Schweitzer Engineering Laboratories, Inc.
SEL-351R Falcon Data Sheet
7
Advanced Capabilities for Maximum Control
Selective Load Shedding
for Improved System Response
Use retrofit recloser controls to preserve critical loads
while balancing system loading. In the example in
Figure 7, the same feeder serves both Fire Department
and Hospital as residential loads. Incorporating underfre-
quency elements into the SEL-351R Falcon recloser con-
trol provides you the power to segment the feeder to
maximize load preservation while still responding to sys-
tem conditions. You can set the reclosers serving the res-
idential loads with as many as six levels of frequency and
time conditions to coordinate with other controls during
a loss of generation.
Figure 7
Implement Underfrequency Load Shedding With SEL-351R Falcon Recloser Controls to Preserve Critical Loads
Figure 8
Improve Service Reliability for Load With Two SEL-351R Falcon Recloser Controls Communicating Over Fiber
Dual Source for
Premium Reliability
Either Recloser 1 or Recloser 2 can serve the load in
Figure 8. The respective SEL-351R Falcon detects the
state of source- and load-side voltages. The controls
communicate via fiber-optic cable to determine whether
the load should be transferred quickly to the other source
in the event of an outage. M
IRRORED
B
ITS
communications technology and SEL-2815 Fiber-Optic
Transceivers accomplish this communication reliably
and economically.
Automatic Network
Reconfiguration for
Distribution Flexibility
Systems using automatic network reconfiguration, such
as the one in Figure 9, improve service factors by
removing permanently faulted segments without
interrupting service from nonfaulted segments. Use the
SEL-351R Falcon in a variety of possible systems, either
with or without communications between devices. You
can set analog logic and counters to detect loss of voltage
1
Fire Department
and Hospital
Substation
Residential
Residential
I1
Z 0 1
I2
Z02
I3
Z03
IN
Z04
12 V
Z 1 7
RET
Z18
BAT+
Z 1 9
BAT-
Z20
BAT 3A
F01
Z 2 1
N/C
Z25
GND
Z26
H
Z22
N
Z23
Z24
V1
Z05
V2
Z06
V3
Z07
N
Z08
VS
Z09
NS
Z10
F
Z 1 1
E
Z 1 2
C
Z 1 3
B/D
Z14
A
Z 1 5
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECT
CANCEL
LAMP
TEST
EXIT
METER
EVENTS
STATUS
OTHER
SET
CNTRL
GROUP
TARGET
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(press for 3 sec)
AUX 1
AUX 2
WAKE UP
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
C
B
A
LOCKOUT
CYCLE
CURVE
FAST
TAG
HOT LINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
G
SEF
RESET
A01
A04
A03
A02
A07
A06
A05
A08
A 1 1
A 1 0
A09
A 1 4
A 1 3
A 1 2
A23
A 1 6
A 1 5
A 1 7
A 1 8
A22
A20
A 1 9
A21
A26
A25
A24
A28
A27
IRIG-B
SERIAL PORT 1
1
2
3
4
5
N/C
7
8
SERIAL PORT 2
SERIAL PORT 3
OUT102
OUT101
OUT104
OUT103
OUT107
N/C
N/C
IN101
ALARM
IN103
IN102
N/C
N/C
IN104
+
_
RECLOSER CONTROL
I1
Z 0 1
I2
Z02
I3
Z03
IN
Z04
12 V
Z 1 7
RET
Z18
BAT+
Z 1 9
BAT-
Z20
BAT 3A
F01
Z 2 1
N/C
Z25
GND
Z26
H
Z22
N
Z23
Z24
V1
Z05
V2
Z06
V3
Z07
N
Z08
VS
Z09
NS
Z10
F
Z 1 1
E
Z 1 2
C
Z 1 3
B/D
Z14
A
Z 1 5
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECT
CANCEL
LAMP
TEST
EXIT
METER
EVENTS
STATUS
OTHER
SET
CNTRL
GROUP
TARGET
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(press for 3 sec)
AUX 1
AUX 2
WAKE UP
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
C
B
A
LOCKOUT
CYCLE
CURVE
FAST
TAG
HOT LINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
G
SEF
RESET
A01
A04
A03
A02
A07
A06
A05
A08
A 1 1
A 1 0
A09
A 1 4
A 1 3
A 1 2
A23
A 1 6
A 1 5
A 1 7
A 1 8
A22
A20
A 1 9
A21
A26
A25
A24
A28
A27
IRIG-B
SERIAL PORT 1
1
2
3
4
5
N/C
7
8
SERIAL PORT 2
SERIAL PORT 3
OUT102
OUT101
OUT104
OUT103
OUT107
N/C
N/C
IN101
ALARM
IN103
IN102
N/C
N/C
IN104
+
_
RECLOSER CONTROL
1
1
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12 V
Z17
RET
Z18
BAT+
Z19
BAT-
Z20
BAT 3A
F01
Z21
N/C
Z25
GND
Z26
H
Z22
N
Z23
Z24
V1
Z05
V2
Z06
V3
Z07
N
Z08
VS
Z09
NS
Z10
F
Z
1 1
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
19
6-
1215
ENABLED
CO
NTR
OL
TRIP
CO
NTR
OL ST
ATE
SELE
CT
CANCEL
LAMP
TE
ST
EXIT
METER
EVENT
S
STA
TUS
OT
HER
SET
CNTRL
GROUP
TA
RG
ET
RE
SET
GR
OUND
RE
CL
OSE
ENABLED
ENABLED
ENABLED
REMO
TE
SETTING
S
AL
TERNA
TE
LO
CK
(press
for
3 se
c)
AU
X 1
AU
X 2
WA
KE
U
P
CL
OSED
RE
CL
OSER
OPEN
RE
CL
OSER
TRIP
CL
OSE
C
B
A
LO
CKO
UT
CY
CLE
CU
RV
E
FA
ST
TA
G
HO
T LINE
PR
OBLEM
BATTER
Y
SUPPL
Y
AC
CURRENT
HIGH
81
G
SEF
RE
SET
A01
A04
A03
A02
A07
A06
A05
A08
A
1 1
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-B
SERIAL PORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT 2
SERIAL
PORT 3
OUT102
OUT101
OUT104
OUT103
OUT107
N/C
N/C
IN101
ALARM
IN103
IN102
N/C
N/C
IN104
+
_
RE
CL
OSER C
ONTR
OL
1
3
2
3
1
1
Source
Source
Fiber-Optic Cable
Load
SEL-2815
TX
RX
SEL-351R
Falcon
SEL-351R
Falcon
SEL-2815
TX
RX