A.10
SEL-351A Relay Instruction Manual Date Code 20080213
Firmware and Manual Versions
Instruction Manual
This manual differs from the previous version as follows:
20030212
➤ Updated the manual date code to match new firmware release.
Appendix A
➤ Updated for firmware version R107.
This manual differs from the previous version as follows:
20021106
Section 1
➤ Added CT Saturation Protection information.
➤ Modified Output Contacts specification.
➤ Corrected typographical errors.
Section 4
➤ Added a note describing Z2F and Z2R calculation upper limit.
➤ Added a note describing Z0F and Z0R calculation upper limit.
Section 8
➤ Added a description of accumulated energy metering value function.
Section 9
➤ Added CT sizing information and examples.
➤ Corrected the cycle steps value for breaker close time (TCLOSD) for angle compensation in the synchronism
check elements.
Section 10
➤ Added a description of accumulated energy metering value function.
Section 11
➤ Modified Figure 11.4.
Section 12
➤ Modified Standard Event Report Summary on page 12.4 discussion.
➤ Added “pk” to Figure 12.1.
➤ Added “pk” to the event summary in the Example Standard 15-Cycle Event Report on page 12.24.
Appendix A
➤ Updated for firmware version R106.
Appendix D
➤ Added ESV information under SET command.
➤ Moved SET command information before SET L command information.
➤ Corrected Fast Operate reset description string for A5CD Fast Operate Reset Definition Block.
This manual differs from the previous version as follows:
20020618
➤ Reissued entire manual.
➤ The changes in this revision relate to the new global setting PTCONN that allows the relay to be configured for
either wye- or delta-connected PTs; new global setting VSCONN that allows the relay to be configured for a
synchronism check or broken delta voltage input to the VS-NS terminals; new group setting VNOM, and the
addition of the 0.2 A nominal neutral channel (IN) current input option. This option provides ground directional
control for low-impedance grounded, Petersen Coil grounded, and ungrounded/high-impedance grounded sys-
tems (see Table 4.1).
Section 1
➤ Revised Table 1.1 to include optional plug-in connector models.
➤ Added subsection: Potential Transformer Connections on page 1.4.
➤ Added voltage input notes to Figure 1.2.
➤ Added information on the following to the General Specifications subsection: 0.2 A nominal neutral channel
(IN) current input option, frequency tracking with positive-sequence voltage V
1
(when V
A
not available),
220 Vdc optoisolated inputs, and extended lower end of pickup setting range for residual-ground overcurrent
elements.
➤ Added AC Input Voltage and Metering specifications for open-delta connected PTs.
Table A.3 Instruction Manual Revision History (Sheet 4 of 10)
Revision
Date
Summary of Revisions
Courtesy of NationalSwitchgear.com
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