Date Code 20100129
Instruction Manual
SEL-751A Relay
Index
R.Instruction Manual
Page numbers appearing in bold mark the location of the topic’s primary discussion.
Symbols
*, Largest Current
>, Trigger Row
A
Access Levels
communications ports
front panel
AC
SEL
ERATOR
A
RCHITECT
Alarm
Level 2 access
Arc-Flash Protection
Arc-Flash Detection (AFD)
arc-flash overcurrent elements
time-overlight elements
ASCII Commands
ASCII Protocol
Automatic Messages
events
,
front panel
B
Breaker Failure Logic
Breaker Wear Monitor
C
CEVENT Command
CHISTORY Command
Circuit Breaker Auxiliary Contact
contact input
Commands
AFT
BRE
CEV
DATE
HISTORY
IRIG
TRIGGER
Commissioning Tests
connection test
required equipment
Communications
ASCII commands
??–
automatic messages
communications ports
connector pinout
control characters
DeviceNet protocol
DNP3 Protocol
??–
EIA-232 ports
EIA-485 ports
establishing communications
procedure
exception responses
factory default settings
,
fiber-optic port
front panel
hardware flow control
port power, rear
rear panel
SEL ASCII protocol
,
SEL protocols
set relay
Synchrophasors (C37.118 protocol)
Communications Cables and
Connections
DeviceNet
EIA-232
,
EIA-485
PC-to-relay cable pinout
Communications Ports
Configurable Label Kit
Connections
rear panel
Contact Outputs
control equations
de-energized position
factory defaults
fail-safe
operation
settings
nonfail-safe operation
output
Contactor/Circuit Breaker Auxiliary
Contact
control equation 52A
Core-Balance CT
application example
placement
CSUMMARY Command
CT Ratio
setting example
Current Imbalance
functional test
meter
percent imbalance equations
Currents
See also Core-Balance CT; Meter
average current
connections
ground/neutral
phase
D
DNP3 Protocol
analog inputs
binary inputs
binary outputs
data map
device profile
DNP Map Settings
DNP3 LAN/WAN
DNP3 levels
DNP3 serial
DNP3 Settings
event data
object list
Debounce
ac mode
dc mode
Direct Trip
contact input
Display
front panel
HMI (SEL-5030)
LCD
E
Event
data capture time
ER control equation
length
nonvolatile
TR initiate
trigger
Event History
HIS command
Summary of Contents for 751A
Page 1: ...20100129 SEL 751A Feeder Protection Relay Instruction Manual PM751A 01 NB...
Page 6: ...This page intentionally left blank...
Page 12: ...This page intentionally left blank...
Page 18: ...This page intentionally left blank...
Page 26: ...This page intentionally left blank...
Page 92: ...This page intentionally left blank...
Page 218: ...This page intentionally left blank...
Page 250: ...This page intentionally left blank...
Page 376: ...This page intentionally left blank...
Page 392: ...This page intentionally left blank...
Page 408: ...This page intentionally left blank...
Page 418: ...This page intentionally left blank...
Page 434: ...This page intentionally left blank...
Page 462: ...This page intentionally left blank...
Page 544: ...This page intentionally left blank...
Page 580: ...This page intentionally left blank...
Page 584: ...This page intentionally left blank...
Page 632: ...This page intentionally left blank...
Page 636: ...This page intentionally left blank...
Page 640: ...This page intentionally left blank...