UNE-EN 61000-4-12:2007 Electromagnetic compatibility (EMC) -- Part 4-12: Testing and measurement techniques - Ring wave immunity test (IEC 61000-4-12:2006).
2018UNE-EN 61000-4-12:2018 Electromagnetic compatibility (EMC) - Part 4-12: Testing and measurement techniques - Ring wave immunity test
2007UNE-EN 61000-4-12:2007 Electromagnetic compatibility (EMC) -- Part 4-12: Testing and measurement techniques - Ring wave immunity test (IEC 61000-4-12:2006).