4-28 Control Logic Date Code 20080110
SEL-387E Instruction Manual
Row Bit Definition
3 50A13 Winding 1 A-phase instantaneous O/C Level 3 element picked up
50B13 Winding 1 B-phase instantaneous O/C Level 3 element picked up
50C13 Winding 1 C-phase instantaneous O/C Level 3 element picked up
50P13 50A13 + 50B13 + 50C13
50A14 Winding 1 A-phase instantaneous O/C Level 4 element picked up
50B14 Winding 1 B-phase instantaneous O/C Level 4 element picked up
50C14 Winding 1 C-phase instantaneous O/C Level 4 element picked up
50P14 50A14 + 50B14 + 50C14
4 50N11 Winding 1 residual definite-time O/C Level 1 element picked up
50N11T Winding 1 residual definite-time O/C Level 1 element timed out
50N12 Winding 1 residual instantaneous O/C Level 2 element picked up
51N1 Winding 1 residual inverse-time O/C element picked up
51N1T Winding 1 residual inverse-time O/C element timed out
51N1R Winding 1 residual inverse-time O/C 51N1 element is reset
NDEM1 Winding 1 residual demand current threshold exceeded
OC1 Breaker 1 OPEN command execution
5 50Q11 Winding 1 neg.-seq. definite-time O/C Level 1 element picked up
50Q11T Winding 1 neg.-seq. definite-time O/C element timed out
50Q12 Winding 1 neg.-seq. instantaneous O/C Level 2 element picked up
51Q1 Winding 1 neg.-seq. inverse-time O/C element picked up
51Q1T Winding 1 neg.-seq. inverse-time O/C element timed out
51Q1R Winding 1 neg.-seq. inverse-time O/C 51Q1 element is reset
QDEM1 Winding 1 neg.-seq. demand current threshold exceeded
CC1 Breaker 1 CLOSE command execution
6 50P21 Winding 2 phase definite-time O/C Level 1 element picked up
50P21T Winding 2 phase definite-time O/C Level 1 element timed out
50P22 Winding 2 phase instantaneous O/C Level 2 element picked up
51P2 Winding 2 phase inverse-time O/C element picked up
51P2T Winding 2 phase inverse-time O/C element timed out
51P2R Winding 2 phase inverse-time O/C 51P2 element is reset
PDEM2 Winding 2 phase demand current threshold exceeded
OCB O/C element B-phase selection
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