BS EN 60570:2003+A1:2018

This International Standard applies to the following track systems with two or more poles for the connection of luminaires to the electrical supply consisting of, either a system with a rated voltage not exceeding 440V between poles (live conductors) with provision for earthing (classI) and a rated current not exceeding 16A per conductor, or a SELV system with a rated voltage not exceeding 25V a.c. or 60V d.c. without provision for earthing (classIII) and a rated current not exceeding 25A per conductor, or a combination of the two systems mentioned above (mixed supply system) for the connection of both mains voltage luminaires (classI or II) and SELV supplied luminaires (classIII) simultaneously, but in different sector openings (mains or SELV). The track systems may also provide for the mechanical support of the luminaires. It applies to track systems designed for ordinary interior use for mounting on, or flush with, or suspended from walls and ceilings. These track systems are not intended for locations where special conditions prevail as in ships, vehicles and the like and in hazardous locations, for example, where explosions are liable to occur.