Arc Movement

 

Arc Movement

The observation that the arc movement
occurs at the same contact gap for both
contact systems is in accord with previous
studies [36] where it was shown that a
minimum contact gap is requirement for arc
motion. However, in this study the most
significant delay in moving away from the
contact region occurs after this initial arc
motion, and in these tests the onset of rapid
arc motion bore no relationship to the
contact separation.
The waveform of arc voltage and contact
position when the contact opening velocity
of 1 m/s, using solenoid and piezoelectric as
mechanism to open the contacts, as shown in
Figure 8.4.

Reference:

Piezoelectrics in Circuit Breakers: Design & Test