Attributes . fault locator 21FL || synchro-check 25 || undervoltage 27 || directional active underpower 37P || broken conductor 46BC || thermal overload protection 49 || earth fault overcurrent 50N/51N || phase overcurrent 50/51 || breaker failure 50BF || switch ON to fault (SOTF) || capacitor bank unbalance 51C || voltage-restrained overcurrent 51V || capacitor overvoltage 59C || overvoltage 59 || earth fault overvoltage 59N || directional phase overcurrent 67 || directional earth fault 67N || transient earth fault 67NI || H2 detection 68H2 || H5 detection 68H5 || recloser 79 || underfrequency 81/81N || rate of change of frequency 81R || lockout relay 86 || programmable stages 99 || programmable curve || cold load pick-up . Names