Sel 411L - Page 937

P.16.9
Date Code 20151029 Protection Manual SEL-411L Relay
Relay Word Bits
Alphabetic
87FLSOK Relay synchronization good enough for fault location purpose 94
87HBA Harmonic blocking asserted in Phase A (permanently asserted if harmonic blocking disabled) 122
87HBB Harmonic blocking asserted in Phase B (permanently asserted if harmonic blocking disabled) 122
87HBC Harmonic blocking asserted in Phase C (permanently asserted if harmonic blocking disabled) 122
87HRA Fifth harmonic blocking asserted in Phase A (permanently asserted if harmonic restraint disabled) 122
87HRB Fifth harmonic blocking asserted in Phase B (permanently asserted if harmonic restraint disabled) 122
87HRC Fifth harmonic blocking asserted in Phase C (permanently asserted if harmonic restraint disabled) 122
87HSB Hot stand-by channel switch (if deasserted the 87PCH used; if asserted, the other channel is used) 99
87IFDL Internal fault detected at the local terminal 404
87L50A 87L phase element, A-phase overcurrent supervision picked up 96
87L50B 87L phase element, B-phase overcurrent supervision picked up 96
87L50C 87L phase element, C-phase overcurrent supervision picked up 96
87L50G 87L zero-sequence element, overcurrent supervision picked up 96
87L50Q 87L negative-sequence element, overcurrent supervision picked up 96
87LA A-phase 87L phase element operated 94
87LB B-phase 87L phase element operated 94
87LC C-phase 87L phase element operated 94
87LG 87L zero-sequence element operated 94
87LGSEC 87L zero-sequence element switched to high security settings 95
87LOOPT Loopback test in progress 120
87LP 87L phase element operated in any phase 115
87LPSEC 87L phase element switched to high security settings 95
87LQ 87L negative-sequence element operated 94
87LQSEC 87L negative-sequence element switched to high security settings 95
87LSP 87L spurious pickup 119
87LST The 87L function is not available (is lost); the relay is not in the master mode and will not trip via
87 DTT because the DTT is disabled, or none of the connected relays is in the master mode.
98
87LU 87L phase element, unrestrained (high-set) overcurrent element operated in any phase (with
in-line transformer, only)
95
87LUA 87L phase element, unrestrained (high-set) overcurrent element operated in the A-phase (with
in-line transformer, only)
95
87LUB 87L phase element, unrestrained (high-set) overcurrent element operated in the B-phase (with
in-line transformer, only)
95
87LUC 87L phase element, unrestrained (high-set) overcurrent element operated in the C-phase (with
in-line transformer, only)
95
87MTR The 87L function is in the master mode; the differential current is calculated. 98
87OCT Open circuited CT detected 118
87OCTA Open circuited CT detected Phase A 117
87OCTB Open circuited CT detected Phase B 117
87OCTC Open circuited CT detected Phase C 118
87OP 87L operated: phase, ground, negative-sequence or from the 87 DTT 116
87QB Harmonic asserted for the 87LQ element (second or fifth harmonic block in any phase) 121
87R01P1–87R08P1 Received bit 1–8 from Remote Peer 1 401
Table 16.1 Alphabetical List of Relay Word Bits (Sheet 9 of 39)
Name Bit Description Row