Schweitzer Engineering Laboratories SEL-751 - Page 884

K.14
SEL-751 Relay Instruction Manual Date Code 20170927
Relay Word Bits
Definitions
DI_B B-phase distortion index
32
DI_C C-phase distortion index
32
DIA_DIS A-phase large difference current disturbance
136
DIB_DIS B-phase large difference current disturbance
136
DIC_DIS C-phase large difference current disturbance
136
DIRGF Forward directional control routed to residual overcurrent elements
127
DIRGR Reverse directional control routed to residual overcurrent elements
127
DIRIE Internal enable for channel in current-polarized directional element
125
DIRNE Internal enable for directional elements for low-impedance grounded, Petersen coil-grounded,
or ungrounded/high-impedance grounded systems
153
DIRNF Forward directional control routed to neutral-ground overcurrent elements
153
DIRNR Reverse directional control routed to neutral-ground overcurrent elements
153
DIRPF Forward directional control routed to phase overcurrent elements
127
DIRPR Reverse directional control routed to phase overcurrent elements
127
DIRQE Internal enable for negative-sequence voltage-polarized directional element
125
DIRQF Forward directional control routed to negative-sequence overcurrent elements
127
DIRQGE Internal enable for negative-sequence voltage-polarized directional element
125
DIRQR Reverse directional control routed to negative-sequence overcurrent elements
127
DIRVE Internal enable for zero-sequence voltage-polarized directional element
125
DL2CLRA A-phase decision logic clear
137
DL2CLRB B-phase decision logic clear
137
DL2CLRC C-phase decision logic clear
137
DNAUX1–DNAUX8 DeviceNet/Modbus AUX1–AUX8 assert bits
34
DNAUX9–DNAUX11 DeviceNet/Modbus AUX9–AUX11 assert bits
35
DSABLSET SEL
OGIC equation: do not allow settings changes from front-panel interface when asserted
26
DST Daylight-saving time
116
DSTP Daylight-saving time pending
116
DUPA A-phase tuning threshold increase
138
DUPB B-phase tuning threshold increase
138
DUPC C-phase tuning threshold increase
138
DVA_DIS A-phase difference voltage disturbance
136
DVB_DIS B-phase difference voltage disturbance
136
DVC_DIS C-phase difference voltage disturbance
136
ENABLED Enable LED
0
ENLRC Asserts when Local/Remote control is enable by EN_LRC :=Y
151
Table K.2 Relay Word Bit Definitions for the SEL-751 Relay (Sheet 9 of 17)
Bit Definition Row