力40kA的混合型限流熔断器。
Arc-triggered hybrid current-limiting fuse is an electronic measurement and control current-limiting fuse an update device, with high reliability, small size, low cost, but the existing product maximum rated current of only 600A, rated limit breaking Current is only 25kA. Therefore, the arc-triggered device is analyzed, the key factor that restricts the rated current and the limit breaking current level is that the action of the arc trigger is not rapid enough, and an effective way to improve the quickness of operation is to increase the current carrying density . Based on the software ANSYS 11.0, the simulation and parameter optimization of the arc trigger were carried out, and the optimal design structure of the arc trigger melt was obtained. The actual arc trigger, narrow-neck rated current density up to 3 300A / mm2, can be used for rated voltage 10kV, rated current 2kA, breaking capacity of 40kA rated current-limiting fuse.