EN 60204-3-1:1990

This clause of Part 1 is applicable except as follows: 1.1 Replacement: This standard applies to both the electrical and the electronic equipment of sewing machines, sewing units and sewing systems, designed especially for professional use in the sewing industry. This standard applies to equipment intended for industrial, commercial or laboratory, but not household, applications (for more details on the latter, see EN 60335-2-28). This standard applies to sewing units and systems which are installed in dry and well-kept clean locations, e.g. in the clothing industry, and which process dry sewing material. Where sewing units and systems are used in other than dry and well-kept clean locations, more stringent measures may be necessary, which have to be agreed.