Sel SEL-351R Falcon User manual

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
SEL-351R Falcon™ Recloser Control
Take Control of Your Recloser
Major Features and Benefits
The SEL-351R Falcon Recloser Control provides microprocessor-based features in a slim-profile housing for
long, reliable service on your distribution system.
➤Modernize existing recloser installations to provide cost saving protection, automation, and
control features. Single-person-lift size and standard control cable interconnection simplifies
installation. Available in Lift-To-Open and Swing-Open enclosure options.
➤Use automatic network reconfiguration for improved reliability. Patented MIRRORED BITS®communi-
cations speeds protection and improves security.
➤Customize controls by using enhanced SELOGIC®control equations for improved system operation.
Configurable front-panel control labels simplify custom functions.
➤Improve feeder loading by using built-in, high-accuracy metering functions. Use watt and var measure-
ments to optimize feeder operation. Measure three-phase values with either three potential transform-
ers or use “phantom” values derived from a single-phase voltage.
➤Increase efficiency of service restoration with accurate fault location when connected with three-phase voltages.
➤Reduce engineering costs with ACSELERATOR QuickSet®SEL-5030 Software for relay settings and logic pro-
gramming. The built-in HMI provides phasor diagrams that help support commissioning and troubleshooting.
➤Power with 120 Vac or 230 Vac (or 125 Vdc or 250 Vdc).

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
2
Functional Overview
Figure 1 Functional Diagram
Functional Replacement for Traditional Recloser Control
EZ Settings for Basic
Recloser Functions
For traditional recloser functions, the SEL-351R Falcon
is easy to set. Only settings such as minimum trip pickup,
curve type, and reclose interval are necessary. These set-
tings are made at an EZ (easy) access level. SELOGIC
control equations cannot be changed at this access level.
Control logic is preconfigured at the factory. To
customize the logic for advanced functions, the SELOGIC
control equations must be reprogrammed.
Reclosing
The SEL-351R Falcon can reclose as many as four (4)
times. This allows as many as five (5) operations of any
combination of fast and delay curve overcurrent
elements. Each reclose interval can be set for as many as
999,999 cycles (more than 4.5 hours), if necessary.
After a reclose interval has timed out, the control waits a
user-set time (close power wait time) for the presence of
adequate Vac power before proceeding with the auto
reclose. The recloser needs either primary or secondary
voltage to provide the closing power, depending on how
the recloser is equipped. The Vac power into the
SEL-351R Falcon is an indication of the presence of this
primary or secondary voltage. The close power wait time
has the same 999,999-cycle setting range as the reclose
interval.
The reset times are set separately for reset timing for an
auto reclose and reset timing for a manual/remote close
from lockout. Traditionally, the reset time for a
manual/remote close from lockout is set for less than the
reset time for an auto-reclose. The reset times have the
same 999,999-cycle setting range.
Front-panel LEDs track the CONTROL STATE for
auto-reclosing: RESET, CYCLE, or LOCKOUT (see Figure 14
and Table 4).
Sequence coordination logic is enabled to prevent the
SEL-351R Falcon from tripping on its fast curves for
faults beyond a downstream recloser.
Customize reclosing logic by using SELOGIC control
equations. Use programmable counters, latches, logic
functions, and analog compare functions to optimize
control actions.
ANSI NUMBERS/ACRONYMS AND FUNCTIONS
25 Synchronism Check*
27 Undervoltage
50N Neutral Overcurrent
50 (P, G, Q) Overcurrent (Phase, Ground, Neg. Seq.)
51N Neutral Time-Overcurrent
51 (P, G, Q) Time-Overcurrent (Phase, Ground, Neg. Seq.)
59 Overvoltage
59 (P, G, Q) Overvoltage (Phase, Ground, Neg. Seq.)
67N Directional Neutral Overcurrent*
67 (P, G, Q) Directional Overcurrent (Phase, Ground, Neg. Seq.)*
79 Autoreclosing
81 (O, U) Over-/Underfrequency
85 RIO SEL MIRRORED BITS®Communications
DFR Event Reports
HMI Operator Interface
LGC SELOGIC®Control Equations
MET High-Accuracy Metering
SER Sequential Events Recorder
ADDITIONAL FUNCTIONS
BRM Breaker Wear Monitor
LDP Load Data Profiling*
LOC Fault Locator*
* Optional Feature
51N50N
27 59
79
67N
50P
G
Q51P
G
Q
Line
Bus
4
EIA-232
EIA-485
1
IRIG-B
Residual
S
3
1
27 81O
U
59P
G
Q
25
RECLOSER
*
*
67P
G
Q
85
RIO
DFR HMI LGC LOC
MET SER
BRM

