5. PICK UP & DROP OFF TEST: 50/50N: Over Current Relay Current Current Earth Fault Relay Setting Setting (N) R Y B IThreshold IThreshold (50) P/U D/O P/U D/O P/U D/O (51) P/U D/O Amps Amps A A A A A A A A 0.5 A 0.5 A 51/51N IEC NORM. INV. CURVE: Over Current Relay Current Current Earth Fault Relay Setting Setting (N) R Y B IThreshold IThreshold (50N) P/U D/O P/U D/O P/U D/O (51N) P/U D/O Amps Amps A A A A A A A A 1.2 A 0.3 A 6. TIMING TEST: 50/50N: Current Setting Over Current Relay Current Earth Fault IThreshold Setting IThreshold Relay (N) (50) SEC (51) SEC R Y B 80 msec 80 msec 51/51N IEC CURVE: Current Current Setting Over Current Relay Setting Earth Fault IThreshold IEC Curves IThreshold Relay (N) (50N) SEC R Y B (51N) SEC 2xIset 0.2 NI 0.2 NI IEC S INVERSE 10xIset
5. PICK UP & DROP OFF TEST: 50/50N: Current Setting IThreshold (50) Amps Over Current Relay Current Setting IThreshold (51) Amps Earth Fault Relay (N) R Y B P/U A D/O A P/U A D/O A P/U A D/O A P/U A D/O A 0.5 A 0.5 A 51/51N IEC NORM. INV. CURVE: Current Setting IThreshold (50N) Amps Over Current Relay Current Setting IThreshold (51N) Amps Earth Fault Relay (N) R Y B P/U A D/O A P/U A D/O A P/U A D/O A P/U A D/O A 1.2 A 0.3 A 6. TIMING TEST: 50/50N: Current Setting IThreshold (50) SEC Over Current Relay Current Setting IThreshold (51) SEC Earth Fault Relay (N) R Y B 80 msec 80 msec 51/51N IEC CURVE: Current Setting IThreshold (50N) SEC IEC Curves Over Current Relay Current Setting IThreshold (51N) SEC Earth Fault Relay (N) R Y B 2xIset 0.2 NI IEC S INVERSE 0.2 NI 10xIset