Sel 751A - Port 2 (Fiber-Optic Serial Port); Figure 7.6 IRIG-B Input VIA EIA-232 Port 3 (SEL-2401;2404;2407 Time Source); Figure 7.7 IRIG-B Input VIA Fiber-Optic EIA-232 Port 2 (SEL-2030;2032 Time Source); Figure 7.8 IRIG-B Input VIA Fiber-Optic EIA-232 Port 2 (SEL-2401;2404;2407 Time Source)

7.7
Date Code 20100129 Instruction Manual SEL-751A Relay
Communications
Communications Interfaces
Cannot use B01–B02 input or Port 2 if Port 3 is used.
Set Global setting IRIG TIME SOURCE to TIME_SRC := IRIG1.
Figure 7.6 IRIG-B Input VIA EIA-232 Port 3 (SEL-2401/2404/2407 Time
Source)
Option 3: Port 2 (Fiber-Optic Serial Port)
Fiber-Optic Serial Port 2 can be used to bring IRIG-B Input to the relay as
shown in Figure 7.7 and Figure 7.8.
Cannot use B01–B02 input or Port 3 input if Port 2 is used for IRIG-B input.
Set Global setting IRIG TIME SOURCE to TIME_SRC := IRIG2.
Figure 7.7 IRIG-B Input VIA Fiber-Optic EIA-232 Port 2 (SEL-2030/2032
Time Source)
Cannot use B01–B02 input or Port 3 input if Port 2 is used for IRIG-B input.
Set Global setting IRIG TIME SOURCE to TIME_SRC := IRIG2.
Figure 7.8 IRIG-B Input VIA Fiber-Optic EIA-232 Port 2 (SEL-2401/2404/
2407 Time Source)
SEL-2401
or
SEL-2407
SEL-2404
SEL-751A
DB9
BNC
IED
(Any EIA-232
serial application)
SEL Cable
C292A
SEL Cable
C953
BNC-T Connector (3-way)
SEL Part #240-1802
DB9
IRIG-B
Port 3
SEL-2812MT
SEL-2030
SEL-2032
EIA-232 Port
with IRIG
DB9
Fiber-Optic Cables
SEL C805 or SEL C807
Port 2
Set switch to 232 for IRIG-B
from SEL-2030 or SEL-2032
ST Connectors
SEL-751A
SEL-2812MT
SEL-2401
or
SEL-2407
SEL-2404
IED
DB9
Mono-Plug
Jack
Use Fiber-Optic Cables
SEL C805 or SEL C807
SEL Cable
C654
Port 2
Set switch to “J1” for IRIG input
from SEL-2401, etc.
ST
ST
BNC
SEL-751A