2-8 Installation Date Code 20001006
SEL-351 Instruction Manual
Wiring Harness
The SEL-WA0351xT and SEL-WA0351xY Wiring Harnesses include all connectors necessary for
relay installation. All connectors requiring special termination come prewired from the factory.
Refer to the SEL-WA0351xT or SEL-WA0351xY Model Option Tables, which are available from
the factory.
The SEL-WA0351xT Wiring Harness includes the following connectors (not prewired):
• (5) 8-position female plug-in connectors for output contacts OUT1 through ALARM and
optoisolated inputs IN1 through IN8.
• (1) 5-position female plug-in connector for Serial Port 1 (EIA-485).
The SEL-WA0351xY Wiring Harness includes the following connectors (not prewired):
• (2) 8-position female plug-in connectors for output contacts OUT101 through ALARM.
• (2) 6-position female plug-in connectors for optoisolated inputs IN101 through IN106.
• (1) 8-position female plug-in connectors for EIA-485/IRIG-B Serial Port 1.
• (4) 6-position female plug-in connectors for output contacts OUT201 through OUT212.
• (2) 8-position female plug-in connectors for optoisolated inputs IN201 through IN208.
These connectors accept wire size AWG 24 to 12. Strip the wires 0.31 inches (8 mm) and install
with a small slotted-tip screwdriver. Secure each 8-position connector to the relay chassis with the
screws located on either end of the connector. The 8-position connectors are coded at the factory
to prevent swapping connectors during installation. Refer to Figure 2.6 for the standard
input/output connector coding.
Both wiring harnesses include the following prewired connectors:
• (1) ct shorting connector for current inputs IA, IB, IC, and IN.
• (1) connector for voltage inputs VA, VB, VC, and VS.
• (1) connector for POWER inputs (+ and -).
• (1) spade connector for GROUND connection (chassis ground).
These prewired connectors (and the serial port connector) are unique and may only be installed in
one orientation.
Courtesy of NationalSwitchgear.com
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