BS EN 60909-3:2010(2013) 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
2010BS EN 60909-3:2010 Short-circuit currents in three-phase a.c systems - Currents during two separate simultaneous line-to-earth short-circuits and partial short-circuit currents flowing through earth
2004BS EN 60909-3:2003 Short-circuit current calculation in three-phase a.c. systems - Currents during two separate simultaneous single phase line-to- earth short circuits and partial short-circuit currents flowing through earth