Sel SEL-451-5 - Page 3

Schweitzer Engineering Laboratories, Inc. SEL-451 Data Sheet
3
Figure 1 Functional Diagram
ANSI NUMBERS/ACRONYMS AND FUNCTIONS
25
27
50
50BF
51
52PB
59
67
79
81 (O, U)
ADDITIONAL FUNCTIONS
16 SEC
50G
85 RIO
SEL M
IRRORED BITS Communications
BRM
DFR
HBL
HIZ
HMI
LDE
LGC
Expanded SEL
OGIC Control Equations
LOC
MET
PMU
SBM
SER
1
Copper or Fiber-Optic * Optional Feature
TiDL
Undervoltage
1
Bus
3
Line
Bus
3
3
1
SEL-451
1
IRIG-B
25 27 50 51
50BF
52PB
59
7967
85
RIO
BRM DFR HBLHIZ
HMI
LGC
LOC MET
PMU
SBMSER
4
EIA-232
2
Ethernet*
1
16
S
E
C
81
O
U
SIP
THM
SIP
THM
Software-Invertible Polarities
IEC 60255-Compliant Thermal Model
32 (O, U)
Synchronism Check
Over- and Underpower
Overcurrent
Dual Breaker Failure Overcurrent
Time-Overcurrent
Trip/Close Pushbuttons*
Overvoltage
Directional Overcurrent
Autoreclosing
Over- and Underfrequency
32
O
U
Access Security (Serial, Ethernet)
Best Choice Ground
Breaker Wear Monitor
Event Reports
Harmonic Blocking
High-Impedance Fault Detection Arc Sense™ Technology (AST)*
Operator Interface
Load Encroachment
Fault Locator
High-Accuracy Metering
Synchrophasors
Station Battery Monitor
Sequential Events Recorder
Time-Domain Link Remote Data Acquisition