FIELD: electric power engineering.
SUBSTANCE: method of signaling on unauthorized supply of voltage to low-voltage buses and interlocking from reverse transformation at double-transformer substation 10/0.4 kV provides for disconnection of input automatic switching devices from low side of double-transformer substation, as well as signaling and informing personnel of electric network organization, preventing development of situation, in which people can get under voltage due to voltage supplied unauthorized into network from low side of double-transformer substation, or into outgoing lines, and by means of its transformation with power transformers, supplied to high side of double-transformer substation and, accordingly, into electric network on high side, as well as its unauthorized supply to low-voltage line.
EFFECT: higher safety of electric networks.
1 cl, 1 dwg
