8
Integrate New and Existing Substations Today Using the
SEL-2020 Communications Processor
-40°C
+85°C
Wide operating
temperature range.
in dark cubicles.
lettering is highly legible even
High-contrast white-on-blue
4
COMMUNICATIONS PROCESSOR
CAN RESULT IN INJURY OR DEATH
REMOVAL OF THIS PANEL EXPOSES CIRCUITRY
WHICH MAY CAUSE ELECTRICAL SHOCK THAT
W A R N I N G
SEL-2020
LED TEST
TXD
PORT 1 2 3
RXD
ALARM
SCHWEITZER ENGINEERING LABORATORIES
PULLMAN WASHINGTON USA
567891011 151312 14 16 F
197-0250
9
PORT F
5
678
6
3 24
1
1
Front service port for quick,
convenient, system setup,
checkout, and local access.
Clock battery lasts
10 years. No other
Maintenance required.
DWG: 1106-i04f.vsd
Shallow 200-series case
mounts in communications
rack or panel cutout.
Rugged enclosure
withstands EMI, RFI,
shock, and vibration.
LEDs indicate transmitted
and received activity on
each port for easy checkout.
for flush or
Reversible flanges
projection mounting.