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
3
Figure 2 Connect True Three-Phase and
Synchronism-Check Voltages to the SEL-351R Falcon
Overcurrent Protection
Fast and Delay Curves
Use up to five cumulative fast and delay curve operations
for phase and ground overcurrent protection. For a nomi-
nal recloser CT ratio of 1000:1, these curves can be set as
sensitive as 50 A and 5 A primary for phase and ground
overcurrent protection, respectively.
Any fast or delay curve (phase or ground) can be set with
any of the curves in Table 1. The US and IEC curves
conform to IEEE C37.112-1996 IEEE Standard
Inverse-Time Characteristic Equations for Overcurrent
Relays.
The traditional recloser curve choices listed in Table 1
use the older electronic control designations. The
SEL-351R Falcon also works with the newer
microprocessor-based control designations. For example,
a given traditional recloser curve has the following two
designations:
Traditional recloser curve A and 101 are the same curve.
Use either designation in making curve settings in the
SEL-351R Falcon.
Four (4) user-designed curves (created with a software
package) can be downloaded to the SEL-351R Falcon.
The fast and delay curves (phase or ground) can be set
with the user-designed curves or the curve choices in
Table 1.
Modify fast and delay curves (including US or IEC curve
choices) with the following traditional recloser control
curve modifiers:
➤constant time adder—adds time to curve
➤vertical multiplier (time dial)—shifts whole curve
up or down in time
➤minimum response time—holds off curve tripping
for minimum time
➤high-current trip—instantaneous trip with optional
time delay
➤high-current lockout—high-set lockout threshold
Front-panel target LEDs indicate any overcurrent trip in
general (TRIP LED) and then discriminate a fast-curve
trip (FAST CURVE LED) or a high-current trip (HIGH
CURRENT LED). See Figure 14 and Table 4.
Figure 3 Coordinate Overcurrent Protective Devices
Table 1 Curve Choices in the SEL-351R Falcon
Curve Type Curve Choices
All traditional recloser curves A, B, C, D, E, F, G, H, J, KP,
L, M, N, P, R, T, V, W, Y, Z, 1,
2, 3, 4, 5, 6, 7, 8, 8PLUS, 9,
KG, 11, 13, 14, 15, 16, 17, 18
US curves moderately inverse, inverse,
very inverse, extremely
inverse, short-time inverse
IEC curves class A (standard inverse),
class B (very inverse), class C
(extremely inverse), long-time
inverse, short-time inverse
Programmable curves
(user designed) Four (4) programmable curves
Optional 3-Phase Voltage
(connect to voltage
channels V1, V2, and V3)
• Fault Locating
• Sensitive, Yet Secure,
Fault Detection
• Complete Metering
Connect to extra
voltage channel VS
for synchronism check
and line voltage check
(channel VSconnects
to A-phase in this example)
Control Cable
• Trip and Close
• Breaker Status
• IA, IB, IC, IN
• 24 Vdc
120 Vac Power
120 Vac
Close Power
(if recloser
is equipped)
LoadSource
C
B
A
R
E
C
L
O
S
E
R
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECTCANCEL
LAMP
TEST EXIT
METER EVENTS STATUS OTHER SET CNTRL GROUP
TARGET
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(pressfor 3 sec)
AUX 1
AUX 2
WAKE UP
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
Older electronic control designation: A
Newer microprocessor-based control designation: 101
52
t
I
Fast
Curves
Delay
Curves
Retrofit older existing
reclosers with SEL-351R Falcon
Recloser
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECTCANCEL
LAMP
TEST EXIT
METER EVENTS STATUS OTHER SET CNTRL GROUP
TARG E T
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(press for 3 sec)
AUX 1
AUX 2
WAKE U P
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
SEL-351S

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
4
The SEL-351R Falcon has two reset characteristic
choices for each time-overcurrent element. One choice
resets the elements if current drops below pickup for at
least one cycle. The other choice (for US or IEC curves
only) emulates electromechanical induction disc
elements, where the reset time depends on the time-dial
setting, the percentage of disc travel, and the amount of
current.
Sensitive Earth
Fault (SEF) Element
A sensitive earth fault (SEF) element with time delay (as
long as 16,000 cycles) can be set as sensitive as 5 A pri-
mary (assuming nominal recloser CT ratio of 1000:1).
Current channel IN with a 0.05 A secondary nominal rat-
ing provides this sensitivity (see Figure 15).
The front-panel SEF LED indicates any SEF element trip
(see Figure 14 and Table 4).
Custom Overcurrent Protection
Customize the overcurrent protection by reprogramming
the corresponding SELOGIC control equations.
Metering and Monitoring
Complete Metering Capabilities
The SEL-351R Falcon provides extensive and accurate
metering capabilities. See Specifications on page 17 for
metering and power measurement accuracies.
Metered quantities include phase voltages and currents
(including demand currents); sequence voltages and
currents; power (including demand), frequency, and
energy; and maximum/minimum logging of selected
quantities (see Table 2). The recloser control reports all
metered quantities in primary quantities (current in
A primary and voltage in kV primary).
Recloser Wear Monitor
Reclosers suffer mechanical and electrical wear every
time they operate. The recloser wear monitor measures
unfiltered ac current at the time of trip and the number of
close-to-open operations as a means of monitoring this
wear. Every time the recloser trips, the recloser control
records the magnitude of the raw current in each phase.
This current information is integrated on a per-phase basis.
When the result of this integration exceeds the threshold
the recloser wear curve establishes, the SEL-351R
Falcon asserts a logic point for the affected phase. This
logic point can be routed for alarming or to modify
reclosing (e.g., shorten the number of reclosures). This
method of monitoring recloser wear is based solidly on
methods of breaker rating from breaker manufacturers.
Figure 4 shows three setpoints necessary to emulate a
breaker wear curve. Program the setpoints in Figure 4 to
customize the recloser wear curve.
The SEL-351R Falcon sets setpoints automatically
according to recommendations for reclosers in ANSI
C37.61-1973. Only the recloser type (oil or vacuum) and
the interrupt rating are necessary settings.
Ta b l e 2 M e t e r i n g a
aIf true three-phase voltage is not connected, the voltage (VA,B,C) uses phantom voltages derived from a single-phase voltage to calculate
MW/MVAR, MWh/MVARh, and power factor metering values.
Quantities Description
Currents IA,B,C,N, IGInput currents, residual ground current (IG= 3I0, IA+ IB+ IC).
Voltages VA,B,C, VSWye-connected voltage inputs, synchronism-check voltage input.
Power MWA,B,C,3P, MVARA,B,C,3P Single- and three-phase megawatts and megavars.
Energy MWhA,B,C,3P, MVARhA,B,C,3P Single- and three-phase megawatt-hours and megavar-hours.
Power Factor PFA,B,C,3P Single- and three-phase power factor; leading or lagging.
Sequence I1, 3I2, 3I0Positive-, negative-, and zero-sequence currents.
Frequency, FREQ (Hz) Instantaneous power system frequency (monitored on channel VA).

