In light of recent discussions about overvoltage protection, the following document announcement from IEC should be of interest.
IEC/TR <https://domino.iec.ch/webstore/webstore.nsf/all/56F1A2F4B4FAAFADC1256BE 30010EC05?OpenDocument> 62066 (2002-06) Ed. 1.0 Surge overvoltages and surge protection in low-voltage a.c. power systems - General basic information Presents a general overview on the different kinds of surge overvoltages that can occur on low-voltage installations. Typical surge magnitude and duration as well as frequency of occurrence are described. Information on overvoltages resulting from interactions between power system and communications system is also provided. Additionally, general guidelines are given concerning surge protection means and systems on the basis of availability and risk considerations, including interactions and the need for coordination and consideration of temporary overvoltages in the selection of surge-protective devices. ICS codes: 29.020, 91.140.50 - TC 64 - 131pp. - CHF 187,00 for single user and CHF 243,10 for a three-user network license Bob Johnson ITE Safety <http://www.itesafety.com/>
