Schweitzer Engineering Laboratories SEL-311L, Instruction Manual, Page: 370 / 734

9-32 Setting the Relay Date Code 20010625
SEL-311L Instruction Manual
Row Bit Definition
Primary
Application
59 87LOPC C-Phase differential current enable level detector
(see Figure 3.17)
87LCE C-Phase differential calculation enable
(see Figure 3.17)
R87LC C-Phase restrain region detection output
(see Figure 3.17)
CTAC C-Phase CT alarm level detector (see Figure 3.17) Alarming
PQ87LC Protection quality 87LC alarm
T51PT Tapped load phase time-overcurrent element T51PT
timed out (see Figure 3.23) Tripping
T50P Tapped load phase instantaneous overcurrent element
above pickup setting T50P (see Figure 3.20)
T50PT Delayed definite-time phase-overcurrent element
timed out (see Figure 3.20)
60 87LOP2 Negative-sequence current enable level detector
(see Figure 3.18)
87L2E Negative-sequence differential calculation enable
(see Figure 3.18)
Testing, Control
R87L2 Negative-sequence restrain region detection output
(see Figure 3.18)
B87L2 Extended 87L2 block (see Figure 3.18)
PQ87L2 Protection quality 87L2 alarm Alarming
T51QT Tapped load negative-sequence time-overcurrent
element T51QT timed out (see Figure 3.25) Tripping
T50Q Tapped load negative-sequence instantaneous
overcurrent element above pickup setting T50QP
(see Figure 3.22)
T50QT Delayed definite-time negative-sequence overcurrent
element timed out (see Figure 3.22)
61 87LOPG Zero-sequence current enable level detector
(see Figure 3.19)
87LGE Zero-sequence differential calculation enable
(see Figure 3.19)
Testing, Control
R87LG Zero-sequence restrain region detection output
(see Figure 3.19)
B87LG Extended 87LG block (see Figure 3.19)
PQ87LG Protection quality 87LG alarm Alarming