The International Electrotechnical Commission has released edition 2.1 of IEC 60364-4-44:2007+AMD1:2015 CSV. This standard applies to “Low-voltage electrical installations – Part 4-44: Protection for safety – Protection against voltage disturbances and electromagnetic disturbances.” The standard is available for purchase on the IEC’s website.
“IEC 60364-4-44:2007+A1:2015 are intended to provide requirements for the safety of electrical installations in the event of voltage disturbances and electromagnetic disturbances generated for different specified reasons. This consolidated version consists of the second edition (2007) and its amendment 1 (2015). Therefore, no need to order amendment in addition to this publication.”
*Description from the IEC website.