P.3.202
SEL-411L Relay Protection Manual Date Code 20151029
Protection Functions
Instantaneous Line Overcurrent Elements
Table 3.105 Phase Instantaneous/Definite-Time Line Overcurrent
Relay Word Bits
Name Description
50P1 Level 1 instantaneous phase overcurrent element
50P2 Level 2 instantaneous phase overcurrent element
50P3 Level 3 instantaneous phase overcurrent element
50P4 Level 4 instantaneous phase overcurrent element
67P1 Level 1 definite-time phase directional overcurrent element
67P2 Level 2 definite-time phase directional overcurrent element
67P3 Level 3 definite-time phase directional overcurrent element
67P4 Level 4 definite-time phase directional overcurrent element
67P1T Level 1 time-delayed definite-time phase directional overcurrent element
67P2T Level 2 time-delayed definite-time phase directional overcurrent element
67P3T Level 3 time-delayed definite-time phase directional overcurrent element
67P4T Level 4 time-delayed definite-time phase directional overcurrent element
Table 3.106 Negative-Sequence Instantaneous/Definite-Time Line
Overcurrent Relay Word Bits
Name Description
50Q1 Level 1 instantaneous negative-sequence overcurrent element
50Q2 Level 2 instantaneous negative-sequence overcurrent element
50Q3 Level 3 instantaneous negative-sequence overcurrent element
50Q4 Level 4 instantaneous negative-sequence overcurrent element
67Q1 Level 1 definite-time negative-sequence directional overcurrent element
67Q2 Level 2 definite-time negative-sequence directional overcurrent element
67Q3 Level 3 definite-time negative-sequence directional overcurrent element
67Q4 Level 4 definite-time negative-sequence directional overcurrent element
67Q1T Level 1 time-delayed definite-time negative-sequence directional overcurrent
element
67Q2T Level 2 time-delayed definite-time negative-sequence directional overcurrent
element
67Q3T Level 3 time-delayed definite-time negative-sequence directional overcurrent
element
67Q4T Level 4 time-delayed definite-time negative-sequence directional overcurrent
element
Table 3.107 Residual Ground Instantaneous/Definite-Time Line Overcurrent
Relay Word Bits (Sheet 1 of 2)
Name Description
50G1 Level 1 instantaneous residual ground overcurrent element
50G2 Level 2 instantaneous residual ground overcurrent element
50G3 Level 3 instantaneous residual ground overcurrent element
50G4 Level 4 instantaneous residual ground overcurrent element
67G1 Level 1 definite-time residual ground directional overcurrent element
67G2 Level 2 definite-time residual ground directional overcurrent element
67G3 Level 3 definite-time residual ground directional overcurrent element