For new and maintained continuous welded rail lines, it is vital to obtain the voltage supply complying with relevant procedure and to preserve voltage conditions. Non-destructive, fast and reliable voltage status measurement and evaluation of the railway lines is carried out by ULTRA RS. Measuring by ultrasonic principle, ULTRA RS determines the areas where the track is likely to have a loss along with voltage accumulation in the railway tracks. In order for the ULTRA RS device developed for this purpose by cooperation of the French railways SNCF and universities in France and used in the said tracks to control voltage nto be used in Turkey, French authorities provided the Panoray engineers with a four-day field and office trainings in November 2018.