Schweitzer Engineering Laboratories SEL-311L, Instruction Manual, Page: 348 / 734

9-10 Setting the Relay Date Code 20010625
SEL-311L Instruction Manual
Row Bit Definition
Primary
Application
3 Z1T Zone 1 phase and/or ground distance, time delayed
(see Figure 3.39)
Z2T Zone 2 phase and/or ground distance, time delayed
(see Figure 3.39)
50P1 Level 1 phase instantaneous overcurrent element
(A, B, or C) above pickup setting 50P1P; see
Figure 3.42)
67P1 Level 1 torque controlled phase instantaneous
overcurrent element (derived from 50P1; see
Figure 3.42)
67P1T Level 1 phase definite-time overcurrent element
67P1T timed out (derived from 67P1; see
Figure 3.42)
50G1 Level 1 residual ground instantaneous overcurrent
element (residual ground current above pickup
setting 50G1P; see Figure 3.45)
67G1 Level 1 torque controlled residual ground
instantaneous overcurrent element (derived from
50G1; see Figure 3.45)
67G1T Level 1 residual ground definite-time overcurrent
element 67G1T timed out (derived from 67G1; see
Figure 3.45)
4 51G Residual ground current above pickup setting 51GP
for residual ground time-overcurrent element 51GT
(see Figure 3.48) Testing, Control
51GT Residual ground time-overcurrent element 51GT
timed out (see Figure 3.48) Tripping
51GR Residual ground time-overcurrent element 51GT
reset (see Figure 3.48) Testing
LOP Loss-of-potential (see Figure 4.1) Testing, Special
directional
control schemes
ILOP Internal loss-of-potential (see Figure 4.1) Distance
directional
control enable