DEVICE FOR CURRENT PROTECTION OF A THREE-PHASE LINE SECTION FROM CUTTING A ZERO WIRE AND / OR ONE OF PHASE WIRES

摘要

The utility model relates to electrical engineering, in particular to devices for protecting a three-phase line up to 1000 V from a break in the neutral wire and / or one of the phase conductors.;A device for the current protection of a three-phase line segment from the breakage of a neutral wire and / or the termination of one of the phase conductors, comprising a symmetrical three-phase load forming an artificial zero point and an actuating member, the artificial zero point being connected by a conductor to zero conductor and the connecting conductor passing through a transformer the output of which through the amplifier is connected to the input of the actuator.;The device can improve the reliability of power supply, the safety of operation of three-phase networks up to 1000 V and protection of the consumer group from the breakage of the zero wire and / or one of the phase conductors.