Date Code 20100129 Instruction Manual SEL-751A Relay
Index
R.Instruct ion Manual
Page numbers appearing in bold mark the location of the topic’s primary discussion.
Symbols
*, Largest Current .9.9
>, Trigger Row
.9.9
A
Access Levels
communications ports
.7.15
front panel
.8.3
ACSELERATOR ARCHITECT .F.11–.F.12
Alarm
Level 2 access
.2.13
Arc-Flash Protection
Arc-Flash Detection (AFD) .2.29
arc-flash overcurrent elements
.4.95
time-overlight elements
.4.96
ASCII Commands
See Commands
ASCII Protocol
See SEL ASCII Protocol
Automatic Messages
events
.9.1, .9.3
front panel
.8.3
B
Breaker Failure Logic .4.94
Breaker Wear Monitor
.5.15
C
CEVENT Command .9.2
CHISTORY Command
.9.2
Circuit Breaker Auxiliary Contact
contact input
.4.52
Commands
AFT
.7.18
BRE
.7.21
CEV
.7.22
DATE
.1.18
HISTORY
.9.6
IRIG
.7.6
TRIGGER
.9.3
Commissioning Tests
connection test
.10.5
required equipment
.10.2
Communications
ASCII commands ??–.7.42
automatic messages
.7.14
communications ports
.7.1
connector pinout
.7.8
control characters
.7.14
DeviceNet protocol
.7.12
DNP3 Protocol
??–.D.27
EIA-232 ports
.7.1
EIA-485 ports
.7.1
establishing communications
procedure
.1.16, .7.2
exception responses
.E.3
factory default settings
.1.17, .7.2
fiber-optic port
.7.1
front panel
.4.108
hardware flow control
.7.2
port power, rear
.7.8
rear panel
.4.110
SEL ASCII protocol
.7.13, .C.1
SEL protocols
.7.11
set relay
.6.4
Synchrophasors (C37.118 protocol)
.H.1–.H.12
Communications Cables and
Connections
DeviceNet
.G.1
EIA-232
.1.16, .7.9
EIA-485
.7.8
PC-to-relay cable pinout
.7.9
Communications Ports
See Communication
Configurable Label Kit
.8.13
Connections
rear panel
.2.14
Contact Outputs
control equations
.4.91
de-energized position
.2.20
factory defaults
.4.91
fail-safe
operation
.2.20
settings
.4.91
nonfail-safe operation
.2.20
output
.4.88
Contactor/Circuit Breaker Auxiliary
Contact
control equation 52A
.4.52
Core-Balance CT
application example
.4.8
placement
.1.15, .2.23
CSUMMARY Command
.9.2
CT Ratio
setting example
.4.3
Current Imbalance
functional test .10.6
meter
.5.3
percent imbalance equations
.5.3
Currents
See also Core-Balance CT; Meter
average current
.5.3
connections
ground/neutral
.1.15, .2.23
phase
.1.15, .2.23
D
DNP3 Protocol
analog inputs
.D.27
binary inputs
.D.27
binary outputs
.D.27
data map
.D.25
device profile
.D.20
DNP Map Settings
.4.124
DNP3 LAN/WAN
.D.5
DNP3 levels
.D.1
DNP3 serial
.D.3
DNP3 Settings
.D.11
event data
.D.8
object list
.D.21
Debounce
ac mode .4.105
dc mode
.4.105
Direct Trip
contact input
.4.52
Display
front panel .8.2
HMI (SEL-5030)
.3.13
LCD
.4.112
E
Event .9.2
data capture time
.4.124
ER control equation
.9.2
length
.4.124
nonvolatile
.9.1
TR initiate
.9.2
trigger
.9.3
Event History
HIS command
.7.29, .9.6
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