FIELD: railway automation.
SUBSTANCE: invention relates to railway automation and telemetry, particularly, to track circuits used at stations for electric traction of trains. Device comprises a rail line with insulating joints, at the ends of which traction windings of choke-transformers are connected, to the additional winding of the choke-transformer a band-pass filter, a threshold device, a time selector and a memory element with a light-emitting diode indicator are connected.
EFFECT: providing reliability of result of determination of traction current asymmetry.
2 cl, 2 dwg
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