11.26
SEL-421 Relay Instruction Manual Date Code 20171021
Relay Word Bits
Alphabetical List
R1T Positive-sequence resistance within Zone 7 left resistance blinder 25
R32I Reverse current polarized zero-sequence directional element 30
R32P Reverse phase directional declaration 28
R32Q Reverse negative-sequence phase directional declaration 28
R32QG Reverse negative-sequence ground directional element 30
R32V Reverse voltage polarized zero-sequence directional element 30
R3PTE Recloser three-pole trip enable 47
R3PTE1 Recloser three-pole trip enable Circuit Breaker 1 47
R3PTE2 Recloser three-pole trip enable Circuit Breaker 2 48
R6T Positive-sequence resistance within Zone 6 resistance blinder 24
R7T Positive-sequence resistance within Zone 7 resistance blinder 24
RB01–RB08 Remote Bit 1–8 99
RB09–RB16 Remote Bit 9–16 98
RB17–RB24 Remote Bit 17–24 97
RB25–RB32 Remote Bit 25–32 96
RBADA Outage too long on M
IRRORED BITS Communications Channel A 229
RBADB Outage too long on M
IRRORED BITS Communications Channel B 230
RL6 Positive-sequence resistance within Zone 6 left resistance blinder 24
RL7 Positive-sequence resistance within Zone 7 left resistance blinder 24
RMB1A–RMB8A Channel A receive M
IRRORED BITS 1–8 225
RMB1B–RMB8B Channel B receive M
IRRORED BITS 1–8 227
ROKA Normal M
IRRORED BITS Communications Channel A status while not in loopback mode 229
ROKB Normal M
IRRORED BITS Communications Channel B status while not in loopback mode 230
RR6 Positive-sequence resistance within Zone 6 right resistance blinder 24
RR7 Positive-sequence resistance within Zone 7 right resistance blinder 24
RST_79C Reset recloser shot count accumulators (SEL
OGIC control equation) 223
RST_BAT Reset battery monitoring (SEL
OGIC control equation) 223
RST_BK1 Reset Circuit Breaker 1 monitor 222
RST_BK2 Reset Circuit Breaker 2 monitor 222
RST_DEM Reset demand metering 222
RST_ENE Reset energy metering data 222
RST_HAL Reset hardware alarm (SEL
OGIC control equation) 223
RST_PDM Reset peak demand metering 222
RSTDNPE Reset DNP fault summary data (SELOGIC control equation) 223
RSTFLOC Reset fault locator (SEL
OGIC control equation) 223
RSTMMB1 Reset max/min Circuit Breaker 1 (SEL
OGIC control equation) 222
RSTMMB2 Reset max/min Circuit Breaker 2 (SEL
OGIC control equation) 222
RSTMML Reset max/min line (SEL
OGIC control equation) 222
RSTTRGT Target reset (SEL
OGIC control equation) 223
RT1 Circuit Breaker 1 retrip 67
RT2 Circuit Breaker 2 retrip 73
Table 11.1 Alphabetic List of Relay Word Bits (Sheet 26 of 34)
Name Description Row
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