The arcing between the pantograph and the contact wire is a common phenomenon and. It is more predominant at high speed, increasing load, and in cold icy weather conditions. The attachment and detachment of the contact wire is similar to switching on and off an inductive load.
Arcing at the pantograph distorts the regular waveform of the supply voltage and current and generates transients which propagate along the railway system, including tracks, track circuits, other locomotives on the same track, substation supply transformer, vehicle transformer, etc.. This causes interference voltages and currents in the frequency range from DC to several MHz and radio frequency emissions up to GHz.
MERMEC Group Electric Arcs Detection System (EADS) detects the presence of electrical arcs and their duration at speeds of up to 320 km/h. The data can be correlated with the contact line data. The measuring system is able to distinguish arcing from scintillating, by means of programmable threshold filtering arcs with lower energy. Special light filters make the system insensible to sunlight.
SERVED RAILWAYS
 |
High Speed |
 |
Main & Regional |
 |
Mass Transit & Light |
 |
Heavy-Haul |
TECHNICAL SPECIFICATIONS
| Product Family |
Overhead Line Measuring Systems |
| Technology |
Optical, No-contact |
| Parameters |
› Arc Location (Kilometric position)
› Arc Duration
› Arc Intensity
› Sum of all arcs duration
› Number of all Arcs (Having minimum duration of 0.015s)
› Largest Arc Duration
› Percentage of arcing |
| Measuring Speed |
Up to 320 km/h (up to 200 mph) |
| More info? |
Use functions below "Request the Brochure" or "Ask the Expert" |
