U.A.25
Date Code 20090715 User’s Guide SEL-421 Relay
Firmware and Manual Versions
Instruction Manual
20020403 ➤ Initial Release with Synchrophasor Measurement capability to SEL-421.
➤ Added VAZ, VBZ, VCZ settings options to SYNCP.
➤ Added VAY, VBY, VCY settings options to SYNCS1, SYNCS2 and ASYNCS2.
➤ Added ACOS, ASIN, CEIL, FLOOR and LOG math functions to SELOGIC control equations.
➤ Added new analog quantities for use in SELOGIC control equations:
➢ Terminal W and X current magnitudes
➢ Terminal Y and Z voltage magnitudes
➢ Instantaneous sequence quantities
➢ Contact inputs
➤ Modified CHI output for SEL-2030 compatibility.
20020108 ➤ SEL-421-1 Relay introduction.
➤ Configurable front-panel labels.
➤ I and V Source Selection settings clarifications.
Preface
➤ Added Notes explanation.
User’s Guide
Section 1
➤ Added description of SEL-421-1 Relay.
➤ Added Notes to flag the differences in the SEL-421-1 Relay.
➤ Added Humidity to Specifications.
➤ Added SEL-421-1 Relay Maximum Operating Time to Specifications.
➤ Revised Power and Energy in Specifications.
Section 2
➤ Added Front-Panel Labels to describe configurable front-panel labels.
Section 3
➤ Added description of ACSELERATOR
®
SEL-5030 software Analysis function keys F2, F3, and F4.
➤ Revised Relay Editor settings tree view operation.
Section 4
➤ Included front-panel label kit in shipped items list.
➤ Added Notes to flag the differences in the SEL-421-1 Relay.
➤ Fixed Figure 4.45 and setting SER example procedure.
➤ Fixed Figure 4.55 and setting control input/52A example procedure.
Section 5
➤ Added descriptions of configurable front-panel labels.
Section 6
➤ Updated ACSELERATOR software screen captures.
Applications Handbook
Section 1
➤ Added Notes to flag the differences in the SEL-421-1 Relay.
➤ Corrected control inputs in Auto-Reclose Examples.
➤ Added explanation for missing setting 3PMRCD (Manual Close Reclaim Time Delay) in Recloser Closing.
Section 2
➤ Corrected communications equipment battery voltage to 48 Vdc in Figure 2.12.
➤ Revised text and Table 2.16 for power and energy specifications.
Section 3
➤ Corrected Compressed ASCII command example in Event File Download procedure.
Table A.5 Instruction Manual Revision History (Sheet 15 of 16)
Revision Date Summary of Revisions
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
