DEVICE FOR RECEIVING SIGNALS IN THREE-PHASE SUPPLY LINE Russian patent published in 1995 - IPC

FIELD: electric engineering. SUBSTANCE: device has power transformer 1, first and second voltage filters 2 and 3 for symmetrical constituents, first and second low-pass filters 4 and 5, phase detector 6, mixer 7, low-pass filter 8, heterodyne 9, first and second filters 10 and 11 for currents of symmetrical constituents, third and fourth low-pass filters 12 and 13, phase detector 14, transmitter 15, first, second and third communication transformers 16, 17 and 18. EFFECT: decreased power consumption. 1 dwg