Sel SEL-421 - Page 109

R.1.67
Date Code 20111215 Reference Manual SEL-421 Relay
Protection Functions
Instantaneous Line Overcurrent Elements
67G4 Level 4 definite-time residual ground directional overcurrent element
67G1T Level 1 time-delayed definite-time residual ground directional overcurrent
element
67G2T Level 2 time-delayed definite-time residual ground directional overcurrent
element
67G3T Level 3 time-delayed definite-time residual ground directional overcurrent
element
67G4T Level 4 time-delayed definite-time residual ground directional overcurrent
element
Table 1.55 Residual Ground Instantaneous/Definite-Time Line Overcurrent
Relay Word Bits (Sheet 2 of 2)
Name Description