Investigation of the Arc of a Vacuum Circuit Breaker in a fixed Gap using the Triggering method.
Abstract When the contacts of a Vacuum circuit breaker (VCB) with current flowing through it, is separated, an arc is generated. The Arc is usually supported by ionized gas or ionized metal vapour derived form the metal contact. This arc is an essential component of the interrupting process and capability of the Vacuum circuit breaker. The object of this paper is to trigger, record, observe and analyze the dynamic image of the Vacuum arc when it ignites in a short gap and at a low voltage. A CMOS high speed digital camera will be used to record the images of the arc. The characteristics of the arc in its diffused and constricted state, the degree of changes between the two states, and the direct relationship between the voltage and current will also be observed. The life time of the Vacuum arc will be 10ms