Date Code 20001006 Manual Change Information i
SEL-351 Instruction Manual
MANUAL CHANGE INFORMATION
The date code at the bottom of each page of this manual reflects the creation or revision date. Date
codes are changed only on pages that have been revised and any following pages affected by the
revisions (i.e., pagination). If significant revisions are made to a section, the date code on all pages
of the section will be changed to reflect the revision date.
Each time revisions are made, both the main table of contents and the affected individual section
table of contents are regenerated and the date code is changed to reflect the revision date.
Changes in this manual to date are summarized below (most recent revisions listed at top).
Revision
Date
Summary of Revisions
The Manual Change Information section has been created to begin a record of revisions to this
manual. All changes will be recorded in this Summary of Revisions table.
20001006 This revision includes the following changes:
Section 1:
− Corrected phase angle accuracy of synchronism check elements.
Section 2:
− Updated Figure 2.1 and accompanying text.
− Added cable for SEL-DTA2 to Table 2.1.
− Added note to Table 2.7 (Fast Operate).
Section 3:
− Corrected setting range for 59Q in Table 3.8.
− Added SYNCP angle setting option for delta-connected voltage relays.
− Clarified synchronism check logic description.
− Expanded setting range for 27B81P in Table 3.11.
Section 4:
− Added !LOP to 51PTC setting in the Apply Load-Encroachment Logic to the
Phase Time-Overcurrent subsection.
Section 5:
− Added explanation to the Target Reset/Lamp Test Front-Panel Pushbutton
subsection to indicate that the targets cannot be reset when a TRIP condition is
still present.
Section 6:
− Corrected 79DTL factory default setting in Table 6.4.
Courtesy of NationalSwitchgear.com
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