GENERATOR USING PASSIVE-ACTIVE METHOD FOR SIGNAL CURRENT INPUT IN THREE-PHASE POWER MAINS Russian patent published in 2004 - IPC

FIELD: electrical engineering; organizing communication channels in three-phase mains. SUBSTANCE: generator designed for organizing communication channels using three-phase, 0.4 to 35 kV power mains without introducing wave traps in them is provided with newly introduced low-voltage winding of 10/0.4 kV transformer phase C, second inductance coil, and second capacitor, all being respectively connected to generator circuit. In this way circuit for first-capacitor discharge through resistor is eliminated, power loss is reduced by 160 W, transistor can be used as switch for inputting current in power mains. EFFECT: reduced power requirement of generator. 1 cl, 2 dwg