The invention relates to the distribution of electrical energy, in particular to a device for compensation of capacitive earth fault current in electric networks with isolated neutral. It invited to a high-speed switches automatically arcing reactor. New is that it entered unit switches and automatic switching control of switches in the tank installed Additional reactors which are connected to additional inputs. The additional reactors have different rated currents, for example, the ratio of the rated currents of 1: 2: 4: 8, ..., and the nominal current of one of these reactors - not more than the normalized current regulation stage. Compared with the reactors controlled magnetization, the proposed reactor current has virtually no harmonics, as compared to the plunger reactors there is an advantage in speed. Compared with the prior art, it provides automatic adjustment of current and has the required performance of a regulatory requirement.
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