Sel 551 - Page 205

A.9
Date Code 20110408 Instruction Manual SEL-551 Relay
Firmware and Manual Versions
Instruction Manual
981201
Section 1
➤ Corrected typographical error on page 1–5 in (no date code change).
Section 2
➤ Updated Figure 2.6.
➤ Replaced missing Figure 2.8 on page 2-7.
Section 4
➤ Corrected headings on Settings Sheets.
Section 8
➤ Due to printer error, the Relay Self-Tests subsection was reinserted.
➤ Updated Figure 8.3 and Figure 8.4.
➤ Deleted Figure 8.5.
981027
Section 2
➤ Added new Connectorized model 05510W (plug-in connectors) explanation (following Figure 2.6).
Section 8
➤ Updated Figure 8.1 and Figure 8.2.
980831
Section 2
➤ Replaced Figure 2.1 and Figure 2.2 on pages 2-1 and 2-2 with updated drawings to provide more accurate
dimensions and changed figure captions.
➤ Clarified figure caption and replaced Figure 2.4 on page 2-3 with updated drawing.
970717
Section 1
➤ Added 24 V breaking capacity and cyclic capacity specifications to Output Contacts (page 1-5).
➤ Added a note to Level Sensitive input ratings and added 24 V power supply specifications to Power Supply
Ratings (page 1–6).
➤ Added power supply voltage input polarity sensitive warning to Power Supply Ratings (page 1–6).
➤ Changed all Demand Meter references to Demand Ammeter.
Section 3
➤ Changed all Demand Meter references to Demand Ammeter.
Section 4, Settings Sheets
➤ Changed all Demand Meter references to Demand Ammeter.
Section 5
➤ Changed all Demand Meter references to Demand Ammeter.
Section 6
➤ Changed all Demand Meter references to Demand Ammeter.
Appendix A
➤ Changed all Demand Meter references to Demand Ammeter.
970616 Reissued entire manual. Significant changes are listed below.
Section 1
➤ Removed subsection Output Contact Operating Times (output contact pickup/dropout information found in
General Specifications in the same section).
➤ Updated specifications in AC Input Currents, Output Contacts, Optoisolated Input Ratings, and Routine
Dielectric Test.
➤ Added IEC 255-21-2, IEC 255-22-2, IEC 255-22-3, IEC 255-22-4, and IEC 255-11.
➤ Added document dates to type tests and standards.
Section 3
➤ Added Demand Ammetering.
➤ Removed first settings example for settings 79RI and 79RIS [see Reclose Initiate and Reclose Initiate
Supervision Settings (79RI and 79RIS, Respectively)].
➤ Replaced second settings example for setting 79SEQ [see Sequence Coordination (79SEQ)].
Table A.2 Instruction Manual Revision History (Sheet 7 of 8)
Revision Date Summary of Revisions