DEVICE FOR CONTROLLING TWO LOADS IN A 380/220 V LINE Russian patent published in 2021 - IPC H05B39/04 H02J4/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to devices for lighting and heating of premises. The protective zero conductor, the working zero conductor, and the first, second and third phase wires are connected through the circuit breaker to the collecting buses of the distribution cabinet. After the circuit breaker, a programmable relay is switched on between the third phase and the zero working wire, connected by four outputs to four intermediate relays, the first, second and third of which each has one closing output contact, and the fourth one has two closing output contacts. The input of the first load is connected to the first phase wire, the output of which is connected to the output of the second load and through the output contact of the second intermediate relay, shunted by the first output contact of the fourth relay, with the zero working wire, connected also through the output contact of the first intermediate relay to the input of the second load, to which the second phase wire is connected through the output contact of the second intermediate relay, shunted by the second output contact of the fourth intermediate relay.

EFFECT: automatic control of two equal loads in four operating modes with different power.

1 cl, 1 dwg