Schweitzer Engineering Laboratories SEL-311C - Specifications

1.10
SEL-311C Relay Instruction Manual Date Code 20060320
Introduction and Specifications
Specifications
Specifications
Section 1 Introd uction and Spe cifications ``
General
AC Current Inputs
Nominal: 5 A
Continuous: 15 A, linear to 100 A symmetrical
500 A for 1 second
1250 A for 1 cycle
Burden: 0.27 VA @ 5 A
2.51 VA @ 15 A
Nominal: 1 A
Continuous: 3 A, linear to 20 A symmetrical
100 A for 1 second
250 A for 1 cycle
Burden: 0.13 VA @ 1 A
1.31 VA @ 3 A
AC Voltage Inputs
Nominal: 67 V
L-N
, three-phase four-wire
connection
Continuous: 150 V
L-N
continuous (connect any
voltage up to 150 Vac
365 Vac for 10 seconds)
Burden: 0.13 VA @ 67 V
0.45 VA @ 120 V
Power Supply
Rated: 125/250 Vdc or Vac
Range: 85–350 Vdc or 85–264 Vac
Burden: <25 W
Rated: 48/125 Vdc or 125 Vac
Range: 38–200 Vdc or 85–140 Vac
Burden <25 W
Rated: 24/48 Vdc
Range: 18–60 Vdc polarity dependent
Burden: <25 W
Output Contacts
Standard
Make:
30 A
Carry:
6 A continuous carry at 70°C
4 A continuous carry at 85°C
1 s Rating:
50 A
MOV Protection:
270 Vac, 360 Vdc, 40 J
Pickup Time: <5 ms
Breaking Capacity (10000 operations):
48 Vdc 0.50 A L/R = 40 ms
125 Vdc 0.30 A L/R = 40 ms
250 Vdc 0.20 A L/R = 40 ms
Cyclic Capacity (2.5 cycle/second):
48 Vdc 0.50 A L/R = 40 ms
125 Vdc 0.30 A L/R = 40 ms
250 Vdc 0.20 A L/R = 40 ms
Hybrid (High-Current Interrupting) Option (DC only)
Make:
30 A
Carry:
6 A continuous carry at 70°C
4 A continuous carry at 85°C
1 s Rating:
50 A
MOV Protection:
330 Vdc, 130 J
Pickup Time: < 5 ms
Dropout Time: <8 ms, typical
Breaking Capacity (10000 operations):
48 Vdc 10.0 A L/R = 40 ms
125 Vdc 10.0 A L/R = 40 ms
250 Vdc 10.0 A L/R = 20 ms
Cyclic Capacity (4 cycles/second, followed by 2 minutes idle for
thermal dissipation):
48 Vdc 10.0 A L/R = 40 ms
125 Vdc 10.0 A L/R = 40 ms
250 Vdc 10.0 A L/R = 20 ms
Note: Do not use high-current interrupting output contacts to
switch ac control signals. These outputs are polarity dependent.
Note: Make per IEEE C37.90-1989; Breaking and Cyclic Capacity
per IEC 60255-23:1994.
Fast Hybrid (High-Speed High-Current Interrupting) Option
Make:
30 A
Carry:
6 A continuous carry at 70°C
4 A continuous carry at 85°C
1 s Rating:
50 A
MOV Protection:
330 Vdc, 130 J
Pickup Time: < 200 µs
Dropout Time: <8 ms, typical
Breaking Capacity (10000 operations):
48 Vdc 10.0 A L/R = 40 ms
125 Vdc 10.0 A L/R = 40 ms
250 Vdc 10.0 A L/R = 20 ms
Cyclic Capacity (4 cycles/second, followed by 2 minutes idle for
thermal dissipation):
48 Vdc 10.0 A L/R = 40 ms
125 Vdc 10.0 A L/R = 40 ms
250 Vdc 10.0 A L/R = 20 ms
Note: Make per IEEE C37.90-1989; Breaking and Cyclic Capacity
per IEC 60255-23:1994.
Optoisolated Input Ratings
250 Vdc: Pickup 200–300 Vdc; dropout 150 Vdc
220 Vdc: Pickup 176–264 Vdc; dropout 132 Vdc
125 Vdc: Pickup 105–150 Vdc; dropout 75 Vdc
110 Vdc: Pickup 88–132 Vdc; dropout 66 Vdc
48 Vdc: Pickup 38.4–60 Vdc; dropout 28.8 Vdc
24 Vdc: Pickup 15–30 Vdc
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.
Note: 220 Vdc optoisolated inputs are not available in the
Connectorized version of the relay.