REDUNDANT RELAY DEVICE Russian patent published in 2019 - IPC H02H3/00 H01H47/00 

FIELD: electrical equipment.

SUBSTANCE: invention relates to electrical equipment. Technical result consists in providing galvanic isolation between the control bus and the load power bus, the ability to include separate main or backup remote switches, increasing the device's controllability without introducing additional technological conclusions, is achieved by introducing into the redundant relay device of the second main and backup remote switches, the first, second and third additional control relays, the first, second and third trip inputs, respectively, of the first, second and third main and additional control relays; switching contact of the first switching contact group of the first and third control relay is combined with the normally open contact of the second switching contact group of the second control relay, normal open contact of the first and second switching contact group of the third control relay is combined with the switching contact of the second switching contact group of the first control relay, the switching contact of the second switching contact group of the second control relay is connected to the first terminals of the switching windings of the main remote switches, and the switching contact of the second switching contact group of the third control relay is connected to the first terminals of the switching windings of the backup remote switches; the first terminals of the windings of the additional control relays are connected respectively to the first, second and third additional outputs of the control unit, and the second terminals are connected to the control unit power bus, the contacts of the additional control relays are connected in a similar way to the main ones, the switching contact of the second switching contact group of the second additional control relay is connected to the first terminals of the tripping windings of the first main and backup remote switches, and the switching contact of the third additional control relay is connected to the first terminals of the windings of the second main and backup remote switches, the second terminals of the windings of the main and backup remote switches are connected to the second power bus; contacts of the main and backup remote switches are connected according to the scheme of parallel-serial redundancy.

EFFECT: technical result consists in providing galvanic isolation between the control bus and the load power bus, the ability to include main or backup remote switches separately, increasing device controllability without introducing additional technological leads.

1 cl, 3 dwg, 1 tbl