This European Standard specifies the interoperability requirements for the tractor/trailer and/or transport tank/trailer plug/socket for the use in hazardous areas, being:
- the connection used for the supply Type A and supply Type S electrical power to service equipment; and
- the supply characteristics for each operating mode.
This plug/socket combination includes provisions for future connections including data transfer.
The plug/socket connection is not used for purposes which are specified in other standards for truck - trailer connections e.g. ISO 12098 and ISO 7638-1.