Date Code 20001006 Installation 2-7
SEL-351 Instruction Manual
MAKING REAR-PANEL CONNECTIONS
Refer to Figure 2.7 through Figure 2.14 for wiring examples of typical applications.
Refer to Table 1.1 and Figure 2.2 through Figure 2.5. Notice the two types of rear-panel hardware
connections. Reference is made to the model numbers in discussing rear-panel connection
differences in the following text.
Improvements in Connectorized
®
SEL-351 Relays (Plug-In Connectors) Result in Part
Number Changes
The current transformer shorting connector (for current channel inputs IA, IB, IC, and IN) has
been made more robust. This improvement makes the new connector design incompatible with the
old design. Thus, presently constructed Connectorized SEL-351 Relays with this improved
connector have a new part number (partial part numbers shown; see also Table 1.1 in Section 1:
Introduction and Specifications):
old new
0351xM → 0351xT
0351xJ → 0351xY
The respective wiring harness part numbers for these old and new Connectorized SEL-351 Relays
are (partial part numbers shown):
old new
WA0351xM → WA0351xT
WA0351xJ → WA0351xY
The other connectors on the Connectorized SEL-351 Relay rear panel (power input, voltage inputs,
output contacts, etc.) are the same for the old or new models. Only the current transformer
shorting connector has changed.
Figure 2.2 and Figure 2.5 show the rear panels for new models 0351xT and 0351xY, respectively.
These figures can also be used as a reference for old models 0351xM and 0351xJ, respectively.
All terminal labeling/numbering remains the same.
Required Equipment and General Connection Information
Models 0351xT and 0351xY (Plug-In Connectors)
Tools: small slotted-tip screwdriver, wire strippers
Parts: SEL-WA0351xT or SEL-WA0351xY Wiring Harness
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
