4-30 Control Logic Date Code 20080110
SEL-387E Instruction Manual
Row Bit Definition
11 50A33 Winding 3 A-phase instantaneous O/C Level 3 element picked up
50B33 Winding 3 B-phase instantaneous O/C Level 3 element picked up
50C33 Winding 3 C-phase instantaneous O/C Level 3 element picked up
50P33 50A33 + 50B33 + 50C33
50A34 Winding 3 A-phase instantaneous O/C Level 4 element picked up
50B34 Winding 3 B-phase instantaneous O/C Level 4 element picked up
50C34 Winding 3 C-phase instantaneous O/C Level 4 element picked up
50P34 50A34 + 50B34 + 50C34
12 50N31 Winding 3 residual definite-time O/C Level 1 element picked up
50N31T Winding 3 residual definite-time O/C level 1 element timed out
50N32 Winding 3 residual instantaneous O/C Level 2 element picked up
51N3 Winding 3 residual inverse-time O/C element picked up
51N3T Winding 3 residual inverse-time O/C element timed out
51N3R Winding 3 residual inverse-time O/C 51N3 element is reset
NDEM3 Winding 3 residual demand current threshold exceeded
OC3 Breaker 3 OPEN command execution
13 50Q31 Winding 3 neg.-seq. definite-time O/C Level 1 element picked up
50Q31T Winding 3 neg.-seq. definite-time O/C Level 1 element timed out
50Q32 Winding 3 neg.-seq. instantaneous O/C Level 2 element picked up
51Q3 Winding 3 neg.-seq. inverse-time O/C element picked up
51Q3T Winding 3 neg.-seq. inverse-time O/C element timed out
51Q3R Winding 3 neg.-seq. inverse-time O/C 51Q3 element is reset
QDEM3 Winding 3 neg.-seq. demand current threshold exceeded
CC3 Breaker 3 CLOSE command execution
14 * Reserved for future use
27V1 Positive-sequence undervoltage picked up
27PP2 Level 2 phase-phase undervoltage picked up
27PP1 Level 1 phase-phase undervoltage picked up
27P2 Level 2 phase undervoltage picked up
27P1 Level 1 phase undervoltage picked up
* Reserved for future use
CTS Current transformer saturation
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