Schweitzer Engineering Laboratories SEL-251 - Page 4

ii Manual Change Information Date Code 20000421
SEL-251, -2, -3 Instruction Manual
Revision
Date
Summary of Revisions
971121 Added Settings Sheets to end of Section 5.
971107 Section 2 - Corrected logic in Figure 2.22.
971028 Section 2 - Corrected Drawings in Figures 2.1 and 2.2.
970418 Appendix A - Added New Firmware Versions.