The studies have shown that the extent of the cathode and anode zones of the arc is very small: : lк = 1·10-5 см; lа = 1·(10-3…10-4) cm. Then the length of the column of the arc: lс ≈ lд (equal to the length of the arc), and
Uд = Ua + Uк + Uс ,
Lд = lа + lк + lс .
The power released in the 3 zones of the arc Pд = Icв·Uа + Icв·Uк+Icв·Uс, is completely determined by the values Uа,Uк,Uс, Uа = 2..5 V; Uк = 4..20 V. For steel electrodes Continue reading →