Investigation of vacuum arcs between with varying gaps up to 40 mm

As one of the most common circuit breaker technology, the vacuum circuit breaker (VCB) is widely used in medium grid voltages. A main task is the interruption of high short circuit currents, where the VCB outperforms other approaches due to low arc voltages during breaking operations. These low voltages are the result of the special kind of plasma produced as the contacts are separated. The applie...