Abstract
Current zero measurements in modern circuit breakers are discussed. It is shown that vacuum interrupters always exhibit a postarc current when breaking at high current. On the other hand, it is shown that, due to the very short time constant of SF/sub 6/ circuit breakers, no measurable postarc current is driven in these devices. A description of the current zero phenomena in SF/sub 6/ is proposed, which includes the interaction with the circuit. It is noted that O. Mayr's (1943) and A. M. Cassie's (1939) models are not sufficient for describing the current zero phase.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
