scope:

This International Standard applies only to newly manufactured static energy meters of accuracy class 1 or higher, for the measurement of alternating current electrical energy or direct current electrical energy absorbed by trains for following traction systems: - 25 kV (single phase) at 50 Hz, - 15 kV (single phase) at 16,7 Hz, - 3 kV, 1,5 kV and 0,75 kV d.c. It applies only to static meters consisting of a measuring element and register(s) enclosed together in a meter enclosure. It does not apply to: a) portable meters; b) data interfaces eventually to system on board; c) data management system; d) data interfaces with telecommunication system; e) global measurement system on board, also if voltage and current transducers are considered of accuracy class 0.5. If these transducers are multi-service, specific and separate outputs will be considered.