【摘要】 熔断器串接于被保护电路中能在电路通过过载电流或短路电流时自动熔断,从而切断电路起到保护的作用,在电网中有着广泛的应用。对于高压熔断器的特性及实验现象,国内外已有较深入的研究,但是对于中压熔断器的研究却相对较少。中低压熔断器发生熔断事故的原因很多,而多数文献仅仅提到了某一个原因,通过详细的研究总结,并将熔断器故障原因分为四类,结合实际工况的影响进行了定性分析。为中低压熔断器的选型总结梳理了一些基础原则,可作为熔断器使用者的理论参考。更多还原

【Abstract】 The fuse connected in series in the protected circuit can automatically fuse when the circuit passes through the overload current or short circuit current,so as to cut off the circuit and play the role of protection.It has a wide range of applications in the power grid.The characteristics and experimental phenomena of high voltage fuses have been studied deeply at home and abroad,but the researches on medium-voltage fuses are relatively few.There are many reasons for fusing accident of medium and low voltage fuse,but most literatures only mention one reason.In view of this,through detailed research and summary,the paper divides the fuse fault causes into four categories,and makes a qualitative analysis in combination with the influence of actual working conditions. The paper also summarizes some basic principles for the selection of medium and low voltage fuses,which can be used as a theoretical reference for fuse users.更多还原