PT Unknown AU Francesc Tanarro Marquez Pau Gratacos Marti F. Javier Sanchez Joan Ramon Jimenez Minguell Coen Antens Enric Sala i Esteva AU ALSTOM Transport SA TI A device for monitoring condition of a railway supply PY 2012 AB of a railway supply line when the supply line is in contact with a head of a pantograph of a vehicle in order to power said vehicle . The device includes a camera ( for monitoring parameters indicative of operating capability of said supply line. The device is intended to monitor conditiontive of operating capability of said supply line. The device includes a reflective element. comprising a pattern , intended to be arranged onto the pantograph head . The camera is intended to be arranged on the vehicle (10) so as to register the pattern position regarding a vertical direction. ER