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
5
Figure 4 Recloser Contact Wear Curve and Settings
Fault Locator
The SEL-351R Falcon provides an accurate estimate of
fault location even during periods of substantial load
flow. The fault locator uses fault type, replica line imped-
ance settings, and fault conditions to develop an estimate
of fault location without communications channels, spe-
cial instrument transformers, or prefault information.
This feature contributes to efficient dispatch of line
crews and fast restoration of service. The fault locator
requires three-phase voltage inputs.
Automation
Flexible Control Logic
and Integration
The SEL-351R Falcon has three independently operated
serial ports: two EIA-232 ports and one optional
EIA-485 port on the side. The recloser control does not
require special communications software. Use any
system that emulates a standard terminal system.
Establish communication by connecting computers,
modems, protocol converters, printers, the SEL-3530
RTAC, an SEL-2032, SEL-2030 or SEL-2020
Communications Processor, SCADA serial port, and/or
RTU for local or remote communication.
Apply an SEL-2032 as the hub of a star network, with a
point-to-point fiber or copper connection between the
hub and the SEL-351R Falcon, as in Figure 5. The
SEL-2032 supports external communications links,
including the public switched telephone network for
engineering access to dial-out alerts and private line
connections of the SCADA system.
Figure 5 Example Communication System
SEL manufactures a variety of standard cables for
connecting this and other IEDs to a variety of external
devices. Consult your SEL representative for more
information on cable availability.
(COSP1, KASP1)
(COSP3, KASP3)
(COSP2, KASP2)
kA Interrupted (kA Axis)
Close-to-Open (C/O Axis)
ASCII Reports
Plus Interleaved
Binary Data
Dial-Up ASCII Link DNP SCADA Link
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROLSTATE
SELECTCANCEL
LAMP
TEST EXIT
METER EVENTS STATUS OTHER SET CNTRL GROUP
TARGE T
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(pressfor 3 sec)
AUX 1
AUX 2
WAKE UP
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECTCANCEL
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
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROLSTATE
SELECTCANCEL
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
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
G SEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECTCANCEL
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 U P
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
G SEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
6
ACSELERATOR QuickSet SEL-5030
and ACSELERATOR QuickSet
Designer SEL-5031
Use ACSELERATOR QuickSet SEL-5030 to develop set-
tings off-line. The system automatically checks interre-
lated settings and highlights out-of-range settings.
Transfer the settings created off-line to the SEL-351R
Falcon using a PC communications link. The software
converts event reports to oscillograms with time-coordi-
nated element assertion and phasor/sequence element
diagrams. The ACSELERATOR QuickSet interface sup-
ports Microsoft®Windows®operating systems. View
real-time phasors via ACSELERATOR QuickSet.
ACSELERATOR QuickSet Designer®SEL-5031 Software
additionally allows users to create personalized
Application Designs. Use Application Designs within
ACSELERATOR QuickSet Designer to quickly implement
advanced schemes such as automatic network
reconfiguration. Application Designs hide settings you
do not want changed (e.g., SELOGIC control equations),
while making visible the minimum necessary settings
(e.g., timer and pickup settings) to implement the
scheme. You can alias and manipulate mathematically all
settings for simple end-user interfacing. You can also
define custom notes and settings ranges. Application
Designs enhance security by allowing access to only a
specified group of settings. Create Application Designs
that include the most commonly used relay features and
settings for your system (see Figure 6) and watch
commissioning times drop drastically.
Figure 6 Example Application Design
Table 3 Open Communications Protocols
Typ e Description
Simple ASCII Plain language commands for human- and simple-machine communications. Use for metering, setting, self-test
status, event reporting, and other functions.
Compressed ASCII Comma-delimited ASCII data reports. Allows external devices to obtain relay data in an appropriate format for
direct import into spreadsheets and database programs. Data are checksum protected.
Extended Fast Meter
and Fast Operate Binary protocol for machine-to-machine communications. Quickly updates SEL communications processors, RTUs, and other substation devices with metering information, relay element, I/O status, time-tags, open and
close commands, and summary event reports. Data are checksum protected.
Binary and ASCII protocols operate simultaneously over the same communications lines so control operator
metering information is not lost while a technician is transferring an event report.
Distributed Port
Switch Protocol Enables multiple SEL devices to share a common communications bus (two-character address setting range is 01–99). Use this protocol for low-cost, port-switching applications.
DNP3 Level 2
Outstation Distributed Network Protocol with point remapping. Includes access to metering data, protection elements, contact I/O, targets, SER, relay summary event reports, and setting groups.

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. MIRRORED BITS
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
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECTCANCEL
LAMP
TEST EXIT
METER EVENTS STATUS OTHER SET CNTRL GROUP
TARG E T
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(press for 3 sec)
AUX 1
AUX 2
WAKE U P
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
G SEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECTCANCEL
LAMP
TEST EXIT
METER EVENTS STATUS OTHER SET CNTRL GROUP
TARG E T
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(press for 3 sec)
AUX 1
AUX 2
WAKE U P
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
G SEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
1
1
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROL STATE
SELECTCANCEL
LAMP
TEST EXIT
METER EVENTS STATUS OTHER SET CNTRL GROUP
TARG E T
RESET
GROUND
RECLOSE
ENABLED
ENABLED
ENABLED
REMOTE
SETTINGS
ALTERNATE
LOCK
(press for 3 sec)
AUX 1
AUX 2
WAKE U P
CLOSED
RECLOSER
OPEN
RECLOSER
TRIP
CLOSE
C
BA
LOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104
OUT103 OUT107N/CN/C IN101
ALARM IN103
IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
13
2
31
1
Source Source
Fiber-Optic Cable
Load
SEL-2815 TX
RX
SEL-351R
Falcon
SEL-351R
Falcon
SEL-2815
TX
RX

