LST EN 60909-3-2010 Short-circuit currents in three-phase a.c systems -- Part 3: Currents during two separate simultaneous line-to-earth short-circuits and partial short-circuit currents flowing through earth (IEC 60909-3:2009)
2010LST EN 60909-3-2010 Short-circuit currents in three-phase a.c systems -- Part 3: Currents during two separate simultaneous line-to-earth short-circuits and partial short-circuit currents flowing through earth (IEC 60909-3:2009)