| 摘要 |
The present invention provides an apparatus for measuring the impedance of a trolley catenary. The apparatus is mounted on a crossing which includes a pantagraph connected to a trolley line and a ground part connected through a rail and which is movable on the rail. The apparatus includes a power analysis unit (P) disposed between the pantagraph and the ground part and adapted to measure a voltage, a current and a power factor; and a current limiter (110) connected in series between a rear end of the power analysis unit and the ground part. As described above, the present invention is advantageous in that it can measure the impedance of a trolley catenary by adjusting an actual fault current, which is currently being activated. |