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
8
conditions indicating upstream recloser openings.
Change setting groups in intermediate recloser controls
to reverse direction when the tie recloser is closed. Use
either reclose shot counting or time coordination to
determine a faulted segment.
Optional voltage elements provide three-phase
measurements from one side of the recloser and a single-
phase measurement from the other side.
Figure 9 Automatic Network Reconfiguration Showing Improved Service
Added Capabilities
MIRRORED BITS Relay-to-Relay
Communications
The SEL-patented MIRRORED BITS communications
technology provides bidirectional relay-to-relay digital
communication. MIRRORED BITS can operate inde-
pendently on as many as two EIA-232 serial ports on a
single SEL-351R Falcon. With MIRRORED BITS operat-
ing on two serial ports, there is communication upstream
and downstream from the SEL-351R Falcon site.
This bidirectional digital communication creates eight
additional virtual outputs (transmitted MIRRORED BITS)
and eight additional virtual inputs (received MIRRORED
31
Source
Source
Fiber-Optic Cable
Communication
Fiber-Optic Cable
Communication
Fiber-Optic Cable
Communication
Fiber-Optic Cable
Communication
13
Intermediate
Recloser
Intermediate
Recloser
Source
Recloser
Source
Recloser
31 13
Tie Recloser
(Normally
Open)
1
3
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROLSTATE
SELECTCANCEL
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
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROLSTATE
SELECTCANCEL
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
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROLSTATE
SELECTCANCEL
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
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROLSTATE
SELECTCANCEL
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
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL
I1
Z01
I2
Z02
I3
Z03
IN
Z04
12V
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
Z11
E
Z12
C
Z13
B/D
Z14
A
Z15
RET
Z16
196-1215
ENABLED
CONTROL
TRIP
CONTROLSTATE
SELECTCANCEL
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
CBALOCKOUTCYCLE
CURVE
FAST
TAG
HOTLINE
PROBLEM
BATTERY
SUPPLY
AC
CURRENT
HIGH
81
GSEFRESET
A01
A04
A03
A02
A07
A06
A05
A08
A11
A10
A09
A14
A13
A12
A23
A16
A15
A17
A18
A22
A20
A19
A21
A26
A25
A24
A28
A27
IRIG-BSERIALPORT 1
1
2
3
4
5
N/C
7
8
SERIAL
PORT2
SERIAL
PORT3
OUT102OUT101 OUT104OUT103 OUT107N/CN/C IN101ALARM IN103IN102 N/C N/CIN104
+
_
RECLOSER CONTROL

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
9
BITS) for each serial port operating in the MIRRORED
BITS mode (see Figure 10). Use these MIRRORED BITS to
transmit/receive information between an upstream relay
and a downstream recloser control to enhance
coordination and achieve faster tripping for downstream
faults. MIRRORED BITS technology also helps reduce
total scheme operating time by eliminating the need to
assert output contacts to transmit information.
Figure 10 MIRRORED BITS Transmit and Receive Bits
Advanced SELOGIC
Control Equations
Advanced SELOGIC control equations allow you to
assign relay outputs to any logical combination of Relay
Word elements or inputs.
Program SELOGIC control equations by combining relay
elements, inputs, and outputs with SELOGIC control
equation operators. Bits in a table called the “Relay
Word” reflect the state of all logical elements in the
recloser control. These logical elements include all
current (50/51) and directional-level detecting elements,
timer elements, SELOGIC control equation variables,
inputs, outputs, and remote, local, and latched bits.
SELOGIC control equation operators include OR, AND,
invert, parentheses, and rising and falling edges of
element state changes. Analog compare functions (<, >,
=, < >) are also available. These functions add control
flexibility to customize logic based on recloser shot
count or other control values.
The basic building blocks of SELOGIC control equations
are the Relay Word bits. The Relay Word bits are simple
digital quantities having a logical value of either 0 or 1.
The terms “assert” or “asserted” refer to a Relay Word
bit that has a value of 1 or is changing from 0 to 1. The
terms “deassert” or “deasserted” refer to a Relay Word
bit that has a value of 0 or is changing from 1 to 0.
Various elements within the recloser control assert or
deassert Relay Word bits. Use these elements in the fixed
internal logic of the recloser control to make decisions,
to interpret inputs, or to drive outputs. These bits are
available so that you can exercise flexibility in defining
inputs or outputs, in specifying control variables for
internal logic, or in creating special customized logic
through the use of SELOGIC control equations.
In addition to Boolean logic, 16 general purpose
SELOGIC control equation timers eliminate external
timers for custom protection or control schemes. Each
timer has independent time-delay pickup and dropout
settings. Program each timer input with any element
(e.g., time qualify a voltage element) you specify. Assign
the timer output to trip logic, transfer trip
communications, or other control scheme logic.
The SEL-351R Falcon has the same SELOGIC control
equations capability as the established SEL-351R-2.
Hardware Overview
The convenient side-panel construction of the SEL-351R
Falcon provides easy access to all controls and connec-
tions.
Communications ports, contacts, and control cable
connection points are all readily available. Labeling is
shown in Figure 14 (right-hand side).
Figure 11 SEL-351R Falcon Module Side Panel
SEL-351S Relay
Transmit
Receive
Transmit
Receive
.
.
.
.
SEL-351R Falcon Recloser Control
0
0
0
1
0
0
.
.
.
.
1
0
0
0
0
0
TMB1
TMB2
TMB8
RMB1
RMB2
RMB8 RMB8
TMB1
TMB2
TMB8
.
.
.
.
.
.
RMB1
RMB2
.
.
i4422b

