FIELD: electricity.
SUBSTANCE: device for protection of equipment connected to a high-voltage DC line comprises a current valve (12), comprising at least one semiconducting device (13) and a rectifying element (14), connected back-to-back with it. A discharger (16) for protection against spark overvoltages is configured to connect the specified current valve (12) to the specified line (2), and a control unit (15) is configured to control the current valve (12), so that it serves as a conductor for removal of current from the line (2) to the ground (11).
EFFECT: protection reliability improvement.
13 cl, 3 dwg
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