| 摘要 |
FIELD: railway transport; signaling and communication. ^ SUBSTANCE: invention is designed for use in interval traffic control at stations at ac electric traction. Proposed circuitry contains two track circuits limited by insulated rail joints, inductor-transformers of supply and relay ends made without air gap with main and additional windings, and inductor jumpers. Supply and relay end devices are connected to additional windings of inductor-transformers. Design peculiarity of proposed device, as compared with known ones, is that leads of main winding of one of inductor-transformers are connected through balancing resistors with equal resistances and inductor jumpers to corresponding track circuits. Resistances of balancing resistors are chosen to exceed, not less than five times, track circuit resistance value and resistance of main winding of inductor-transformers. ^ EFFECT: improved operation reliability of track circuitry. ^ 1 dwg |
