FIELD: technology for protecting electric plants by voltage up to 1 kV from emergency modes, which can cause electric damage to people and animals, and also fires from short circuits.
SUBSTANCE: device has differential transformer of zero series current, relay affecting automatic switch, while through port of core of transformer zero and three phased wires of aerial line pass, and also contains eight capacitors with working voltage exceeding phase voltage of aerial line.
EFFECT: improved safety of people and animals in case of tears of aerial line cables.
1 dwg
