DIN EN 60255-22-5:2011 Measuring relays and protection equipment - Part 22-5: Electrical disturbance tests - Surge immunity test (IEC 60255-22-5:2008); German version EN 60255-22-5:2011
2014DIN EN 60255-26:2014 Measuring relays and protection equipment - Part 26: Electromagnetic compatibility requirements (IEC 60255-26:2013); German version EN 60255-26:2013 + AC:2013
2011DIN EN 60255-22-5:2011 Measuring relays and protection equipment - Part 22-5: Electrical disturbance tests - Surge immunity test (IEC 60255-22-5:2008); German version EN 60255-22-5:2011