Method for cutting off an electric arc, method and device for protecting an installation against voltage surges

摘要

The method comprising displacing the formed electric arc towards an electrode located in an intermediate position between both main electrodes; a separating the formed electric arc into two secondary electric arcs, a semiconductor switch, normally open, connecting the intermediate electrode to one of the main electrodes; closing the semiconductor switch in order to extinguish the secondary electric arc between both electrodes connected by the semiconductor switch; opening the semiconductor switch in order to extinguish the other secondary electric arc. The disclosure further relates to a protection method and a protection device, notably a protection device specially designed for applying the method.

主权项

1. A method for cutting off an electric arc being formed between two main electrodes, the method comprising:
displacing the formed electric arc towards an electrode located in an intermediate position between both main electrodes; separating the electric arc formed into two secondary electric arcs between the main electrodes and the intermediate electrode, a semiconductor switch, normally open, connecting the intermediate electrode to one of the main electrodes; closing the semiconductor switch for extinguishing the secondary electric arc between both electrodes which are connected by the semiconductor switch; and opening the semiconductor switch in order to extinguish the other secondary electric arc.