Specifications
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 75
Time-Code Input
Relay module accepts demodulated IRIG-B time-code input at Port 1 and Port 2
(Port 1 is an optional EIA-485 port). Do not connect the time-code input into both
Port 1 and Port 2 at the same time. Relay time is synchronized to within ±5 ms of
time-source input.
Serial
Communications
Two side-panel and one front-panel EIA-232 serial communications ports.
One optional side panel EIA-485 serial port with 2100 Vdc of isolation.
Per-port baud rate selections: 300, 1200, 2400, 4800, 9600, 19200, 38400.
Routine Dielectric
Test
Control ac power: 2500 Vac for 10 seconds.
Optoisolated inputs, analog inputs, and output contacts except Trip and Close:
3100 Vdc for 10 seconds.
Operating Temp.
Relay module: -40° to +85°C (-40° to +185°F)
[LCD contrast impaired for temps. below -20°C (-4°F)]
Environment
IEC 68-2-30 - 1980 Basic environmental testing procedures, Part 2: Test - Tests
Ca; Damp heat, cyclic. Severity Level: (12 + 12-hr cycle).
IEC 529 - 1989 Degrees of protection provided by enclosures - IP32/NEMA 3R
(type test).
RFI and
Interference Tests
ANSI/IEEE C37.60.6.14 - 1981 Control Elements SWC tests for automatic circuit
reclosers and fault interrupters for AC systems, Oscillatory Surge Test method,
6.14.1, applied to control element connections to external devices, 1.0 to 1.5 MHz
oscillatory test wave of crest voltage of 2.5 - 3.0 kV occurring in the first half-
cycle, decaying to 50% in not less than 6 μs.
IEEE C37.90.1 - 1989 IEEE SWC Tests for Protective Relays and Relay Systems
(3 kV oscillatory, 5 kV fast transient) (type test).
IEEE C37.90.2 - 1987 IEEE Trial-Use Standard, Withstand Capability of Relay
Systems to Radiated Electromagnetic Interference from Transceivers, 10 V/m
(type test with enclosure door open).
Exceptions:
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 turned off between frequency steps to simulate
keying.
IEC 801-4 - 1988 Electromagnetic compatibility for industrial-process
measurement and control equipment, Part 4: Electrical fast transient/burst
requirements, Severity Level: 4 (4 kV on optional power supply, 2 kV on inputs
and outputs) (type test).
IEC 255-22-1 - 1988 Electrical disturbance tests for measuring relays and
protection equipment, Part 1: 1 MHz burst disturbance tests. Severity Level 3
(2.5 kV common mode, 1.0 kV differential) (type test).
IEC 255-22-3 - 1989 Electrical relays, Section 3: Radiated electromagnetic field
disturbance tests, Severity Level: 3 (10 V/m) (type test).
IEC 255-22-4 - 1992 Electrical disturbance tests for measuring relays and
protection equipment, Section 4: Fast transient disturbance test (type test).
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