1.11
Date Code 20080103 Instruction Manual SEL-351S Relay
Introduction and Specifications
Specifications
Cyclic Capacity (4 cycles in 1 second, followed by 2 minutes
idle for thermal dissipation):
24 V 10 A L/R = 40 ms
48 V 10 A L/R = 40 ms
125 V 10 A L/R = 40 ms
250 V 10 A L/R = 20 ms
Note: Make per IEEE C37.90-1989.
Note: Do not use high-current interrupting output contacts to
switch ac control signals. These outputs are polarity dependent.
Note: Breaking and Cyclic Capacity per IEC 60255-0-20:1974.
Auxiliary Trip/Close Pushbuttons
(0351Sxxx5/6/A/B models only)
Resistive DC or AC Outputs with Arc Suppression Disabled (see
Table 2.9 and Table 2.10):
Make: 30 A
Carry: 6 A continuous carry
1s Rating: 50 A
MOV Protection: 250 Vac/330 Vdc/130 J
Breaking Capacity (10000 operations):
48 V 0.50 A L/R = 40 ms
125 V 0.30 A L/R = 40 ms
250 V 0.20 A L/R = 40 ms
Note: Make per IEEE C37.90-1989.
High Interrupt DC Outputs with Arc Suppression Enabled:
Make: 30 A
Carry: 6 A continuous carry
1s Rating: 50 A
MOV Protection: 330 Vdc/130 J
Breaking Capacity (10000 operations):
48 V 10 A L/R = 40 ms
125 V 10 A L/R = 40 ms
250 V 10 A L/R = 20 ms
Note: Make per IEEE C37.90-1989.
Breaker Open/Closed LEDs:
250 Vdc: on for 150–300 Vdc; 192–288 Vac
125 Vdc: on for 80–150 Vdc; 96–144 Vac
48 Vdc: on for 30–60 Vdc;
24 Vdc: on for 15–30 Vdc
Note: With nominal control voltage applied, each LED draws
8 mA (max.). Jumpers may be set to 125 Vdc for 110 Vdc input
and set to 250 Vdc for 220 Vdc input.
Optoisolated Input Ratings
When used with dc control signals:
250 Vdc: on for 200–300 Vdc; off below 150 Vdc
220 Vdc: on for 176–264 Vdc; off below 132 Vdc
125 Vdc: on for 105–150 Vdc; off below 75 Vdc
110 Vdc: on for 88–132 Vdc; off below 66 Vdc
48 Vdc: on for 38.4–60 Vdc; off below 28.8 Vdc
24 Vdc: on for 15–30 Vdc
When used with ac control signals:
250 Vdc: on for 170.6–300 Vac; off below 106.0 Vac
220 Vdc: on for 150.3–264.0 Vac; off below 93.2 Vac
125 Vdc: on for 89.6–150.0 Vac; off below 53.0 Vac
110 Vdc: on for 75.1–132.0 Vac; off below 46.6 Vac
48 Vdc: on for 32.8–60.0 Vac; off below 20.3 Vac
24 Vdc: on for 12.8–30.0 Vac
Note: AC mode is selectable for each input via Global settings
IN101D–IN106D; IN201D–IN208D. AC input recognition delay
from time of switching: 0.75 cycles maximum pickup;
1.25 cycles maximum dropout.
Note: 24, 48, 125, 220, and 250 Vdc optoisolated inputs draw
approximately 5 mA of current, 110 Vdc inputs draw
approximately 8 mA of current. All current ratings are at nominal
input voltages.
Time-Code Input
Relay accepts demodulated IRIG-B time-code input at Ports 1 or 2.
Synchronization (specification is with respect to the accuracy
of the time source)
Synchrophasor: ±10 μs
Other: ±5 ms
Communications Ports
EIA-232: 1 front, 2 rear
EIA-485: 1 rear with 2100 Vdc of isolation
Per Port Baud Rate
Selections:
300, 1200, 2400, 4800, 9600, 19200,
38400 (38400 is not available on
Port 1)
Dimensions
Refer to Figure 2.1.
Weight
16 lbs (7.24 kg)—3U rack unit height relay
Operating Temperature
–40° to +185°F (–40° to +85°C)
(LCD contrast impaired for temperatures below –20ºC.)
Type Tests
Environmental Tests
Cold: IEC 60068-2-1:1990 Basic
Environmental testing procedures,
Part 2: Tests – Test Ad: Cold
Damp Heat Cyclic: IEC 60068-2-30:1980 Basic
environmental testing procedures,
Part 2: Tests, Test Db and guidance:
Damp heat, cyclic (12 + 12-hour
cycle), (six-day type test)
IEC 60529:1989 [EN 60529–1992]
Degrees of Protection Provided by
Enclosures (IP code): Object
penetration and dust ingress, IP30 for
category 2 equipment.
Dry Heat: IEC 60068-2-2:1974 Basic
environmental testing procedures,
Part 2: Tests – Test Bd: Dry Heat
Routine Dielectric and Impulse Tests
Current inputs,
optoisolated inputs,
and output contacts: 2500 Vac for 10 s
Power supply: 3100 Vdc for 10 s
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