Module 4 : Overcurrent Protection
Lecture 14 : Fuse Protection
14.5

Classification of Fuses

3. Current Limiting Fuse
 
 
The current – voltage time relationship is shown in fig 14.7. We now conclude this lecture, by briefly discussing the physics of arc interruption. Simplified fault current circuit is shown in fig 14.8.

Earc(t) is the arc voltage and V(t) is the source voltage, then differential equation governing the circuit is:

     
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