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 V
S
for synchronism check
and line voltage check
(channel V
S
connects
to A-phase in this example)
Control Cable
• Trip and Close
• Breaker Status
• I
A
, I
B
, I
C
, I
N
• 24 Vdc
120 Vac Power
120 Vac
Close Power
(if recloser
is equipped)
Load
Source
C
B
A
R
E
C
L
O
S
E
R
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
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
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
SEL-351S