This Technical Specification provides the requirements for compatibility of systems defined and good practice for three phase AC 400 V/50 Hz shore (external) supply systems. It focuses on describing the defined interfaces regarding electrical power supply in stations, depots/workshops and stabling points into the rail vehicle.

This Technical Specification provides recommended characteristics of power supply and its connectors.

The electrical characteristics relate to 3 AC 400 V/50 Hz.

Sensing of phase rotation is outside the scope of this Technical Specification but it is assumed that phase sequence between the external supply and the railway vehicle is synchronised.