PICK UP MEASURED MEASURED PHASE PICK UP(A) SETTING DROP OFF (A) 0.15 R – Note: pick up error =±5% Drop off Level = >95% of pick up 120 × Tp Long Inverse t (s) = --------------------------- (I/I p)^ 1 - 1 10 * Is 2 * Is 5 * Is PHASE sec sec. sec. sec. sec sec EXP ACT EXP ACT EXP ACT PHASE-E/F LV NUTRAL CUREENT ALARM: SET PICK UP SET TIME (s) DROP OFF (A) OPTD TIME (s) CURRENT (A) CURRENT (A) 0.100 5 sec Note: pick up error =±5% Drop off Level = >95% of pick up RESTRICTED EARTH FAULT PROTECTION (REF): HV SIDE REF Pickup Test. Settings: IS1 0.1 A K1 0 % Is2 0.9 A 150 % 0.0 Sec
PHASE PICK UP SETTING MEASURED PICK UP(A) MEASURED DROP OFF (A) – R 0.15 Note: pick up error =±5% Drop off Level = >95% of pick up 120 × Tp Long Inverse t (s) = --------------------------- (I/I p)^ 1 - 1 PHASE 2 * Is 5 * Is 10 * Is EXP sec ACT sec. EXP sec. ACT sec. EXP sec ACT sec PHASE-E/F LV NUTRAL CUREENT ALARM: SET CURRENT (A) SET TIME (s) PICK UP CURRENT (A) DROP OFF (A) OPTD TIME (s) 0.100 5 sec Note: pick up error =±5% Drop off Level = >95% of pick up RESTRICTED EARTH FAULT PROTECTION (REF): HV SIDE REF Pickup Test. Settings: IS1 0.1 A K1 0 % Is2 0.9 A 150 % 0.0 Sec