Question

2. Explain why arcing should be avoided in any circuit breakers. [5 marks]

Answer 1

Circuit breakers are nothing but special type of a switch, which has two contacts fixed one and a movable one. Cercuit breakers thare used to remove the fault section or isolate fault section from that of healthy line, whenever there is sudden intersruption in Supply (current), of we CS Scanned with catransm missions arcing deal with high voltages m

The air fault between two electrodes gets breakdown or ionized, due to the high voltages we are dealing with. And starts Conducting through aik nearby. Even though the Circuit breaker is opened, Section is not isollate from healthy section, since Conduction is taking place through arcing. More over there Circuit breaken gets transient Cugsents. So to avoid all these, arling damage due to high is to be avoided. CS Scanned with CamScanner