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
10
Figure 12 SEL-351R Falcon Lift-To-Open Enclosure
With Door Open (wiring not shown)
Recloser Control Connections
Available in Lift-To-Open (Figure 16) and Swing-Open
(Figure 17) enclosure options.
The control cable from the recloser attaches at the
bottom of the SEL-351R Falcon enclosure to a standard
receptacle. The wiring from this receptacle continues
into the control itself, with the currents and control
landing on the side-panel terminals.
The 120 or 230 Vac power parallels voltage channel V1,
as shown in the retrofit of a traditional installation in
Figure 13. If you order the SEL-351R Falcon with
additional voltage channels V2, V3, and VS, connect true
three-phase voltage and synchronism-check voltage to
the side-panel terminals.
An internal battery monitor/charger provides battery
charging/discharging. Through this battery
monitor/charger the SEL-351R Falcon can monitor
battery voltage. The SEL-351R Falcon puts itself to sleep
if voltage falls to a user-set threshold (or if a user-set
timer times out) after an extended outage.
The SEL-351R Falcon can also be powered with
125 Vdc or 250 Vdc.
Figure 13 Connections Inside the SEL-351R Falcon Enclosure
Control Cable
Receptacle
Batteries
NEMA Type 3R
(IP32) Enclosure
Relay
Module
Terminals
Mount
SEL-2401
and/or
SEL-3022
Mount
user-supplied
accessory
panel
SEL-2401 or
SEL-3622 or
SEL-2925
SEL-351R Falcon Recloser Control (not including front panel)
As many as
7 Output
Contacts/1 Alarm
I1, I2, I3, IN
Recloser Status
Trip and Close
SCADA
or
Other
Control
Control
Cable
120 Vac or
230 Vac Power
24 Vdc
Lead-Acid
Battery
EIA-232
EIA-232
EIA-485
As many as
6 Optoisolated
Inputs
V2
V3
VS (synchronism check)
V1 (also monitors frequency)
12 Vdc power
to SEL-2401 or
SEL-3622 (if installed)
Power In
12 Vdc Out
Ordering
Option
Ordering
Option
Close Power
(if recloser
is equipped)
36 Vdc
Power Supply
12 Vdc
Power Supply
Battery
Monitor/
Charger
Control
Power Supply
24 or 36 Vdc Out
+—

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
11
Front-Panel Interface
The control panel on the SEL-351R Falcon is designed to
provide easy-to-use and flexible operation by field per-
sonnel. Figure 14 shows default functions. You can
change most functions by programming to meet system
requirements (see Table 4). Use the optional configurable
labels to customize the targets and control pushbuttons to
best meet operational needs.
rSee noted safety features for CLOSE and TRIP operator controls in Table 4.
Figure 14 SEL-351R Falcon Recloser Control Front-Panel Interface
Display
2 x 16 liquid
crystal display (LCD)
Pushbuttons
Status and Trip
Target LEDs
Operator Controls
i4301b
r
e
w
q

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
12
Table 4 Factory Default Front-Panel Interface Definitions (see Figure 14)
Function Definition
➀PUSHBUTTONS Except for TARGET RESET/LAMP TEST, the pushbuttons have dual functions (primary/secondary).
After you select a primary function (i.e., METER pushbutton), the pushbuttons operate on their
secondary functions (CANCEL, SELECT, left/right arrows, up/down arrows, EXIT) so you can scroll
through information, activate settings/control, etc., on the LCD.
➁CONTROL ENABLEDa
aThese indicated LEDs and the operator control have fixed functions. Programming at a higher logic level can change functions of all other LEDs
and operator controls (with corresponding status LEDs).
SEL-351R Falcon Recloser Control is enabled.
AC SUPPLY Adequate Vac power is present.
BATTERY PROBLEM Indicates battery problems.
HOT LINE TAG No closing or autoreclosing can take place via the control.
TRIP Trip occurred.
FAST CURVE Fast curve overcurrent element trip.
HIGH CURRENT High-set overcurrent element trip.
81 Underfrequency trip.
RESET The control is in the reset state, ready for a reclose cycle.
CYCLE The control is actively in the trip/reclose cycle mode.
LOCKOUT All reclose attempts were unsuccessful.
A, B, CaA-, B-, or C-phase involved in fault.
GGround involved in fault.
SEF Sensitive earth fault overcurrent element trip.
➂GROUND ENABLED Enables/disables ground overcurrent elements.
RECLOSE ENABLED Enables/disables autoreclosing.
REMOTE ENABLED Enables/disables remote control.
ALTERNATE SETTINGS Switches active setting group between main and alternate setting groups.
LOCK (press for 3 seconds) Blocks the function of other operator controls (except WAKE UP and TRIP). Three-second delay to
engage/disengage.
AUX 1 User programmable; e.g., program to Trip Test—test autoreclose logic without applying current.
AUX 2 User programmable; e.g., program to enable/disable fast-curve tripping.
WAKE UP aWakes up the control after it has been put to sleep.
CLOSE/RECLOSER CLOSED Close recloser/recloser closed status.b
bYou can set the CLOSE operator control with a delay, which allows an operator to press CLOSE and then move a safe distance away from the recloser
before closing proceeds.
TRIP/RECLOSER OPEN Trip recloser (go to lockout)/recloser open status.c
cYou can set the TRIP operator control with a delay, which allows an operator to press TRIP and then move a safe distance away from the recloser
before tripping proceeds.

