“…In fact the electrical arc formation depends entirely on the properties of the contact material and is always initiated within metal vapor generated from the contacts during the breaking process. At the application currents (rated breaking current is 4kA) used in the IVTI, the arc can be assumed to be in Natural Diffuse Mode [2]. However, the arc generated within the IVTI should also be assumed to be gradually twisted and separated as the rotary contact moves along a selected locus during the break operation.…”
“…In fact the electrical arc formation depends entirely on the properties of the contact material and is always initiated within metal vapor generated from the contacts during the breaking process. At the application currents (rated breaking current is 4kA) used in the IVTI, the arc can be assumed to be in Natural Diffuse Mode [2]. However, the arc generated within the IVTI should also be assumed to be gradually twisted and separated as the rotary contact moves along a selected locus during the break operation.…”
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