prSRPS EN 50746:2024

Railway applications – Rolling stock - Electrotechnical requirements and test methods for DAC (DAC - Digital automatic coupler for freight)

Scope

Provide specification and requirements to enable interoperability of freight wagons, freight locomotives, and external power
supply with digital automatic coupler (DAC) on the European railway network.

Specification of the DAC electrical coupler interfaces for use in rail freight operation:
- Interoperability interface specification of the electric coupler: contact properties, electrical connector etc. taking into account the
contact requirements from the respective standard for data communication
- Parameters of the voltage supply network: voltage type, level, electrical current, tolerances etc.
- Insulation, electric safety, and electromagnetic compatibility requirements
- Requirements for power cable, cable routing from coupler to wagon, protection for power and communication cable, using the
communication cable defined in the respective standard for data communication
- Electrical interface from coupler cable to the wagon
- Requirements due to functional safety goals
- Test methods for the electric coupler and the coupler cable

Related directives

NOTE: If the word "harmonized" (marked in green) is not found in the field with the name of the directive, it means that the European standard is not cited in the OJEU.