Date Code 20080213 Instruction Manual SEL-351A Relay
Appendix I
Using the SEL-251 and SEL-267 Relay
Settings in the SEL-351A Relay
Overview
The SEL-251 and SEL-267 relays have subsets of the features found in the
SEL-351A Relay.
Substitute the SEL-351A for SEL-251 and SEL-267 relays in panel designs
that have wiring diagrams for these SEL-200 series relays. The SEL-351A has
terminal markings that are compatible with these relays. They are “wire-
alike,” as shown in Figure 2.2, Figure 2.5, and Figure 2.6.
Several internal differences between the products require an understanding of
their respective settings and features. Refer to a copy of the Instruction
Manual for the SEL-200 series relay, a copy of the settings for the relay, and
this SEL-351A Instruction Manual.
The delta-connected voltage models (SEL-251D and SEL-267D) can be
replaced with SEL-351A relays with firmware revision R105 or later).
Courtesy of NationalSwitchgear.com
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