DEVICE FOR CENTRALIZED BACK-UP PROTECTION OF HEXAGON CONNECTIONS Russian patent published in 2022 - IPC H02H7/22 

FIELD: relay protection technology.

SUBSTANCE: invention relates to relay protection technology. The effect is achieved by introducing the first and second microprocessors with eight outputs, the first and second signaling units, six majority elements, the second and third sources of direct operating current, and for each phase of each connection, the first and second reed switches with a winding located near the current conductor, connecting the connection with a common connection point of its switches. The contacts and windings of all the first reed switches are connected to the first microprocessor through the first amplifiers, limiters, full-wave rectifiers and the second connecting wires, contacts and windings of all second reed switches through the second amplifiers, limiters, full-wave rectifiers and connecting wires are connected to the second microprocessor, all measurement and logic blocks are made in the form of a third microprocessor with six outputs, the first contacts of the "Off" and "On" position relays of all switches of the circuit connected to a third microprocessor, and the second and third contacts - to the first and second microprocessors, the second and third sources of constant operating current are connected to the contacts of the first and second reed switches and to the first and second

microprocessors, respectively.

EFFECT: increasing the reliability of operation and non-operation of the device, hardware reliability and the possibility of pre-scheduled checks to determine malfunctions in the device and malfunctions in the operating current circuits.

1 cl, 3 dwg