An engineer once downloaded a "free" IEC 61439-1 PDF from a file-sharing site. The file had a tied to a leaked corporate account. His company was fined €8,000. Not interesting in a good way.
The is a copyright-protected organization. Their standards are sold to fund ongoing development, consensus meetings, and updates. Downloading a full, current PDF from a file-sharing site is almost always a copyright violation. Iec 61439-1 Pdf Free Download Fixed
Most national regulations require the current version (2020 + amendments). Using an old version voids your compliance and liability insurance. An engineer once downloaded a "free" IEC 61439-1
Explicit additions were made to address the growing use of direct current in industrial applications. and updates. Downloading a full