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
13
Guideform Specification
The microprocessor-based recloser control shall provide a
combination of functions including protection, monitoring,
control, fault locating, and automation. Recloser control
self-checking functions shall be included. Specific opera-
tional and functional requirements are as follows.
➤Autoreclosing Control. The recloser control shall
incorporate a four-shot control. It shall include
four independently set open time intervals, an inde-
pendently set reset time from reclose cycle, and an
independently set reset time from lockout.
➤Coordination With Downstream Reclosers. The
recloser control shall include 38 standard recloser
time-overcurrent curves and sequence coordination
logic for secure and dependable operation.
➤Phase Fault Overcurrent Protection. The recloser
control shall incorporate phase and negative-sequence
overcurrent elements for detection of phase faults. For
added security, the recloser control shall provide direc-
tional elements, load- encroachment logic, and
torque-control capability (internal and external).
➤Ground Fault Overcurrent Protection. The
recloser control shall incorporate residual ground
overcurrent elements for detection of ground
faults. For added security, the recloser control shall
provide directional elements and torque-control
capability (internal and external).
➤Phase Under- and Overvoltage Elements. The
recloser control shall incorporate undervoltage and
overvoltage elements for creating protection and
control schemes, including but not limited to volt-
age checks (e.g., hot bus/dead line) for reclosing;
blown transformer high-side fuse-detection logic;
and control schemes for capacitor banks.
➤Sequence Voltage Elements. The recloser control
shall incorporate positive-, negative-, and zero-sequence
voltage elements that can be logically configured for
either under- or overvoltage applications.
➤Under- and Overfrequency Protection. The
recloser control shall incorporate six levels of
under- and overfrequency elements for detection of
power system frequency disturbances. Each setting
level shall use an independently set timer for load-
shedding or generator-tripping schemes.
➤Synchronism Check. The recloser control shall
include two synchronism-check elements with separate
maximum angle settings (e.g., one for autoreclosing
and one for manual closing). The synchronism-check
function shall compensate for close time and constant
phase-angle differences between the two voltage
sources used for synchronism check (phase-angle dif-
ferences are settable in 30-degree increments).
➤IED Communications. The recloser control shall
include the capability for communication of inter-
nal logic values to a remote relay or recloser con-
trol via serial communications. These values shall
be available for use in control logic.
➤Secure Communications. The recloser control shall
include an optional accessory for converting an
EIA-232 serial port to encrypted and authenticated
IEEE 802.11b wireless communication. Software shall
be provided with this accessory to allow a personal
computer (PC) or personal data assistant (PDA) access
to the wireless port.
➤Operator Controls. The recloser control shall
include 10 operator controls on the recloser control
front panel; these functions shall also be accessible
in the recloser control logic. Nine of the operator
controls shall include pushbuttons and LEDs with
programmable functions and indications.
➤Event Reporting and Sequential Events
Recorder (SER). The recloser control shall be capa-
ble of automatically recording disturbance events of
15 or 30 cycles with settable prefault duration and
user-defined triggering. Events shall be stored in non-
volatile memory. The recloser control shall include an
SER that stores the latest 512 entries.
➤Status and Trip Target LEDs. The recloser con-
trol shall include 16 status and trip target LEDs.
➤Recloser Wear Monitor. The recloser control
shall include a recloser wear monitor with
user-definable wear curves, operation counter, and
accumulated interrupted currents by phase.
➤Battery Monitor. The recloser control shall measure
and report the battery voltage level. User-selectable
parameters shall be provided to put the control to sleep
for low battery voltage or for a lengthy outage.
➤Fault Locator. The recloser control shall include a
fault-locating algorithm to provide an accurate estimate
of fault location without communications channels, spe-
cial instrument transformers, or prefault information.
➤Automation. The recloser control shall include
16 local control elements, 16 remote control logic
points, 16 latching logic points, and 16 display mes-
sages in conjunction with a local display panel. The
recloser control shall have the capability to display cus-
tom messages.
➤Recloser Control Logic. The recloser control shall
include programmable-logic functions for a wide range
of user-configurable protection, monitoring, and control
schemes.
➤Communication. The recloser control shall
include two independent EIA-232 serial ports and
one optional EIA-485 serial port for external com-
munication. There shall be an option for DNP3
Level 2 protocol with bitmapping.
➤IRIG-B. The recloser control shall include an interface
port for a demodulated IRIG-B time synchronization
input signal.
➤PC Software. The recloser control shall include com-
patibility with a PC software program for use in pro-
gramming control settings and logic functions, and
retrieving event data. The PC software shall be included,
but it is not necessary to use the recloser control.
➤Power Supply. The recloser control shall accept
120 Vac or 230 Vac (or 125 Vdc or 250 Vdc).
➤Warranty. The relay shall have a minimum
10-year worldwide warranty.

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
14
Wiring Diagram
Figure 15 SEL-351R Falcon Module Inputs, Outputs, and Communications Ports
PORT 3 (SIDE)
PORT 2 (SIDE)
PORT 1 (SIDE)
ISOLATED EIA-485
+
—
+
—
Battery
Monitor/Charger
12 Vdc
Power Supply
I1
Z01
N/C
Z02
Z03
Z04
Z06
Z05
Z07
Z09
Z08
Z10
Z11
Z12
Z13
Z14
Z15
Z16
Z17
Z18
Z19
Z20
Z21
Z22
Z23
Z24
Z25
Z26
I2
I3
IN
V1
V2
V3
N
NS
Chassis Ground
Note 1: Power with 120 Vac or
230 Vac (or 125 Vdc or 250 Vdc)
EIA-232
DB9
EIA-232 &
IRIG-B
DB9
VS
+
—
Control
Power Supply
+
—
36 Vdc
Power Supply
See Note 1
Return
36 Vdc
HV FET Close
HV FET Trip
Monitored Close
Circuit Points
Monitored Trip
Circuit Points
B/D
C
A
E
F
IRIG-B
+ —
12345N/C7
8
FRONT-PANEL
OPERATOR CONTROLS
28 Vdc24 Vdc
24 Vdc or 36 Vdc
12 Vdc
FRONT-PANEL TARGET LEDS
AC
SUPPLY
CONTROL
ENABLED
BATTERY
PROBLEM
HOT LINE
TAG TRIP FAST CURVE
HIGH
CURRENT 81
CYCLERESET LOCKOUT AB C G SEF
CONTROL STATE FAULT TYPE
ORDERING OPTION
CURRENT INPUTSVOLTAGE INPUTS
ORDERING OPTION
* OUT107 CAN OPERATE AS EXTRA ALARM
JUMPER CONFIGURABLE
OUT101
A01
PROGRAMMABLE
OPTOISOLATED INPUTS
(IN102—IN106 Part of ordering options)
OUT101—OUT106 Part of ordering options)
A17
IN
101
IN
102
IN
103
IN
104
IN
105
IN
106
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
OUT102
OUT103
OUT104
OUT105
OUT106
OUT107*
ALARM
A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
PROGRAMMABLE OUTPUT CONTACTS

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
15
Relay Mounting
Figure 16 SEL-351R Falcon Lift-To-Open Enclosure Dimensions and Mounting

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
16
Figure 17 SEL-351R Falcon Swing-Open Enclosure Dimensions and Mounting

