Sel 411L Instruction Manual page 978

P.16.50 Relay Word Bits
Row List
Table 16.2 Row List of Relay Word Bits (Sheet 12 of 35)
Row Name
95 87LUA, 87LUB, 87LUC
95 87LU
95 87DD
96 87L50A, 87L50B, 87L50C
96 87L50Q
96 87L50G
96 87EFDL
96 87EFDR
96 87EFD
97 87DDL
97 87DDR
97 87CCC
97 87CCB
97 87CCD
97 87CCU
97 87CTWL
97 87CTXL
98 87MTR
98 87SLV
98 87LST
98 87CH1OK, 87CH2OK,
87CH3OK
98 87SYNH
98 87SYNL
99 87HSB
99 87CH1T, 87CH2T,
87CH3T
99 87CH1DT, 87CH2DT,
87CH3DT
99 87TEST
Local Bits
100 LB01–LB08
101 LB09–LB16
102 LB17–LB24
103 LB25–LB32
SEL-411L Relay
Bit Description
87L phase element, unrestrained (high-set) overcurrent element operated in the A-phase,
B-phase, C-phase (with in-line transformer, only)
87L phase element, unrestrained (high-set) overcurrent element operated in any phase
(with in-line transformer, only)
Disturbance detected (local and remote)
87L phase element, A-phase, B-phase, C-phase overcurrent supervision picked up
87L negative-sequence element, overcurrent supervision picked up
87L zero-sequence element, overcurrent supervision picked up
External fault detected at the local terminal
External fault detected by one of the remote terminals
External fault detected in a vicinity of the protected line
Disturbance detected in local 87L currents or LINEV voltages
Disturbance detected in remote currents
Charging current compensation applied to local terminal currents using the local voltage
(87CCC must = 87CCB + 1)
Best possible charging current compensation (87CCB must = 87CCD + 1)
Charging current compensation degraded (87CCD must = 87CCU + 1)
Charging current compensation (87CCU, CCD, CCB and CCC must all be in the same
LongWord)
Terminal W included in 87L element
Terminal X included in 87L element
The 87L function is in the master mode; the differential current is calculated.
The 87L function is in the outstation mode; the differential current is not calculated, but
the 87L function is operational owing to the 87 DTT.
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.
Communication on Channel 1–3 is OK
The 87L system synchronized with high precision
Synchronization of the 87L system potentially degraded
Hot stand-by channel switch (if deasserted the 87PCH used; if asserted, the other channel
is used)
Maximum channel delay alarm for Channel 1–3
Step change in the round trip alarm for Channel 1–3
87L function in a test mode
Local Bits 1–8
Local Bits 9–16
Local Bits 17–24
Local Bits 25–32
Protection Manual Date Code 20151029