Siemens – 7SA5221-4DB00-4QP4
Distance protection; housing: 1/1 x 19”; 24 x Binary Input, 20 x Binary Output, 12 x Fast Relays; Trip mode 1-and 3-pole ; Port E : empty; DC 60 V to 125 V; measuring inputs: 4 x I, 4 x V, Iph = 1 A 5), Ie = sensitive (min. = 0,003 A); security functions: ANSI : 68, 68T, 79, 25, 50BF, 29, 59, 50N, 51N, 67N.