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
17
Specifications
Compliance
ISO 9001:2008 Certified
General
AC Current Inputs (Channels I1, I2, I3)
1 A nominal: 3 A continuous, linear to 20 A
symmetrical; 100 A for 1 s
Burden: 0.13 VA @ 1 A
1.31 VA @ 3 A
Sensitive Earth Fault (SEF) Channel IN Current Input
0.05 A nominal: 1.5 A continuous, linear to 1.5 A
symmetrical; 20 A for 1 s
Burden: 0.0004 VA @ 0.05 A, 0.36 VA @ 1.5 A
AC Voltage Inputs
300 VL-N continuous, (connect any voltage up to 300 Vac). 600 Vac for
10 s.
Burden: 0.03 VA @ 67 V
0.06 VA @ 120 V
0.80 VA @ 300 V
Power Supply
Rated Range: 85–264 Vac; 100–350 Vdc
Frequency Range: 40.1–65 Hz
Burden: <30 VA
12 V Radio Supply
11–14 Vdc, 6 W continuous, 13 W for 1 s
Output Contacts (Except Trip and Close)
Make: 30 A per IEEE C37.90-1989
Carry: 6 A continuous carry at 70°C
4 A continuous carry at 85°C
1 s Rating: 100 A
MOV Protection: 270 Vac / 360 Vdc; 40 J
Pickup Time: < 5 ms
Breaking Capacity (10000 operations, L/R = 40 ms):
24 V 0.75 A
48 V 0.50 A
125 V 0.30 A
250 V 0.20 A
Cyclic Capacity (2.5 cycle/second, L/R = 40 ms):
24 V 0.75 A
48 V 0.50 A
125 V 0.30 A
250 V 0.20 A
Note: Per IEC 60255-0-20:1974, using the simplified method of
assessment.
Trip and Close Outputs
3 A continuous @ –40° to 40° C, 1 min @ 85°C
Make and Carry: 5 A for 0.2 s @ 1 s intervals
Optoisolated Inputs
DC Range
24 Vdc: Pickup 15.0–30 Vdc
AC Range
24 Vdc: Pickup 12.8–30 Vdc
Note: Optoisolated inputs draw approximately 4 mA of current. All
current ratings are at nominal input voltages.
Frequency and Rotation
System Frequency: 50 or 60 Hz
Phase Rotation: ABC or ACB
Frequency Tracking
Range: 40.1–65 Hz
Note: Voltage connected to V1 required for frequency tracking.
Communications Ports
EIA-232: 2 Side
EIA-485 (optional): 1 Side, 2100 Vdc of isolation
Baud Rate: 300–38400 baud
Time-Code Input
Recloser control accepts demodulated IRIG-B time-code input at Port
1 (optional) and Port 2. Do not connect the time-code input into both
Port 1 and Port 2 at the same time. Recloser control time is
synchronized to within ±5 ms of time-source input.
Operating Temperature
Relay Module: –40° to +85°C (–40° to +185°F)
Batteries: –40° to +60°C (–40° to +140°F)
Entire SEL-351R Falcon
Unit: –40° to +50°C (–40° to +122°F)
Note: LCD contrast impaired for temperatures below –20°C (–4°F).
The entire SEL-351R Falcon unit was operation tested up to +70°C
(+158°F). The 20°C (36°F) difference between the +50°C rating and
+70°C allows for temperature rise due to sunlight.
Weight
16.7 kg (37 lbs) including batteries
Battery Specifications
Normal Capacity: 8.0 amp-hours at +25°C (+77°F)
Run Time: 20 hours at +25°C (+77°F)
8 hours at –40°C (–40°F)
Estimated Life: 4 years at +25°C (+77°F)
8 months at +60°C (+140°F)
Recharge Time: 55 hours at +25°C (+77°F)
Type Tests
Environmental Test
Cold: IEC 60068-2-1:1990
[EN 60068-2-1:1993]
Test Ad: 16 hours at –40°C
Damp Heat Cyclic: IEC 60068-2-30:1980
Test Db; 55°C, 12 + 12-hour cycles,
95% humidity
Dry Heat: IEC 60068-2-2:1974
[EN 60068-2-2:1993]
Test Bd: Dry heat, 16 hours at +85°C
Dielectric Strength and Impulse Tests
Dielectric: IEC 60255-5:1977
IEEE C37.90-1989
2500 Vac on analogs, contact inputs,
and contact outputs except Trip and
Close; 3100 Vdc on power supply for
10 s; 2200 Vdc on EIA-485
communications port

