Schweitzer Engineering SEL-351P, Быстрый старт

Страница: 90 / 674

Date Code 990430 Manual Change Information i
SEL-351P Manual Técnico
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).
Manual Creation Date : 990215
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.
990430 This revision contains the following changes:
Section 1:
Added phase pickup setting 50P4P to Table 1.1. Setting 50P4P is set (in A
secondary) when Min. trip-phase is set (in A primary) in the EZ setting routing
(SET EZ command). Phase pickup setting 50P4P controls single-phase elements
50A4, 50B4, and 50C4, listed in Table 1.2. These single-phase elements
indicate faulted phases for the trip operations counters (see discussion on trip
operation counters in the
Breaker/Recloser Contact Wear Monitor subsection
in Section 8: Breaker/Recloser Monitor, Battery System Monitor, and Load
Profile Functions ).
Section 3:
Changed references in Figures 3.3, 3.8, 3.10, 3.12, 3.15, 3.16, 3.18, and 3.20.
The references are to
Section 4: Loss-of-Potential, Load Encroachment, and
Directional Element Logic figures that were added or changed around due to
the addition of a new directional element.
Section 4:
Added zero-sequence voltage polarized, neutral current directional elements to
Best Choice Ground Directional ™ Logic. Inserted the following drawings:
Figure 4.7: Internal Enable (32NE) for Zero-Sequence Voltage-Polarized,
Neutral-Current Directional Element
Figure 4.11: Zero-Sequence Voltage-Polarized, Neutral-Current Directional
Element for Neutral Ground Overcurrent Elements
Figure 4.13: Routing of Directional Element to Neutral Ground Overcurrent
Elements
Figure 4.15: Direction Forward/Reverse Logic for Neutral Ground
Overcurrent Elements