This International Standard establishes general principles for the identification of terminals of
objects within a system, applicable to all technical areas (for example mechanical
engineering, electrical engineering, construction engineering, process engineering). They can
be used for systems based on different technologies or for systems combining several
technologies.
Requirements for marking of terminal designations on products are not part of this publication.
BS EN 61666:2010 history
2021BS EN 61666:2010+A1:2021 Industrial systems, installations and equipment and industrial products. Identification of terminals within a system
2010BS EN 61666:2010 Industrial systems, installations and equipment and industrial products. Identification of terminals within a system
1997BS EN 61666:1997 Identification of terminals within a system