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The behavior of the arc formed during electrical circuit opening is examined, in the presence of a pulsed magnetic field. The field is applied in the inter-electrode gap where the arc develops. The opening sequence may be separated into two temporal phases. During the first phase, the arc remains stuck at the same position as under zero field. This is ascribed to the existence of a sticking force,...
The phenomenon of magnetic blowing allows drastic reduction in arc duration. It is of specific interest in DC applications, more specifically in automotive applications. Blowing exploits the action of the magnetic force on the transitory arc formed during circuit opening. A new contact was described in a previous paper in which the magnetic field required for blowing is generated by the contact material...
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