Technical Specifications And Precautions For Selecting High-voltage Drop-out Fuses

Since the size of the DC drop fuse time constant L/R determines the arc breaking energy, breaking time and let-through voltage, the thickness and length of the drop fuse cutout tube must be selected reasonably and safely. It is irresponsible and undesirable for some manufacturers to blindly use low-strength porcelain or short tubes to produce DC high voltage drop out expulsion fuse due to limitations on the size of existing porcelain tubes or to reduce costs.