Reference Date Title Language EN 60099-1:1994 1994-05-10 Surge arresters - Part 1: Non-linear resistor type gapped surge arresters for a.c. systems     EN 60099-4:2004 2004-08-31 Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems     EN 60099-1:1994/A1:1999 1999-12-08 Surge arresters - Part 1: Non-linear resistor type gapped surge arresters for a.c. systems     EN 60099-5:1996/A1:1999 1999-12-08 Surge arresters - Part 5: Selection and application recommendations     EN 60099-5:1996 1996-10-18 Surge arresters - Part 5: Selection and application recommendations     EN 60099-4:2004/A1:2006 2006-08-10 Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems     EN 60099-4:2004/A2:2009 2009-05-29 Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems     EN 60099-8:2011 2011-04-15 Surge arresters - Part 8: Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a.c. systems above 1 kV