SEL-351R Falcon Data Sheet Schweitzer Engineering Laboratories, Inc.
18
Electrostatic Discharge Test
ESD: IEC 60255-22-2:1996
(8kVcontact discharge all pointsexcept
serial ports, 15 kV air discharge to all
other points)
RFI and Interference Tests
1 MHz Burst Disturbance: IEC 60255-22-1:1988 Level 3
(2500 V common, 1000 V differential)
Fast Transient
Disturbance: IEC 60255-22-4:1992 IEC 60801-4:1998 Level 4
(4000 V optional, 2000 V inputs)
Radiated EMI: IEC 60255-22-3:1989 Level 3, 10 V/m
IEEE C37.90.2-1995, 35 V/m
Exception:
5.5.2(2): Performed with 200 frequency steps per octave.
5.5.3: Digital Equipment Modulation Test not performed.
5.5.4: Test signal off between frequency steps to simulate keying.
Surge Withstand: IEEE C37.90.1-1989
3.0 kV oscillatory; 5.0 kV fast transient
Vibration and Shock Tests
Sinusoidal Vibration: IEC 60255-21-1:1988 Class 1
Shock and Bump: IEC 60255-21-2:1988 Class 1
Seismic: IEC 60255-21-3:1993 Class 2
Miscellaneous
Enclosure Protection: IEC 60529:1989, IP32/NEMA 3R
Recloser Type Tests
IEEE Std C37.60-2003 Clause 6.13.1, Oscillatory and fast transient
surge tests, performed in accordance with IEEE Std C37.90.1-2002
SurgeWithstand Capability (SWC) for Relays and Relay Systems
Associated with Electric Power Apparatus.
IEEE Std C37.60-2003 Clause 6.13.2, Simulated surge arrester
operation test, performed with the following recloser.
G&W Electric Viper-S, Solid Dielectric
Model:
Voltage Rating:
Current Break Rating:
Continuous Current
Rating:
VIP398ER-12S
38 kV
12.5 kA
800 A
Processing Specifications
AC Voltage and Current Inputs
16 samples per power system cycle, 3 dB low-pass filter cut-off
frequency of 560 Hz.
Digital Filtering
One cycle cosine after low-pass analog filtering.
Net filtering (analog plus digital) rejects dc and all harmonics greater
than the fundamental.
Protection and Control Processing
Four times per power system cycle.
Battery Monitor
Processing once per second.
Relay Elements
Instantaneous/Definite-Time Overcurrent Elements (50)
Current Pickup Range (A secondary)
1 A Nominal Channel: 0.05–20.00 A, 0.01 A steps
0.20–34.00 A, 0.01 A steps for
phase-to-phase elements
SEF (0.05 A IN)
Channel: 0.005–1.500 A, 0.001 A steps
Steady-State Pickup Accuracy
1 A Nominal Channel: ±0.01 A, ±3%
SEF (0.05 A IN)
Channel: ±0.001 A, ±5%
Transient Overreach: ±5% of pickup
Time Delay: 0.00–16,000.00 cycles, 0.25–cycle steps
Timer Accuracy: ±0.25 cycle, ±0.1%
Time-Overcurrent Elements (51)
Current Pickup Range (A secondary)
1 A Nominal Channel: 0.05–3.2 A, 0.01 A steps
SEF (0.05 A IN)
Channel: 0.005–0.160 A, 0.001 A steps
Steady-State Pickup Accuracy
1 A Nominal Channel: ±0.01 A, ±3%
SEF (0.05 A IN)
Channel: ±0.001 A, ±5%
Transient Overreach: ±5% of pickup
Time Dials
US: ±0.5–15.0, 0.01 steps
IEC: 0.05–1.00, 0.01 steps
Recloser Curves: 0.10–2.00, 0.01 steps
Curve Timing Accuracy
1 A Nominal Channel: ±1.50 cycles, ±4%
between 2 and 30 multiples of pickup
SEF (0.05 A IN)
Channel: ±1.50 cycles, ±4%
between 2 and 30 multiples of pickup
Under- (27)/Overvoltage (59) Elements
Pickup Ranges (V secondary)
Various Elements: 0.00–300.00 V, 0.01 V steps
Phase-to-Phase
Elements: 0.00–520.00 V, 0.01 V steps
Steady-State Pickup
Accuracy: ±2 V, ±5%
Transient Overreach: ±5%
Synchronism-Check Elements (25)
Slip Frequency Pickup
Range: 0.005–0.500 Hz, 0.001 Hz steps
Slip Frequency Pickup
Accuracy: ±0.003 Hz
Phase Angle Range: 0–80°, 1° steps
Transient Accuracy: ±4°
Under-/Overfrequency Elements (81)
Frequency: 40.1–65.00 Hz, 0.01 Hz steps
Time Delays: 2.00–16,000.00 cycles, 0.25-cycle steps
Timer Accuracy: ±0.25 cycle, ±0.1%
Steady-State plus
Transient Overshoot: ±0.01 Hz
Undervoltage Frequency
Element Block Range: 25.00–300.00 V

Schweitzer Engineering Laboratories, Inc. SEL-351R Falcon Data Sheet
19
SELOGIC Control Equation Variable Timers
Pickup Ranges
0.00–999,999.00 cycles: 0.25-cycle steps (reclosing relay and
some programmable timers)
0.00–16,000.00 cycles: 0.25-cyclesteps(someprogrammableand
other timers)
Pickup/Dropout Accuracy: ±0.25 cycle, ±0.1%
Metering Accuracy
Accuracies are specified at 20°C and at nominal system frequency
unless noted otherwise.
Voltages VA, VB, VC, VS,
3V0, V1, V2: ±0.2%, (67–300.0 V; wye connected)
Currents IA, IB, IC: 1 A nominal ±3 mA, ±0.1% (0.1–20 A)
Temperature Coefficient: [(0.0002%)/(°C)2] • (__°C–20°C)2
(see example below)
Phase Angle Accuracy: ±1.0°
Currents I1, 3I0, 3I2: 1 A nominal ±0.01 A, ±3% (0.1–20.0 A)
IN(SEF): 0.05 A IN nominal ±1 mA
±5% (0.01–1.5 A)
Example metering accuracy calculation for currents IA, IB, and ICdue
to preceding stated temperature coefficient:
For temperature of 40°C, the additional error for currents IA, IB,
and ICis: [(0.0002%)/(°C)2] • (40°C–20°C)2= 0.08%

20
© 2009–2015 by Schweitzer Engineering Laboratories, Inc. All rights reserved.
All brand or product names appearing in this document are the trademark or registered
trademark of their respective holders. No SEL trademarks may be used without written
permission. SEL products appearing in this document may be covered by U.S. and Foreign
patents.
Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under
federal and international copyright and patent laws in its products, including without lim-
itation software, firmware, and documentation.
The information in this document is provided for informational use only and is subject to
change without notice. Schweitzer Engineering Laboratories, Inc. has approved only the
English language document.
This product is covered by the standard SEL 10-year warranty. For warranty details, visit
www.selinc.com or contact your customer service representative.
*PDS351R-02*
SCHWEITZER ENGINEERING LABORATORIES
2350 NE Hopkins Court • Pullman, WA 99163-5603 USA
Phone: [phone] • Fax: [phone]
Internet: www.selinc.com • E-mail: [email protected]
SEL-351R Falcon Data Sheet Date Code 20150126
Notes