| 摘要 |
FIELD: railway transport; diagnostic for electrical equipment. ^ SUBSTANCE: invention can be used on electric rolling stock with impulse governors of traction motors. Proposed device contains electric locomotive traction current sensor placed on series in electric circuit between contact wire, pantograph, master switch, traction electrical equipment, wheels of electric locomotive and rails. Output of traction current sensor is connected to input of traction current dc component separation unit and to input of traction current ac component separation unit whose output is connected to series-connected ac current amplifier with controlled gain band-pass filter, simulating unit of phase sensitive relay of railway automatic track circuit, time interval analyzer and recording and display unit. Control input of ac current amplifier with controlled gain is connected to output of traction current dc component separation unit. Invention provides separation and recording of time intervals during which level of ac component of traction current exceeds value normalized according to requirements of electromagnetic compatibility with due account of phase relations and value of dc component of traction current. ^ EFFECT: improved reliability of checking. ^ 1 dwg |
