EN 60909-3:2003 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
2010EN 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
2003EN 60909-3:2003 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