Reference Date Title Language EN 61660-2:1997 1997-07-24 Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 2: Calculation of effects     EN 61660-1:1997 1997-07-24 Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 1: Calculation of short-circuit currents     EN 60865-1:1993 1993-12-20 Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods     EN 60909-3:2010 2010-03-12 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     EN 60909-0:2001 2001-08-13 Short-circuit currents in three-phase a.c. systems - Part 0: Calculation of currents     EN 60865-1:2012 2012-03-23 Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods