sel -351 directional overcurrent relay reclosing …

Cvr-toc.PDFFAULT LOCATOR
INSTRUCTION MANUAL
SCHWEITZER ENGINEERING LABORATORIES 2350 NE HOPKINS COURT PULLMAN, WA USA 99163-5603 TEL: (509) 332-1890 FAX: (509) 332-7990
The software (firmware), schematic drawings, relay commands, and relay messages are copyright protected by the United States Copyright Law and International Treaty provisions. All rights are reserved.
You may not copy, alter, disassemble, or reverse-engineer the software. You may not provide the software to any third party.
All brand or product names appearing in this document are the trademark or registered trademark of their respective holders.
Schweitzer Engineering Laboratories, SELOGIC, Connectorized, Job Done and are registered trademarks of Schweitzer Engineering Laboratories.
The English language manual is the only approved SEL manual.
Copyright © SEL 1997, 1998, 1999, 2000 (All rights reserved) Printed in USA.
This product is covered by U.S. Patent Numbers: 5,041,737; 5,208,545; 5,317,472; 5,349,490; 5,365,396; 5,367,426; 5,479,315; 5,515,227; 5,602,707; 5,652,688; 5,694,281; 5,790,418; 5,793,750; 5,883,578 U.S. Patent(s) Pending, and Foreign Patent(s) Issued and Pending.
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:
Section 2:
− Added cable for SEL-DTA2 to Table 2.1.
− Added note to Table 2.7 (Fast Operate).
Section 3:
− 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:
ii Manual Change Information Date Code 20001006 SEL-351 Instruction Manual
Revision Date
− Added Details on the Remote Control Switch MOMENTARY Position subsection.
− Clarified the operation of the latch control switches when the SEL-351 Relay loses power (see the Latch Control Switches subsection).
− Corrected subsection Relay Disabled Momentarily During Active Setting Group Change.
Section 8:
Section 9:
− Corrected error in the Relay Word bit description for 51G in Table 9.4.
− Added SYNCP angle setting option for delta-connected voltages to Settings Sheet 9.
− Expanded setting range for 27B81P on Settings Sheet 9.
− Added description of RTSCTS = MBT setting choice to the Port Settings Sheet.
− Added AUTO = DTA setting choice to the Port Settings Sheet.
Section 10:
− Added DTA2 compatibility information.
− Added notes about powering down the relay after setting the date or time.
− Corrected HIS command information.
− Added note to TAR R command description.
− Added details to COP command description.
− Added VER Command (Show Relay Configuration and Firmware Version).
− Revised SEL-351 Command Summary.
Section 12:
Date Code 20001006 Manual Change Information iii SEL-351 Instruction Manual
Revision Date
Appendix B:
− Added information to Step 16 in the Upgrade Procedure for Breaker Wear Monitor data.
Appendix D:
− Updated ID Message.
− Updated CAS Message.
− Updated Table G.2.
− Corrected spelling of DECPLA, DECPLV, and DECPLM settings for DNP.
Appendix I:
20000424 This revision includes the following literature changes (no firmware changes):
Section 4:
Appendix A:
− Corrected Firmware Version information page to add the loss-of-potential V1
unlatch threshold changes previously updated in firmware revisions R111 and R205.
Appendix H:
− Corrected documentation errors in DNP 3.0 Device Profile, page H-5.
iv Manual Change Information Date Code 20001006 SEL-351 Instruction Manual
Revision Date
Updated MIRRORED BITS™ format throughout to reflect new trademark.
Section 3:
− Added explanation to the Synchronism Check Elements subsection for the new angle setting option for the SYNCP (synchronizing phase) setting. Synchronism check can now be accomplished for synchronism check voltage input VS connected phase-to-phase or beyond a delta-wye transformer. Setting SYNCP accounts for the constant angle difference between reference voltage VA and synchronism check voltage input VS.
Section 9:
− Expanded the setting range for the SYNCP (synchronizing phase) setting to accommodate compensation angle settings for synchronism check (Settings Sheet 9 of 24).
− Added the MB8A and MB8B serial port protocol settings options for MIRRORED BITS protocol operating on communication channels requiring an eight bit data format (Settings Sheet 24 of 24).
Appendix A:
Appendix I:
− Explained the MB8A and MB8B serial port protocol settings options for MIRRORED BITS protocol operating on communication channels requiring an eight data bit format.
Incorporated the following changes into Table 9.10 in Section 9: Setting the Relay.
− Added Relay Word bit rows (36) and (44) for models 0351x0, 0351x1, and 0351xY.
− Changed INT3P to INB in Relay Word Bit row 48 (52).
− Inserted * as necessary throughout table to indicate unused Relay Word bits.
Date Code 20001006 Manual Change Information v SEL-351 Instruction Manual
Revision Date
Replaced Section 1: Introduction and Specifications:
− Updated information concerning new model numbers throughout.
− Added new Figure 1.4; all following figures renumbered.
− Updated information in Output Contacts subsection in General Specifications.
Section 2:
− Replaced Circuit Board Jumpers and Battery with Circuit Board Connections and updated information within that subsection.
− Added new Figure 2.17; updated and renumbered original Figure 2.17.
− Updated information in Table 2.2 and Table 2.8. − Updated information in the Clock Battery subsection.
Section 7:
Section 9:
− Updated Settings Sheets to reflect new model numbers; other minor corrections.
Section 10:
Section 11:
− − Added 110 Vdc optional input level to Optoisolated Input Ratings in Section 1: Introduction and Specifications
− Added 110 V nominal battery voltage to Section 8: Breaker Monitor, Metering, and Load Profile Functions
− SELOGIC® Control Equation torque control settings can no longer be set directly to logical 0, as explained in the overcurrent element sections of Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements and the SELOGIC Control Equations settings sheets in the back of Section 9: Setting the Relay.
− SELOGIC Control Equations drive-to-lockout setting 79DTL has a 60-cycle dropout time, as explained in Section 6: Close and Reclose Logic.
− SELOGIC Control Equations settings limitations explained in Table G.2 in Appendix G: Setting SELOGIC Control Equations.
vi Manual Change Information Date Code 20001006 SEL-351 Instruction Manual
Revision Date
− New factory default SELOGIC® Control Equation setting 79RIS = 52A + 79CY (reclose initiate supervision) explained in Section 6: Close and Reclose Logic.
− SELOGIC Control Equation setting FAULT now momentarily suspends demand metering updating and peak recording as explained in Section 8: Breaker Monitor, Metering, and Load Profile Functions.
− Changed entry “Obj. 50, Var. 1, Time and Date” in Table H.2 in Appendix H: Distributed Network Protocol (DNP) V3.00.
980915 This revision includes the following changes: − Updated Appendix A: Firmware Versions.
− Added Voltage Sag/Swell/Interruption elements to Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements.
− Updated Relay Word and Explanations in Section9: Setting the Relay.
− Added SSI command to Section 10: Serial Power Communications and Commands.
− − Updated Event report storage and added Voltage Sag/Swell/Interruption report in Section 12: Standard Event Reports, Sag/Swell/Interruption Report, and SER.
Updated format and cross-references, reissued complete manual.
Date Code 20001006 Manual Change Information vii SEL-351 Instruction Manual
Revision Date
− Added Power Elements to Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements.
− Added Load Profiling to Section 8: Breaker Monitor, Metering, and Load Profile Functions.
− Updated Relay Word and explanations in Section 9: Setting the Relay.
− Added COM and LOO commands to Section 10: Serial Port Communications and Commands.
− Updated Event report and explanations in Section 12: Standard Event Reports and SER.
− Clarified DNP implementation details in Appendix H: Distributed Network Protocol (DNP) V3.00.
− Added Appendix I: Mirrored Bits.
− Synchronism-check voltage input logic in Figure 3.26 was clarified. Voltage input VA (or VAB for delta), provides frequency determination and has to be within the “healthy voltage” window (indicated by new Relay Word bit 59VA).
− Positive-sequence voltage-polarized directional element logic in Figure 4.15 is clarified with respect to the three-phase current threshold element 50P32 (was previously shown in the wrong place).
− The OPEN command is no longer embedded in the trip logic in Figure 5.1 (see the Note following 4.2) or in the drive-to-lockout logic (see the Note in the Lockout State discussion, following Table 6.1).
− Execution of the OPEN command no longer prevents the COMM target LED from illuminating for a trip. This provides additional options for the COMM target LED, discussed in the Front-Panel Target LEDs subsection at the end of Section 5: Trip and Target Logic.
− Relay Word bit TRGTR (Target Reset) is now available and provides additional options, detailed in Figure 5.17 and accompanying discussion.
− The CLOSE command is no longer embedded in the close logic in Figure 6.1 (see the Note in the SET Close discussion, following Figure 6.1, for more information).
− Relay Word bit 52A (Circuit Breaker Status) is now available and provides additional options, detailed near the end of the Close Logic subsection in Section 6: Close and Reclose Logic.
− Additional Relay Word bits 59VA, TRGTR, and 52A added to Row 34 in Tables 9.4 and 9.8.
− Revisions were made to accommodate hardware changes related to model SEL- 03510J/03511J, which are connectorized™. New drawings were added to Section 2: Installation, and various model-specific text references were updated throughout the manual.
viii Manual Change Information Date Code 20001006 SEL-351 Instruction Manual
Revision Date
Added Delta-Connected Voltage Ordering Option:
− − Voltage input and metering specifications updated in the General Specifications subsection in Section 1: Introduction and Specifications.
− − Voltage element specifications updated in Section 3: Overcurrent, Voltage, Synchronism Check, and Frequency Elements.
− − The nonavailability of the zero-sequence voltage-polarized directional element explained in subsections Directional Control for Neutral Ground and Residual Ground Overcurrent Elements and Directional Control Settings (setting ORDER) in Section 4: Loss-of-Potential, Load Encroachment, and Directional Element Logic.
− − Voltage element specifications updated in the Settings Sheets at the end of Section 9: Setting the Relay.
− − Low-Level Test Interface added to Section 13: Testing and Troubleshooting.
− − Added DNP protocol to Settings Sheets at the end of Section 9: Setting the Relay and to the Software Protocol in Section 10: Serial Port Communications and Commands. Added Appendix H.
− − Added part number (PARTNO) to Appendix B: Firmware Upgrade Instructions.
Added SEL-351 Relay Models 035100 and 035101:
− Table 1.1 and accompanying text give an overview of the differences between the various SEL-351 Relay Models.
− Table 1.1 references other figures that help explain the differences between the various SEL-351 Relay models.
− Section 2: Installation has been extensively rewritten to better explain differences between the various SEL-351 Relay models.
− Settings Sheets at the end of Section 9: Setting the Relay have been expanded to include the settings for extra optoisolated inputs and output contacts in the new SEL-351 Relay models. Also added enable setting references. Table 9.1 references the different Settings Sheets. Table 9.3 references other tables that explain the Relay Word bit differences between the various SEL-351 Relay models.
− Table 10.1 lists serial port information for all the SEL-351 Relay models.
− − Table 12.3 explains the differences in displaying optoisolated input and output contact information in the event reports for the SEL-351 Relay models.
Date Code 20001006 Manual Change Information ix SEL-351 Instruction Manual
Revision Date
Added 0.05 A Ordering Option for Channel IN [Sensitive Earth Fault (SEF) Applications]: − Current input, overcurrent, and metering specifications updated in the General
Specifications subsection in Section 1: Introduction and Specifications.
− Neutral ground overcurrent element pickup specifications updated in Section 3: Overcurrent, Voltage, Synchronism Check, and Frequency Elements.
− The nonavailability of the channel IN current-polarized directional element explained in subsections Directional Control for Neutral Ground and Residual Ground Overcurrent Elements and Directional Control Settings (setting ORDER) in Section 4: Loss-of-Potential, Load Encroachment, and Directional Element Logic.
− Neutral Ground demand current pickup specifications updated in Table 8.3 in Section 8: Monitoring and Metering Functions.
− Neutral ground overcurrent element and demand current pickup specifications updated in the Settings Sheets at the end of Section 9: Setting the Relay. Channel IN current transformer ratio setting (CTRN) range expanded to 10,000.
Modified Recloser Logic:
− Relay goes to the Lockout State for Open Command execution [see OPE Command (Open Breaker) in Section 10: Serial Communications and Commands].
Other Significant Manual Changes:
General Specifications in Section 1: Introduction and Specifications:
− Updated specifications in AC Voltage Inputs, AC Current Inputs, Output Contacts, and Routine Dielectric Test.
− − Added IEC 255-22-4 and IEC 255-21-3.
− Expanded on MW / MVAR metering accuracy specifications.
− Section 1, Page 1-11 - changed Phase Angle Accuracy to ±0.5°.
− Section 3, Page 3-26 - enlarged Figure 3.20 (date code not changed).
− Section 4, Page 4-3 - fixed format of Figure 4.2 (date code not changed).
− Section 7, Page 7-17 - reprint to fix printer error (date code not changed).
− Section 8, Pages 8-8 to 8-12 - reprint to fix printer error affecting Figures 8.1, 8.2, and 8.4 - 8.7 (date code not changed).
x Manual Change Information Date Code 20001006 SEL-351 Instruction Manual
Revision Date
− Section 9, Page 9-7 - add clarifying statement to text preceding Table 9.3.
− Section 9, Settings Sheets, Page 7 of 18 - fix typographical error under Reclosing Relay; Page 10 of 18 - add clarifying statement to text at top of page.
Date Code 20001006 Table of Contents i SEL-351 Instruction Manual
SEL-351 INSTRUCTION MANUAL TABLE OF CONTENTS
SECTION 1: INTRODUCTION AND SPECIFICATIONS
SECTION 2: INSTALLATION
SECTION 5: TRIP AND TARGET LOGIC
SECTION 6: CLOSE AND RECLOSE LOGIC
SECTION 7: INPUTS, OUTPUTS, TIMERS, AND OTHER CONTROL LOGIC
SECTION 8: BREAKER MONITOR, METERING, AND LOAD PROFILE FUNCTIONS
SECTION 9: SETTING THE RELAY
SECTION 10: SERIAL PORT COMMUNICATIONS AND COMMANDS
SECTION 11: FRONT-PANEL INTERFACE
SECTION 13: TESTING AND TROUBLESHOOTING
SECTION 14: APPENDICES
Appendix C: SEL Distributed Port Switch Protocol
Appendix D: Configuration, Fast Meter, and Fast Operate Commands
Appendix E: Compressed ASCII Commands
Appendix F: Setting Negative-Sequence Overcurrent Elements
Appendix G: Setting SELOGIC ® Control Equations
Appendix H: Distributed Network Protocol (DNP) V3.00
Appendix I: MIRRORED BITS™
Date Code 20001006 Introduction and Specifications i SEL-351 Instruction Manual
TABLE OF CONTENTS
SEL-351 Relay Models.............................................................................................................1-1 Instruction Manual Sections Overview......................................................................................1-3 Applications .............................................................................................................................1-7 Hardware Connection Features .................................................................................................1-8 Communications Connections .................................................................................................1-12 General Specifications ............................................................................................................1-13
0351x1, and 0351xY; Models 0351x1 and 0351xY Have an Extra I/O Board – See Next 2 Figures) ....................................................................................................1-9
Figure 1.4: SEL-351 Relay Extra I/O Board (Model 0351xY, Plug-In Connector Version; Main Board Shown in Figure 1.3) ......................................................................................1-10
Figure 1.5: SEL-351 Relay Extra I/O Board (Model 0351x1, Screw-Terminal Block Version; Main Board Shown in Figure 1.3) .............................................................................1-11
Figure 1.6: SEL-351 Relay Communications Connections Examples.................................................1-12
SECTION 1: INTRODUCTION AND SPECIFICATIONS
This section includes the following overviews of the SEL-351 Relay:
SEL-351 Relay Models
Instruction Manual Sections
Table 1.1: SEL-351 Relay Models
Model Number
0351x1 3U 6/8 (main board) screw-terminal block
standard 1.3, 2.4, 2.5, 7.2, 7.29
8/12 (extra I/O board)
0351xY (and old 0351xJ)
same as 0351x1
1.3, 1.4, 2.4, 2.5, 2.6, 7.2, 7.3, 7.29, 7.30
Old models 0351xM and 0351xJ have been superseded by models 0351xT and 0351xY, respectively. This is due to improvements in Connectorized® SEL-351 Relays (plug-in connectors) – see Section 2: Installation for more details. Unless otherwise noted, references to models 0351xT and 0351xY also apply to old models 0351xM and 0351xJ, respectively.
The model numbers are derived from the SEL-351 Relay ordering information sheet. The model numbers in Table 1.1 are only the first part of an actual ordering number – enough to distinguish one model type from another. The “x” field indicates the firmware version (see Table 1.2).
1-2 Introduction and Specifications Date Code 20001006 SEL-351 Instruction Manual
These numbers should not be used to order an SEL-351 Relay. Refer to the actual ordering information sheets.
Model 0351x0 and 0351x1 differ only in that model 0351x1 has an extra I/O board (and thus increased rack unit height – see Figure 2.1). Model 0351xY is similar to model 0351x1, except that it has plug-in connectors.
A vertical SEL-351 Relay is available in the 0351x1 and 0351xY models only (see Figure 2.5). The vertical relays use the same rear panels as the horizontal 0351x1 and 0351xY models in Figure 2.4. Though Figure 2.4 shows the extra I/O board (OUT201 through IN208) for model 0351x1, the vertically-mounted version of this model can be ordered without this extra I/O board (the space appears blank). Any SEL-351 Relay model can be ordered with sensitive Earth Fault (SEF) neutral ground overcurrent elements.
Voltage element differences due to wye- or delta-connected voltage inputs are detailed in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements. Neutral ground overcurrent element differences due to 0.05 A nominal channel IN (SEF) are detailed in the same section. Certain ground directional elements are nonoperational if the SEL-351 Relay is ordered with delta-connected voltage inputs or 0.05 A nominal channel IN (see Section 4: Loss-of- Potential, Load Encroachment, and Directional Element Logic). See Figure 1.2 and Figure 1.3 for more information on voltage input and SEF options.
Throughout this instruction manual, when differences among the SEL-351 Relay models in Table 1.1 are explained, model numbers are referenced for clarity. Most of the examples in this instruction manual are for SEL-351 Relay model 0351xT – it was the first released SEL-351 Relay model (actually first released as model 0351xM; see Table 1.1).
Differences between model 0351xT and models 0351x0, 0351x1, and 0351xY show up in references to optoisolated inputs, output contacts, and board jumpers. See the Reference Figures in Table 1.1 for the numbering differences between model 0351xT and models 0351x0 and 0351x1 (e.g., optoisolated input labeled as IN1 on model 0351xT, compared to IN101 on model 0351x0). Figure 2.15 through Figure 2.18 and Table 2.2 through Table 2.8 show the labeling differences between the board jumpers.
Table 1.2: SEL-351 Firmware Versions
Model Number Firmware Version Relay Features
03510 0 Standard features.
03511 1 Standard features plus MIRRORED BITS™ and load profiling.
SEL-351 Relays with firmware version 0 can be upgraded to firmware version 1. However, SEL-351 Relays with firmware versions 0 and 1 cannot be upgraded to any higher firmware versions. This is due to hardware limitations.
The wye-connected voltage inputs for SEL-351 Relays with firmware version 0 or 1 are rated for voltages up to 150 Vac, line-to-neutral (channel VS, too).
The delta-connected voltage inputs for SEL-351 Relays with firmware version 0 or 1 are rated for voltages up to 300 Vac, line-to-line (channel VS, too).
03512 2 Includes firmware version 1 features plus power elements.
03513 3 Includes firmware version 1 features plus voltage sag/swell/interruption elements.
03514 4 Includes firmware version 1 features plus power and voltage sag/swell/interruption elements.
SEL-351 Relays with firmware versions 2, 3, or 4 come with wye-connected voltage inputs only (connect any voltage up to 300 Vac, line-to-neutral).
INSTRUCTION MANUAL SECTIONS OVERVIEW
The following is an overview of the other sections in this instruction manual:
Section 2: Installation describes how to mount and wire the SEL-351 Relay. Connections for numerous applications are described. The operation of circuit board jumpers is explained. Figure 2.2 through Figure 2.5 show the SEL-351 Relay front and rear panels.
Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements describes the operation of:
• Instantaneous/definite-time overcurrent elements (phase, neutral ground, residual ground, and negative-sequence)
• Time-overcurrent elements (phase, neutral ground, residual ground, and negative- sequence)
• Voltage elements (single-phase, phase-to-phase, etc.)
• Synchronism check elements
• Voltage Sag/Swell/Interruption Elements (in Firmware Versions 3 and 4).
• Loss-of-potential logic and its effect on directional elements
• Load-encroachment logic and its application to phase overcurrent elements
• Voltage-polarized and current-polarized directional elements
• Best Choice Ground Directional™ logic and automatic settings
Section 5: Trip and Target Logic describes the operation of:
• General trip logic
• Switch-onto-fault trip logic
• Communications-assisted trip logic
• Front-panel target LEDs
Most tripping applications (not requiring switch-onto-fault or communications- assisted tripping) require only SELOGIC® Control Equation trip setting TR and unlatch trip setting ULTR in the general trip logic (see Figure 5.1).
Section 6: Close and Reclose Logic describes the close logic operation for:
• Automatic reclosures
• Other close conditions (e.g., manual close initiation via serial port or optoisolated inputs)
Section 7: Inputs, Outputs, Timers, and Other Control Logic describes the operation of:
• Optoisolated inputs (IN1 through IN8 - model 0351xT; IN101 through IN106 - models 0351x0, 0351x1, and 0351xY; IN201 through IN208 - models 0351x1 and 0351xY)
• Local control switches (local bit outputs LB1 through LB8)
• Remote control switches (remote bit outputs RB1 through RB8)
• Latch control switches (latch bit outputs LT1 through LT8)
• Multiple setting groups (six available)
• Programmable timers (timer outputs SV1T through SV16T)
• Output contacts (OUT1 through OUT11 and ALARM - model 0351xT; OUT101 through OUT107 and ALARM - models 0351x0, 0351x1, and 0351xY; OUT201 through OUT 212 - models 0351x1 and 0351xY)
• Rotating default displays
Date Code 20001006 Introduction and Specifications 1-5 SEL-351 Instruction Manual
Section 8: Breaker Monitor, Metering, and Load Profile Functions describes the operation of:
• Breaker monitor
• Load Profile (in Firmware Versions 1 to 4)
Section 9: Setting the Relay explains how to enter settings and also contains the following setting reference information:
• Time-overcurrent curves (5 US and 5 IEC curves)
• Relay Word bit table and definitions (Relay Word bits are used in SELOGIC Control Equation settings)
• Settings Sheets for general relay, SELOGIC Control Equation, global, SER, text label, and serial port settings
The Settings Sheets are single-sided and can be photocopied and filled out to set the SEL-351 Relay. Note that these sheets correspond to the serial port SET commands listed in Table 9.1.
Section 10: Serial Port Communications and Commands describes:
• Serial port connector pinout/terminal functions
• Communications cables
• Communications protocol
• Serial port commands
See SHO Command (Show/View Settings) in Section 10 for a list of the factory default settings the SEL-351 Relay ships with in a standard relay shipment.
Section 11: Front-Panel Interface describes the front-panel operation of:
• Pushbuttons and correspondence to serial port commands
• Local control switches (local bit outputs LB1 through LB8)
• Rotating default displays
• Standard 15- and 30-cycle event reports
• Sequential events recorder (SER) report
• Voltage Sag/Swell/Interruption (SSI) report (in Firmware Versions 3 and 4)
Section 13: Testing and Troubleshooting describes:
• General testing philosophy, methods, and tools
• Relay self-tests and troubleshooting
Section 14: Appendices contains the following appendices:
• Appendix A: Firmware Versions
• Appendix C: SEL Distributed Port Switch Protocol
• Appendix D: Configuration, Fast Meter, and Fast Operate Commands
• Appendix E: Compressed ASCII Commands
• Appendix F: Setting Negative-Sequence Overcurrent Elements
• Appendix G: Setting SELOGIC® Control Equations
• Appendix H: Distributed Network Protocol (DNP) V3.00
• Appendix I: MIRRORED BITS™ (in Firmware Versions 1 – 4)
Section 15: SEL-351 Relay Command Summary briefly describes the serial port commands that are described in detail in Section 10: Serial Port Communications and Commands.
APPLICATIONS
HARDWARE CONNECTION FEATURES
See subsection General Specifications later in this section and Section 2: Installation for more information on hardware and connections.
Output Contacts:
If the output contacts are high- current interrupting output contacts, they are polarity dependent. See Table 1.1 for information on SEL-351 Relay models with the high-current interrupting output contact option. See Output Contacts in Section 2: Installation for more information on the polarity dependence of high-current interrupting output contacts.
Channel IN:
For sensitive earth fault (SEF) applications, the SEL-351 Relay should be ordered with channel IN rated at 0.05 A nominal. See item 3 at the bottom of Figures 2.11 and 2.13 for additional reference information.
Delta-Connected Voltages:
Figure 1.2: SEL-351 Relay Inputs, Outputs, and Communications Ports (Model 0351xT)
Channel IN:
For sensitive earth fault (SEF) applications, the SEL- 351 Relay should be ordered with channel IN rated at 0.05 A nominal. See item 3 at the bottom of Figures 2.11 and 2.13 for additional reference information.
Delta-Connected Voltages:
SEL-351 Relays ordered with delta-connected voltage inputs are configured internally as shown below. See Figure 2.8 for an open-delta connection example.
Figure 1.3: SEL-351 Relay Inputs, Outputs, and Communications Ports (Models 0351x0, 0351x1, and 0351xY; Models 0351x1 and 0351xY Have an Extra I/O Board – See Next 2 Figures)
Output Contacts:
If the output contacts are high- current interrupting output contacts, they are polarity dependent. See Table 1.1 for information on SEL-351 Relay models with the high-current interrupting output contact option. See Output Contacts in Section 2: Installation for more information on the polarity dependence of high-current interrupting output contacts.
Figure 1.4: SEL-351 Relay Extra I/O Board (Model 0351xY, Plug-In Connector Version; Main Board Shown in Figure 1.3)
Output Contacts:
If the output contacts are high- current interrupting output contacts, they are polarity dependent. See Table 1.1 for information on SEL-351 Relay models with the high-current interrupting output contact option. See Output Contacts in Section 2: Installation for more information on the polarity dependence of high-current interrupting output contacts.
Figure 1.5: SEL-351 Relay Extra I/O Board (Model 0351x1, Screw-Terminal Block Version; Main Board Shown in Figure 1.3)
COMMUNICATIONS CONNECTIONS
See Port Connector and Communications Cables in Section 10: Serial Port Communications and Commands for more communications connections information.
Figure 1.6: SEL-351 Relay Communications Connections Examples
GENERAL SPECIFICATIONS
Important: Do not use the following specification information to order an SEL-351 Relay. Refer to the actual ordering information sheets.
AC Voltage Inputs
120 VL-N, three-phase four-wire connection. 150 VL-N continuous (connect any voltage up to 150 Vac). 365 Vac for 10 seconds. Burden: 0.13 VA @ 67 V; 0.45 VA @ 120 V.
300 VL-N (or 300 VL-L for delta-connected voltage inputs), continuous (connect any voltage up to 300 Vac). 600 Vac for 10 seconds. Burden: 0.03 VA @ 67 V; 0.06 VA @ 120 V; 0.8 VA @ 300 V.
AC Current Inputs
5 A nominal: 15 A continuous, 500 A for 1 second, linear to 100 A symmetrical. 1250 A for 1 cycle. Burden: 0.27 VA @ 5 A, 2.51 VA @ 15 A.
1 A nominal: 3 A continuous, 100 A for 1 second, linear to 20 A symmetrical. 250 A for 1 cycle. Burden: 0.13 VA @ 1 A, 1.31 VA @ 3 A.
Sensitive Earth Fault: 0.05 A nominal channel IN current input: 1.5 A continuous, 20 A for 1 second, linear to 1.5 A symmetrical. 100 A for 1 cycle. Burden: 0.0004 VA @ 0.05 A, 0.36 VA @ 1.5 A.
Frequency and Rotation
60/50 Hz system frequency and ABC/ACB phase rotation are user-settable. Frequency tracking range: 40.1 - 65 Hz (VA required for frequency tracking).
Output Contacts Standard: Per IEC 255-0-20 : 1974, using the simplified method of assessment
6 A continuous carry 30 A make per IEEE C37.90 : 1989 100 A for one second 270 Vac/360 Vdc MOV for differential surge protection. Pickup/dropout time: < 5 ms Breaking Capacity (L/R = 40 ms):
48 V 0.5 A 10,000 operations 125 V 0.3 A 10,000 operations 250 V 0.2 A 10,000 operations
Cyclic Capacity (L/R = 40 ms): 48 V 0.5 A 2.5 cycles per second
125 V 0.3 A 2.5 cycles per second 250 V 0.2 A 2.5 cycles per second
High-current interruption option: 6 A continuous carry 30 A make per IEEE C37.90 : 1989 330 Vdc MOV for differential surge protection Pickup time: < 5 ms Dropout time: < 8 ms (typical) Breaking Capacity: 10 A 10,000 operations
48 and 125 V (L/R = 40 ms) 250 V (L/R = 20 ms)
Cyclic Capacity: 10 A 4 cycles in 1 second, followed by 2 minutes idle for thermal dissipation
48 and 125 V (L/R = 40 ms) 250 V (L/R = 20 ms)
Note: Do not use high-current interrupting output contacts to switch ac control signals. These outputs are polarity dependent.
Optoisolated Input Ratings
250 Vdc: on for 200 - 300 Vdc; off below 150 Vdc 125 Vdc: on for 105 - 150 Vdc; off below 75 Vdc 110 Vdc: on for 88 - 132 Vdc; off below 66 Vdc 48 Vdc: on for 38.4 - 60 Vdc; off below 28.8 Vdc 24 Vdc: on for 15.0 - 30 Vdc
With nominal control voltage applied, each optoisolated input draws approximately 4 mA of current.
Time-Code Input
Relay accepts demodulated IRIG-B time-code input at Port 2. Relay time is synchronized to within ±5 ms of time-source input.
Serial Communications
One rear-panel and one front-panel EIA-232 serial communications port (Model 0351xT).
Two rear-panel and one front-panel EIA-232 serial communications ports (Models 0351x0, 0351x1, and 0351xY).
One rear-panel EIA-485 serial port with 2100 Vdc of isolation (all models).
Per Port Baud Rate Selections: 300, 1200, 2400, 4800, 9600, 19200, 38400
Power Supply 125/250 V supply 85 - 350 Vdc or 85 - 264 Vac; <15 W 24/48 V supply: 20 - 60 Vdc; <15 W
Dimensions See Figure 2.1.
Weight 13 lbs. (5.92 kg) — 2U rack unit height relay 16 lbs (7.24 kg) — 3U rack unit height relay
Routine Dielectric Test
Current inputs: 2500 Vac for 10 seconds. Power supply, optoisolated inputs, and output contacts: 3000 Vdc for 10 seconds.
The following IEC 255-5 Dielectric Tests : 1977 are performed on all units with the CE mark:
2500 Vac for 10 seconds on analog inputs.
3100 Vdc for 10 seconds on power supply, optoisolated inputs, and output contacts.
Operating Temp.
-40° to 185°F (-40° to +85°C) (type test). (LCD contrast impaired for temperatures below -20°C.)
IEC 68-2-1: 1990 Basic environmental testing procedures, Part 2: Tests - Test Ad: Cold (type test).
IEC 68-2-2: 1974 Basic environmental testing procedures, Part 2: Tests - Test Bd: Dry Heat (type test).
Environment IEC 68-2-30: 1980 Basic environmental testing procedures, Part 2: Tests, Test Db and guidance: Damp heat, cyclic (12 + 12-hour cycle), (six-day type test).
IEC 529: 1989-11 Degrees of Protection Provided by Enclosures - IP30, IP54 from the front panel using the SEL-9103 Front Cover Dust and Splash Protection (type test).
RFI and Interference
Tests
IEEE C37.90.1 - 1989 IEEE SWC Tests for Protective Relays and Relay Systems (3 kV oscillatory, 5 kV fast transient) (type test).
IEEE C37.90.2 IEEE Trial-Use Standard, Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from Transceivers, 10 V/m (type test).
Exceptions:
5.5.2(2) Performed with 200 frequency steps per octave. 5.5.3 Digital Equipment Modulation Test not performed. 5.5.4 Test signal turned off between frequency steps to simulate
keying.
IEC 801-4: 1988 Electromagnetic compatibility for industrial-process measurement and control equipment, Part 4: Electrical fast transient/burst requirements, Severity Level 4 (4 kV on power supply, 2 kV on inputs and outputs) (type test).
IEC 255-22-1: 1988 Electrical disturbance tests for measuring relays and protection equipment, Part 1: 1 MHz burst disturbance tests. Severity Level 3 (2.5 kV common mode, 1.0 kV differential) (type test).
IEC 255-22-3: 1989 Electrical relays, Section 3: Radiated electromagnetic field disturbance tests, Severity Level 3 (10 V/m) (type test).
IEC 255-22-4: 1992 Electrical disturbance tests for measuring relays and protection equipment, Section 4 - Fast transient disturbance test (type test).
Impulse Tests IEC 255-5: 1977 Electrical relays, Part 5: Insulation tests for electrical relays, Section 6: Dielectric Tests, Series C (2500 Vac on analog inputs; 3000 Vdc on power supply, contact inputs, and contact outputs). Section 8: Impulse Voltage Tests, 0.5 Joule 5 kV (type test).
Vibration and Shock Test
IEC 255-21-1: 1988 Electrical relays, Part 21: Vibration, shock, bump, and seismic tests on measuring relays and protection equipment, Section One - Vibration tests (sinusoidal), Class 1 (type test).
IEC 255-21-2: 1988 Electrical relays, Part 21: Vibration, shock, bump, and seismic tests on measuring relays and protection equipment, Section Two - Shock and bump tests, Class 1 (type test).
IEC 255-21-3: 1993 Electrical relays, Part 21: Vibration, shock, bump, and seismic tests on measuring relays and protection equipment, Section Three - Seismic tests, Class 2 (type test).
ESD Test IEC 255-22-2: 1996 Electrical disturbance tests for measuring relays and protective equipment, Section 2: Electrostatic discharge tests, Severity Level 4 (8 kV contact discharge all points except serial ports, 15 kV air discharge to all other points) (type test).
Processing Specifications
AC Voltage and Current Inputs
16 samples per power system cycle, 3 dB low-pass filter cut-off frequency of 560 Hz.
Digital Filtering One cycle cosine after low-pass analog filtering. Net filtering (analog plus digital) rejects dc and all harmonics greater than the fundamental.
Protection and Control
Instantaneous/Definite-Time Overcurrent Elements
Pickup Range: 0.25 - 100.00 A, 0.01 A steps (5 A nominal) 1.00 - 170.00 A, 0.01 A steps (5 A nominal - for phase-to-phase elements)
0.05 - 20.00 A, 0.01 A steps (1 A nominal) 0.20 - 34.00 A, 0.01 A steps (1 A nominal - for phase-to-phase elements)
0.005 - 1.500 A, 0.001 A steps (0.05 A nominal channel IN current input)
Steady-State Pickup Accuracy: ±0.05 A and ±3% of setting (5 A nominal) ±0.01 A and ±3% of setting (1 A nominal) ±1 mA and ±5% of setting (0.05 A nominal channel IN current input)
Transient Overreach: ±5% of pickup
Time Delay: 0.00 - 16,000.00 cycles, 0.25-cycle steps
Timer Accuracy: ±0.25 cycle and ±0.1% of setting
See pickup and reset time curves in Figure 3.5 and Figure 3.6
Time-Overcurrent Elements
Pickup Range: 0.50 - 16.00 A, 0.01 A steps (5 A nominal) 0.10 - 3.20 A, 0.01 A steps (1 A nominal) 0.005 - 0.160 A, 0.001 A steps (0.05 A nominal channel IN current input)
Steady-State Pickup Accuracy: ±0.05 A and ±3% of setting (5 A nominal) ±0.01 A and ±3% of setting (1 A nominal) ±1 mA and ±5% of setting (0.05 A nominal channel IN current input)
Time Dial Range: 0.50- 15.00, 0.01 steps (US) 0.05 - 1.00, 0.01 steps (IEC)
Curve Timing Accuracy: ±1.50 cycles and ±4% of curve time for current between 2 and 30 multiples of pickup
Under- and Overvoltage Elements
Pickup Ranges: 0.00 - 150.00 V, 0.01 V steps (various elements) {150 V voltage inputs} 0.00 - 300.00 V, 0.01 V steps (various elements) {300V voltage inputs} 0.00 - 260.00 V, 0.01 V steps (phase-to-phase elements) {150 V voltage inputs} 0.00 - 520.00 V, 0.01 V steps (phase-to-phase elements) {300 V voltage inputs}
Steady-State Pickup Accuracy: ±1 V and ±5% of setting {150 V voltage inputs} ±2 V and ±5% of setting {300 V voltage inputs}
Transient Overreach: ±5% of pickup
Synchronism-Check Elements
Slip Frequency Pickup Range: 0.005 - 0.500 Hz, 0.001 Hz steps
Slip Frequency Pickup Accuracy: ±0.003 Hz
Phase Angle Range: 0 - 80°, 1° steps
Phase Angle Accuracy: ±4°
Under- and Overfrequency Elements
Steady-State plus Transient Overshoot: ±0.01 Hz
Time Delay: 2.00 - 16,000.00 cycles, 0.25-cycle steps
Timer Accuracy: ±0.25 cycle and ±0.1% of setting
Timers
Pickup Ranges: 0.00 - 999,999.00 cycles, 0.25-cycle steps (reclosing relay and some programmable timers)
0.00 - 16,000.00 cycles, 0.25-cycle steps (some programmable and other various timers)
Pickup and dropout accuracy for all timers: ±0.25 cycle and ±0.1% of setting
Substation Battery Voltage Monitor
Pickup Accuracy: ±2% of setting
Metering Accuracy
Accuracies are specified at 20°C and at nominal system frequency unless noted otherwise.
Voltages VA, VB, VC, VS, 3V0, V1, V2
VAB, VBC, VCA, VS, V1, V2
±0.1% (33.5 - 150 V; wye-connected) {150 V voltage inputs} ±0.2% (67.0 - 300 V; wye-connected) {300 V voltage inputs} ±0.3% (33.5 - 260 V; delta-connected) {150 V voltage inputs}
Currents IA, IB, IC ±1 mA and ±0.1% (0.5 - 10 A) (5 A nominal) ±0.2 mA and ±0.1% (0.1 - 2 A) (1 A nominal) Temperature coefficient:
[(0.0002%)/(°C)2] * (__°C - 20°C)2
(see example below)
Currents IN, I1, 3I0, 3I2 ±0.05 A and ±3% (0.5 - 100 A) (5 A nominal) ±0.01 A and ±3% (0.1 - 20 A) (1 A nominal) ±1 mA and ±5% (0.01 - 1.5 A) (0.05 A nominal channel IN current input)
Phase Angle Accuracy ±0.5°
MW / MVAR (A, B, C, and 3-phase; 5 A nominal; wye-connected voltages)
Accuracy (MW / MVAR) at load angle
for 0.5 A s ≤ phase current < 1.0 A s:
0.70% / - 0° or 180° (unity power factor)
0.75% / 6.50% ±8° or ±172°
1.00% / 2.00% ±30° or ±150°
1.50% / 1.50% ±45° or ±135°
2.00% / 1.00% ±60° or ±120°
6.50% / 0.75% ±82° or ±98°
- / 0.70% ±90° (power factor = 0)
for phase current ≥ 1.0 A s:
0.35% / - 0° or 180° (unity power factor)
0.40% / 6.00% ±8 or ±172°
0.75% / 1.50% ±30° or 150°
1.00% / 1.00% ±45° or ±135°
1.50% / 0.75% ±60° or ±120°
6.00% / 0.40% 82° or ±98°
- / 0.35% ±90° (power factor = 0)
Metering accuracy calculation example for currents IA, IB, and IC due to preceding stated temperature coefficient:
For temperature of 40°C, the additional error for currents IA, IB, and IC is:
[(0.0002%)/(°C)2] • (40°C - 20°C)2 = 0.08%
Power Element Accuracy
Pickup: ±0.005 A • (voltage secondary) and ±5% of setting at unity power factor {1 A nom} ±0.025 A • (voltage secondary) and ±5% of setting at unity power factor {5 A nom}
TABLE OF CONTENTS
Required Equipment and General Connection Information..................................................2-7 Models 0351xT and 0351xY (Plug-In Connectors).....................................................2-7
Circuit Board Connections......................................................................................................2-25 Accessing the Relay Circuit Boards.................................................................................2-25 Output Contact Jumpers..................................................................................................2-30 “Extra Alarm” Output Contact Control Jumper ...............................................................2-30
Password and Breaker Jumpers .......................................................................................2-32 EIA-232 Serial Port Voltage Jumpers ..............................................................................2-33 Clock Battery..................................................................................................................2-33
(Model 0351xT) .......................................................................................................2-31 Table 2.5: Required Position of Jumper JMP23 for Desired Output Contact OUT107 Operation
(Models 0351x0, 0351x1, and 0351xY)....................................................................2-31 Table 2.6: Password and Breaker Jumper Positions for Standard Relay Shipments ..............................2-32 Table 2.7: Password and Breaker Jumper Operation ...........................................................................2-32 Table 2.8: EIA-232 Serial Port Voltage Jumper Positions for Standard Relay Shipments.....................2-33
FIGURES Figure 2.1: SEL-351 Relay Dimensions, Panel Cutout, and Drill Plan...................................................2-1 Figure 2.2: SEL-351 Relay Front- and Rear-Panel Drawings (Model 0351xT)......................................2-3 Figure 2.3: SEL-351 Relay Front- and Rear-Panel Drawings (Model 0351x0) ......................................2-4 Figure 2.4: SEL-351 Relay Front- and Rear-Panel Drawings – Model 0351x1 Rear and Models
0351x1 and 0351xY Front (Horizontal) ......................................................................2-5 Figure 2.5: SEL-351 Relay Front- and Rear-Panel Drawings – Model 0351xY Rear and Models
Distribution Feeder (Includes Fast Bus Trip Scheme) ................................................2-17 Figure 2.8: SEL-351 Relay Provides Overcurrent Protection for a Distribution Bus (Includes Fast
Bus Trip Scheme; Delta-Connected Voltage Inputs Shown).......................................2-18 Figure 2.9: SEL-351 Relay Provides Directional Overcurrent Protection and Reclosing for a
Transmission Line ....................................................................................................2-19 Figure 2.10: SEL-351 Relay Provides Directional Overcurrent Protection and Reclosing for a
Tertiary Winding ......................................................................................................2-22 Figure 2.13: SEL-351 Relay Provides Overcurrent Protection for an Industrial Distribution Feeder
(Core-Balance Current Transformer Connected to Channel IN) .................................2-23 Figure 2.14: SEL-351 Relay Provides Dedicated Breaker Failure Protection .......................................2-24 Figure 2.15: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Main
Board (Model 0351xT).............................................................................................2-26 Figure 2.16: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Main
Board (Models 0351x0, 0351x1, and 0351xY)..........................................................2-27 Figure 2.17: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Extra
I/O Board (Models 0351xY, Plug-In Connector Version) ..........................................2-28
Figure 2.18: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Extra I/O Board (Model 0351x1, Screw-Terminal Block Version) ......................................2-29
SECTION 2: INSTALLATION
Figure 2.1: SEL-351 Relay Dimensions, Panel Cutout, and Drill Plan
2-2 Installation Date Code 20001006 SEL-351 Instruction Manual
Figure 2.1 gives the SEL-351 Relay dimensions for rack-mount and panel-mount models.
For panel-mount models, the 7/32" (5.6 mm) drill holes shown in the Figure 2.1 panel cutout are to accommodate the four integral #10-32 studs that project out the back of the front panel of the panel-mount relays. These studs are used to fasten the panel-mount relays to the greater panel surface, which has been drilled and cut according to Figure 2.1 specifications. The panel-mount relays slide in from the front and are fastened (via the integral studs) on the back.
The rack-mount and panel-mount dimensions are identical except the front panel dimensions on the panel-mount version are larger to hide any panel cuts.
REAR-PANEL CONNECTION DIAGRAMS
Figure 2.2 through Figure 2.5 represent examples of different relay configurations. All 3U rack height units can be ordered with terminal block, plug-in connectors, or extra I/O. All 2U rack height units can be equipped with terminal blocks or plug-in connectors. For model options, view the SEL-351 Model Options Table on our web site, or contact your local SEL sales representative.
REAR-PANEL CONNECTION DIAGRAMS
Figure 2.2: SEL-351 Relay Front- and Rear-Panel Drawings (Model 0351xT)
Figure 2.3: SEL-351 Relay Front- and Rear-Panel Drawings (Model 0351x0)
Date Code 20001006 Installation 2-5 SEL-351 Instruction Manual
Figure 2.4: SEL-351 Relay Front- and Rear-Panel Drawings – Model 0351x1 Rear and Models 0351x1 and 0351xY Front (Horizontal)
Figure 2.5: SEL-351 Relay Front- and Rear-Panel Drawings – Model 0351xY Rear and Models 0351x1 and 0351xY Front (Vertical)
MAKING REAR-PANEL CONNECTIONS
Refer to Figure 2.7 through Figure 2.14 for wiring examples of typical applications.
Refer to Table 1.1 and Figure 2.2 through Figure 2.5. Notice the two types of rear-panel hardware connections. Reference is made to the model numbers in discussing rear-panel connection differences in the following text.
Improvements in Connectorized® SEL-351 Relays (Plug-In Connectors) Result in Part Number Changes
The current transformer shorting connector (for current channel inputs IA, IB, IC, and IN) has been made more robust. This improvement makes the new connector design incompatible with the old design. Thus, presently constructed Connectorized SEL-351 Relays with this improved connector have a new part number (partial part numbers shown; see also Table 1.1 in Section 1: Introduction and Specifications):
old new 0351xM → 0351xT
0351xJ → 0351xY
The respective wiring harness part numbers for these old and new Connectorized SEL-351 Relays are (partial part numbers shown):
old new WA0351xM → WA0351xT
WA0351xJ → WA0351xY
The other connectors on the Connectorized SEL-351 Relay rear panel (power input, voltage inputs, output contacts, etc.) are the same for the old or new models. Only the current transformer shorting connector has changed.
Figure 2.2 and Figure 2.5 show the rear panels for new models 0351xT and 0351xY, respectively. These figures can also be used as a reference for old models 0351xM and 0351xJ, respectively. All terminal labeling/numbering remains the same.
Required Equipment and General Connection Information
Models 0351xT and 0351xY (Plug-In Connectors)
Tools: small slotted-tip screwdriver, wire strippers
Parts: SEL-WA0351xT or SEL-WA0351xY Wiring Harness
Wiring Harness
The SEL-WA0351xT and SEL-WA0351xY Wiring Harnesses include all connectors necessary for relay installation. All connectors requiring special termination come prewired from the factory. Refer to the SEL-WA0351xT or SEL-WA0351xY Model Option Tables, which are available from the factory.
The SEL-WA0351xT Wiring Harness includes the following connectors (not prewired):
• (5) 8-position female plug-in connectors for output contacts OUT1 through ALARM and optoisolated inputs IN1 through IN8.
• (1) 5-position female plug-in connector for Serial Port 1 (EIA-485).
The SEL-WA0351xY Wiring Harness includes the following connectors (not prewired):
• (2) 8-position female plug-in connectors for output contacts OUT101 through ALARM.
• (2) 6-position female plug-in connectors for optoisolated inputs IN101 through IN106.
• (1) 8-position female plug-in connectors for EIA-485/IRIG-B Serial Port 1.
• (4) 6-position female plug-in connectors for output contacts OUT201 through OUT212.
• (2) 8-position female plug-in connectors for optoisolated inputs IN201 through IN208.
These connectors accept wire size AWG 24 to 12. Strip the wires 0.31 inches (8 mm) and install with a small slotted-tip screwdriver. Secure each 8-position connector to the relay chassis with the screws located on either end of the connector. The 8-position connectors are coded at the factory to prevent swapping connectors during installation. Refer to Figure 2.6 for the standard input/output connector coding.
Both wiring harnesses include the following prewired connectors:
• (1) ct shorting connector for current inputs IA, IB, IC, and IN.
• (1) connector for voltage inputs VA, VB, VC, and VS.
• (1) connector for POWER inputs (+ and -).
• (1) spade connector for GROUND connection (chassis ground).
These prewired connectors (and the serial port connector) are unique and may only be installed in one orientation.
Figure 2.6: SEL-351 Relay Plug-In Connector Coding (Top View; Models 0351xT and 0351xY)
Models 0351x0 and 0351x1 (Screw-Terminal Blocks)
Tools: Phillips or slotted-tip screwdriver
Parts: All screws are size #6-32. Locking screws can be requested from the factory.
Chassis Ground
Models 0351xT and 0351xY
Ground the relay chassis at terminal Z17 or Z27with the spade connector provided in the previously discussed wiring harness (tab size 0.250 inches x 0.032 inches). If the tab on the chassis is removed, the chassis ground connection can be made with the size #6-32 screw.
Models 0351x0 and 0351x1
Power Supply
The power supply wiring harness includes a 2-position connector and factory-installed wire. Note the polarity indicators on terminals Z15 (+) and Z16 (-), or Z25(+) and Z26(-). Control power passes through these terminals to a fuse and to the switching power supply. The control power circuitry is isolated from the relay chassis ground.
Plug the power supply connector into terminals Z15 and Z16, or Z25 and Z26. The connector locks in place upon insertion.
Refer to Section 1: Introduction and Specifications for power supply ratings. The relay power supply rating is listed on the serial number sticker on the relay rear panel.
Connect control voltage to the POWER terminals. Note the polarity indicators on terminals Z25 (+) and Z26 (-). Control power passes through these terminals to a fuse and to the switching power supply. The control power circuitry is isolated from the relay chassis ground.
Refer to Section 1: Introduction and Specifications for power supply ratings. The relay power supply rating is listed on the serial number sticker on the relay rear panel.
Output Contacts
Model 0351xT
Model 0351xT can be ordered with standard or high-current interrupting output contacts (all of one type or the other). Refer to General Specifications in Section 1: Introduction and Specifications for output contact ratings. To determine the type of output contacts in your Model 0351xT relay, refer to the part number on the serial number sticker on the relay rear panel.
Standard Output Contacts
Model 0351xT part numbers with a numeral “1” in the field underlined below (sample part number) indicate standard output contacts:
0351xT42533141
High-Current Interrupting Output Contacts
Model 0351xT part numbers with a numeral “2” in the field underlined below (sample part number) indicate high-current interrupting output contacts:
High-current interrupting output contacts are polarity dependent. Note the “+” polarity markings above even-numbered terminals A02, A04, A06, ...., A24 in Figure 2.2. Even if the Model 0351xT relay is ordered with standard output contacts (not polarity dependent), the “+” polarity markings still appear above these terminals (same rear panel is used for both the standard output contact and high-current interrupting output contact Model 0351xT relays).
As an example, consider the connection of terminals A01 and A02 (high-current interrupting output contact OUT1) in a circuit:
Terminal A02 (+) has to be at a higher voltage potential than terminal A01 in the circuit.
The same holds true for output contacts OUT2 through OUT11 and ALARM (if they are also high-current interrupting output contacts).
Note: Do not use the high-current interrupting output contacts to switch ac control signals.
Model 0351x0
Model 0351x0 can be ordered with standard output contacts only. Refer to General Specifications in Section 1: Introduction and Specifications for output contact ratings.
Standard output contacts are not polarity dependent.
Models 0351x1 and 0351xY
Models 0351x1 and 0351xY have output contacts on the:
main board OUT101 through ALARM (ordered as standard output contacts only)
extra I/O board OUT201 through OUT212 [ordered as standard or high-current interrupting output contacts (all of one type or the other)]
Refer to General Specifications in Section 1: Introduction and Specifications for output contact ratings. To determine the type of output contacts on the extra I/O board of your Model 0351x1 relay, refer to the part number on the serial number sticker on the relay rear panel.
Standard Output Contacts
Models 0351x1 and 0351xY part numbers with a numeral “2” in the field underlined below (sample part numbers) indicate standard output contacts on the extra I/O board (OUT201 through OUT212):
0351x1H42542X1 0351xYH42542X1
High-Current Interrupting Output Contacts
Models 0351x1 and 0351xY part numbers with a numeral “6” in the field underlined below (sample part numbers) indicate high-current interrupting output contacts on the extra I/O board (OUT201 through OUT212):
0351x1H42546X1 0351xYH42546X1
High-current interrupting output contacts are polarity dependent. Note the “+” polarity markings above even-numbered terminals B02, B04, B06, ..., B24 in Figure 2.5. The extra I/O board of the Model 0351x1 relay in Figure 2.4 does not show these “+” polarity markings (because it is the rear panel for an extra I/O board with standard output contacts).
As an example, consider the connection of terminals B01 and B02 (high-current interrupting output contact OUT201) in a circuit:
Terminal B02 (+) has to be at a higher voltage potential than terminal B01 in the circuit.
The same holds true for output contacts OUT202 through OUT212 (if they are also high- current interrupting output contacts).
Note: Do not use the high-current interrupting output contacts to switch ac control signals.
Optoisolated Inputs
The optoisolated inputs in any of the SEL-351 Relay models (e.g., IN5, IN102, IN207) are not polarity dependent. With nominal control voltage applied, each optoisolated input draws approximately 4 mA of current. Refer to General Specifications in Section 1: Introduction and Specifications for optoisolated input ratings.
Refer to the serial number sticker on the relay rear panel for the optoisolated input voltage rating (listed under label: LOGIC INPUT).
Current Transformer Inputs
The wiring harness includes a prewired 8-position ct shorting connector. Note the polarity dots above terminals Z01, Z03, Z05, and Z07. Refer to Figure 2.7 through Figure 2.14 for typical ct wiring examples.
Plug the ct shorting connector into terminals Z01 through Z08. Secure the connector to the relay chassis with the two screws located on either end of the connector. When removing the ct shorting connector, pull it straight out away from the rear panel. With the ct shorting connector removed from the rear panel, internal mechanisms in the connector separately short out each individual power system current transformer.
The connector accepts wire size AWG 16 to 10. A special tool is used to attach the wire to the connector at the factory.
Refer to the serial number sticker on the relay rear panel for the nominal current ratings (5 A or 1 A) for the phase (IA, IB, IC) and neutral (IN) current inputs (listed under label: AMPS AC). The neutral (IN) current input also has a 0.05 A nominal current option.
Note the polarity dots above terminals Z01, Z03, Z05, and Z07. Refer to Figure 2.7 through Figure 2.14 for typical ct wiring examples.
Refer to the serial number sticker on the relay rear panel for the nominal current ratings (5 A or 1 A) for the phase (IA, IB, IC) and neutral (IN) current inputs (listed under label: AMPS AC). The neutral (IN) current input also has a 0.05 A nominal current option.
Potential Transformer Inputs
The pt wiring harness includes a prewired 6-position connector. Plug the connector into terminals Z09 through Z14. The connector is keyed uniquely and locks in place upon insertion.
Note the signal labels (VA, VB, VC, N, VS, NS) on terminals Z09 through Z14. Figures 1.2 and 1.3 show the internal connection (wye or delta) for terminals VA, VB, VC, and N. Note also that VS/NS is a separate single-phase voltage input.
Wye-Connected Voltages
Any of the single-phase voltage inputs (i.e., VA-N, VB-N, VC-N, or VS-NS) can be connected to voltages up to 150 V (or 300 V; see Table 1.2) continuous. Figure 2.7 and Figure 2.9 through Figure 2.12 show examples of wye-connected voltages. Frequency is determined from the voltages connected to terminals VA-N and VS-NS (see subsections Synchronism Check Elements and Frequency Elements in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements).
Models 0351xT and 0351xY part numbers with a numeral “2” or “5” in the field underlined below (sample part numbers) indicate wye-connected voltage inputs:
0351xT425331411 0351xYH42542X1 0351xT455331411 0351xYH45542X1
Delta-Connected Voltages
Phase-to-phase voltage (up to 300 V continuous) can be connected to voltage inputs VA-VB, VB- VC, or VC-VA. Figure 2.8 shows an example of open-delta connected potential transformers connected to voltage inputs VA, VB, and VC. No connections are made to terminal N. Frequency is determined from the voltages connected to terminals VA-VB and VS-NS (see subsections Synchronism Check Elements and Frequency Elements in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements).
Models 0351xT and 0351xY part numbers with a numeral “3” in the field underlined below (sample part numbers) indicate delta-connected voltage inputs:
0351xT435331411 0351xYH43542X1
Note the signal labels (VA, VB, VC, N, VS, NS) on terminals Z09 through Z14. Figure 1.3 shows the internal connection (wye or delta) for terminals VA, VB, VC, and N. Note also that VS/NS is a separate single-phase voltage input.
Wye-Connected Voltages
Any of the single-phase voltage inputs (i.e., VA-N, VB-N, VC-N, or VS-NS) can be connected to voltages up to 150 V (or 300 V; see Table 1.2) continuous. Figure 2.7 and Figure 2.9 through Figure 2.12 show examples of wye-connected voltages. Frequency is determined from the voltages connected to terminals VA-N and VS-NS (see subsections Synchronism Check Elements and Frequency Elements in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements). Model 0351x0 or 0351x1 part numbers with a numeral “2” or “5” in the field underlined below (model 0351x0 sample part number shown) indicate wye-connected voltage inputs:
0351x0H42542X1 0351x0H45542X1
Delta-Connected Voltages
Phase-to-phase voltage (up to 300 V continuous) can be connected to voltage inputs VA-VB, VB- VC, or VC-VA. Figure 2.8 shows an example of open-delta connected potential transformers connected to voltage inputs VA, VB, and VC. No connections are made to terminal N. Frequency is determined from the voltages connected to terminals VA-VB and VS-NS (see subsections Synchronism Check Elements and Frequency Elements in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements).
Model 0351x0 or 0351x1 part numbers with a numeral “3” in the field underlined below (model 0351x0 sample part number shown) indicate delta-connected voltage inputs:
0351x0H43542X1
Serial Ports
Refer to Table 10.1 for information on the serial ports available on the different SEL-351 Relay models. All ports are independent - you can communicate to any combination simultaneously.
Serial Port 1 on all the SEL-351 Relay models is an EIA-485 port (4-wire). The Serial Port 1 plug-in connector accepts wire size AWG 24 to 12. Strip the wires 0.31 inches (8 mm) and install with a small slotted-tip screwdriver. For models 0351x0, 0351x1, and 0351xY, the Serial Port 1 connector has extra positions for IRIG-B time-code signal input (see Table 10.3; see following discussion on IRIG-B time code input).
All EIA-232 ports accept 9-pin D-subminiature male connectors. Port 2 on all the SEL-351 Relay models includes the IRIG-B time-code signal input (see Table 10.2; see following discussion on IRIG-B time code input).
The pin definitions for all the ports are given on the relay rear panel and detailed in Table 10.2 through Table 10.4 in Section 10: Serial Port Communications and Commands.
Refer to Table 2.1 for a list of cables available from SEL for various communication applications. Refer to Section 10: Serial Port Communications and Commands for detailed cable diagrams for selected cables (cable diagrams precede Table 10.4).
Note: Listing of devices not manufactured by SEL in Table 2.1 is for the convenience of our customers. SEL does not specifically endorse or recommend such products, nor does SEL guarantee proper operation of those products, or the correctness of connections, over which SEL has no control.
For example, to connect any EIA-232 port to the 9-pin male connector on a laptop computer, order cable number C234A and specify the length needed (standard length is eight feet). To connect the SEL-351 Relay Port 2 to the SEL-2020 Communications Processor that supplies the communication link and the IRIG-B time synchronization signal, order cable number C273A. For connecting devices at distances over 100 feet, SEL offers fiber-optic transceivers. The SEL-2800 family of transceivers provides fiber-optic links between devices for electrical isolation and long distance signal transmission. Contact SEL for further information on these products.
Table 2.1: Communication Cables to Connect the SEL-351 Relay to Other Devices
SEL-351 EIA-232 Serial Ports
Connect to Device (gender refers to the device) SEL Cable No.
all EIA-232 ports PC, 25-Pin Male (DTE) C227A
all EIA-232 ports Laptop PC, 9-Pin Male (DTE) C234A
all EIA-232 ports SEL-2020/2030/2100 without IRIG-B C272A
2 SEL-2020/2030/2100 with IRIG-B C273A
all EIA-232 ports SEL-PRTU C231
all EIA-232 ports SEL-DTA2 C272A
2* 3*
all EIA-232 ports Standard Modem, 25-Pin Female (DCE) C222
all EIA-232 ports RFL-9660 C245A
* A corresponding main board jumper must be installed to power the Telenetics Modem with +5 Vdc (0.5 A limit) from the SEL-351 Relay. See Figure 2.15 and Figure 2.16 and Table 2.8.
IRIG-B Time-Code Input
The SEL-351 Relay accepts a demodulated IRIG-B time signal to synchronize the relay internal clock with some external source. The demodulated IRIG-B time signal can come via the SEL-2020 or SEL-2030 Communications Processors, or the SEL-2100 Protection Logic Processor listed in Table 2.1.
A demodulated IRIG-B time code can be input into Serial Port 2 on any of the SEL-351 Relay models (see Table 10.2). This is handled adeptly by connecting Serial Port 2 of the SEL-351 Relay to an SEL-2020, SEL-2030, or SEL-2100 with Cable C273A.
A demodulated IRIG-B time code can be input into the connector for Serial Port 1 on models 0351x0, 0351x1, and 0351xY (see Table 10.3). If demodulated IRIG-B time code is input into this connector, it should not be input into Serial Port 2 and vice versa.
(MODEL 0351XT EXAMPLE)
1. For line recloser control installations (see bottom of Figure 1.1), an SEL-351 Relay is connected much like this example.
2. The voltage inputs do not need to be connected. Voltage is needed for voltage elements, synchronism check elements, frequency elements, voltage-polarized directional elements, fault location, metering (i.e., voltage, MW, MVAR), and frequency tracking. Voltage Channel VS is used only in voltage and synchronism check elements and voltage metering.
3. Current Channel IN does not need to be connected. Channel IN provides current IN for the neutral ground overcurrent elements. Separate from Channel IN, the residual ground overcurrent elements operate from the internally derived residual current IG (IG = 3I0 = IA + IB + IC). But in this residual connection example, the neutral ground and residual ground overcurrent elements operate the same because IN = IG.
Figure 2.7: SEL-351 Relay Provides Overcurrent Protection and Reclosing for a Utility Distribution Feeder (Includes Fast Bus Trip Scheme)
1. The fast bus trip scheme is often referred to as a reverse-interlocking or zone-interlocking scheme.
2. The voltage inputs do not need to be connected. Voltage is needed for voltage elements, synchronism check elements, frequency elements, voltage-polarized directional elements, fault location, metering (i.e., voltage, MW, MVAR), and frequency tracking. Voltage Channel VS is used only in voltage and synchronism check elements and voltage metering. In this example, the voltage across terminals VB-VC is synchronism-checked with the voltage across terminals VS-NS.
4. Although automatic reclosing is probably not needed in this example, output contact OUT2 can close the circuit breaker via initiation from various means (serial port communications, optoisolated input assertion, etc.), with desired supervision (e.g., synchronism check).
Figure 2.8: SEL-351 Relay Provides Overcurrent Protection for a Distribution Bus (Includes Fast Bus Trip Scheme; Delta-Connected Voltage Inputs Shown)
1. Voltage Channel VS does not need to be connected. It is used only in voltage and synchronism check elements and voltage metering.
Figure 2.9: SEL-351 Relay Provides Directional Overcurrent Protection and Reclosing for a Transmission Line
1. Voltage Channel VS does not need to be connected. It is used only in voltage and synchronism check elements and voltage metering.
2. In this example, current Channel IN provides current polarization for a directional element used to control ground overcurrent elements. Separate from Channel IN, the residual ground overcurrent elements operate from the internally derived residual current IG (IG = 3I0 = IA + IB + IC).
Figure 2.10: SEL-351 Relay Provides Directional Overcurrent Protection and Reclosing for a Transmission Line (Current-Polarization Source Connected to Channel IN)
1. The voltage inputs do not need to be connected. Voltage is needed for voltage elements, synchronism check elements, frequency elements, voltage-polarized directional elements, fault location, metering (i.e., voltage, MW, MVAR), and frequency tracking.
2. Although automatic reclosing is probably not needed in this example, output contact OUT2 can close the circuit breaker via initiation from various means (serial port communications, optoisolated input assertion, etc.), with desired supervision (e.g., hot bus check).
3. For sensitive earth fault (SEF) applications, the SEL-351 Relay should be ordered with channel IN rated at 0.05 A nominal. See current input specifications in the General Specifications subsection in Section 1: Introduction and Specifications. See neutral ground overcurrent element pickup specifications in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements.
Figure 2.11: SEL-351 Relay Provides Overcurrent Protection for a Delta-Wye Transformer Bank
1. The voltage inputs do not need to be connected. Voltage is needed for voltage elements, synchronism check elements, frequency elements, voltage-polarized directional elements, fault location, metering (i.e., voltage, MW, MVAR), and frequency tracking.
2. Although automatic reclosing is probably not needed in this example, output contact OUT2 can close the circuit breaker via initiation from various means (serial port communications, optoisolated input assertion, etc.), with desired supervision (e.g., hot bus check).
Figure 2.12: SEL-351 Relay Provides Overcurrent Protection for a Transformer Bank With a Tertiary Winding
1. A core-balance current transformer is often referred to as a zero-sequence, ground fault, or window current transformer.
2. Although automatic reclosing is probably not needed in this example, output contact OUT2 can close the circuit breaker via initiation from various means (serial port communications, optoisolated input assertion, etc.), with desired supervision.
3. For sensitive earth fault (SEF) applications, the SEL-351 Relay should be ordered with channel IN rated at 0.05 A nominal. See current input specifications in the General Specifications subsection in Section 1: Introduction and Specifications. See neutral ground overcurrent element pickup specifications in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements.
Figure 2.13: SEL-351 Relay Provides Overcurrent Protection for an Industrial Distribution Feeder (Core-Balance Current Transformer Connected to Channel IN)
Current Channel IN does not need to be connected. Channel IN provides current IN for the neutral ground overcurrent elements. Separate from Channel IN, the residual ground overcurrent elements operate from the internally derived residual current IG (IG = 3I0 = IA + IB + IC). But in this residual connection example, the neutral ground and residual ground overcurrent elements operate the same because IN = IG.
Figure 2.14: SEL-351 Relay Provides Dedicated Breaker Failure Protection
CIRCUIT BOARD CONNECTIONS
Accessing the Relay Circuit Boards
To change circuit board jumpers or replace the clock battery on the relay main board, refer to Figure 2.15 through Figure 2.18 and take the following steps:
1. Deenergize the relay. On Connectorized versions this can be easily accomplished by removing the connector at rear-panel terminals Z15 and Z16 or Z25 and Z26
2. Remove any cables connected to serial ports on the front and rear panels.
3. Loosen the six front-panel screws (they remain attached to the front panel), and remove the relay front panel.
CAUTION! The relay contains devices sensitive to Electrostatic Discharge (ESD). When working on the relay with front or top cover removed, work surfaces and personnel must be properly grounded or equipment damage may result.
4. Each circuit board corresponds to a row of rear-panel terminal blocks or connectors and is affixed to a drawout tray. Identify which drawout tray needs to be removed. SEL-351 Relay models 0351x0 and 0351xT have only a main board. Models 0351x1 and 0351xY have an extra I/O board below the main board.
5. On Connectorized versions, remove the rear-panel connectors that correspond to the circuit board you wish to remove by loosening the screws on either end of each connector. Removal of the extra I/O board also requires removal of the main board (because the LCD on the main board is in the way).
6. Disconnect circuit board cables as necessary to allow the desired board and drawout tray to be removed. Removal of the extra I/O board requires removal of the main board first. Ribbon cables can me removed by pushing the extraction ears away from the connector. The 6-conductor power cable can be removed by grasping the power connector wires and pulling away from the circuit board.
7. Grasp the drawout assembly of the board and pull the assembly from the relay chassis.
8. Locate the jumper(s) or battery to be changed (refer to Figure 2.15 through Figure 2.18). Make the desired changes. Note that the output contact jumpers are soldered in place.
9. When finished, slide the drawout assembly into the relay chassis. Reconnect the cables removed in step 6. Replace the relay front-panel cover.
10. Replace any cables previously connected to serial ports.
11. Replace any rear-panel connectors removed in step 5.
12. Reenergize the relay. On Connectorized versions, replace the power connector at rear-panel terminals Z15 and Z16 or Z25 and Z26.
Figure 2.15: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Main Board (Model 0351xT)
Figure 2.16: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Main Board (Models 0351x0, 0351x1, and 0351xY)
Figure 2.17: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Extra I/O Board (Models 0351xY, Plug-In Connector Version)
Figure 2.18: Jumper, Connector, and Major Component Locations on the SEL-351 Relay Extra I/O Board (Model 0351x1, Screw-Terminal Block Version)
Output Contact Jumpers
Table 2.2 shows the correspondence between output contact jumpers and the output contacts they control. The referenced figures show the exact location and correspondence. With a jumper in the A position, the corresponding output contact is an “a” type output contact. An “a” type output contact is open when the output contact coil is deenergized and closed when the output contact coil is energized. With a jumper in the B position, the corresponding output contact is a “b” type output contact. A “b” type output contact is closed when the output contact coil is deenergized and open when the output contact coil is energized. These jumpers are soldered in place.
In the figures referenced in Table 2.2, note that the ALARM output contacts are “b” type output contacts and the other output contacts are all “a” type output contacts. This is how these jumpers are configured in a standard relay shipment. Refer to corresponding Figure 7.28 through Figure 7.30 for examples of output contact operation for different output contact types.
Output contacts OUT1 through OUT8 are fixed as “a” contacts in the Model 0351xT relay.
Table 2.2: Output Contact Jumpers and Corresponding Output Contacts
SEL-351 Relay Model Number
0351x0, 0351x1, and 0351xY
0351xY JMP17 - JMP20 OUT212 - OUT209 2.17
0351x1 JMP17 - JMP28 OUT212 - OUT201 2.18
“Extra Alarm” Output Contact Control Jumper
All the SEL-351 Relay models have dedicated alarm output contacts (labeled ALARM – see Figure 2.2 through Figure 2.4). Often more than one alarm output contact is needed for such applications as local or remote annunciation, backup schemes, etc. An extra alarm output contact can be had for all the SEL-351 Relay models without the addition of any external hardware.
The output contact next to the dedicated ALARM output contact can be converted to operate as an “extra alarm” output contact by moving a jumper on the main board (see Table 2.3).
Table 2.3: “Extra Alarm” Output Contacts and Corresponding Controlling Jumpers
“Extra Alarm” Output Contact
0351x0, 0351x1, and 0351xY
OUT107 JMP23 2.16, 7.29
The position of the jumper controls the operation of the output contact next to the dedicated ALARM output contact. With the jumper in one position, the output contact operates regularly. With the jumper in the other position, the output contact is driven by the same signal that operates the dedicated ALARM output contact (see Table 2.4 and Table 2.5).
Table 2.4: Required Position of Jumper JMP8 for Desired Output Contact OUT11 Operation (Model 0351xT)
Position Output Contact OUT11 Operation
Regular output contact OUT11 (operated by Relay Word bit OUT11). Jumper JMP8 comes in this position in a standard relay shipment (see Figure 7.28).
“Extra Alarm” output contact (operated by alarm logic/circuitry). Relay Word bit OUT11 does not have any effect on output contact OUT11 when jumper JMP8 is in this position (see Figure 7.28).
Table 2.5: Required Position of Jumper JMP23 for Desired Output Contact OUT107 Operation (Models 0351x0, 0351x1, and 0351xY)
Position Output Contact OUT107 Operation
Regular output contact OUT107 (operated by Relay Word bit OUT107). Jumper JMP23 comes in this position in a standard relay shipment (see Figure 7.29).
“Extra Alarm” output contact (operated by alarm logic/circuitry). Relay Word bit OUT107 does not have any effect on output contact OUT107 when jumper JMP23 is in this position (see Figure 7.29).
If an output contact is operating as an “extra alarm” (driven by the same signal that operates the dedicated ALARM output contact), it will be in the opposite state of the dedicated ALARM output contact in a standard relay shipment. In a standard relay shipment, the dedicated ALARM
output contact comes as a “b” type output contact and all the other output contacts (including the “extra alarm”) come as “a” type output contacts.
The output contact type for any output contact can be changed (see preceding subsection Output Contact Jumpers). Thus, the dedicated ALARM output contact and the “extra alarm” output contact can be configured as the same output contact type if desired (e.g., both can be configured as “b” type output contacts).
Password and Breaker Jumpers
Table 2.6: Password and Breaker Jumper Positions for Standard Relay Shipments
SEL-351 Relay Model
Breaker Jumper/Position (for standard relay
shipments) Reference Figures
0351x0 0351x1 0351xY
Table 2.7: Password and Breaker Jumper Operation
Jumper Type Jumper Position Function
Password ON (in place)
OFF (removed/not in place)
Breaker ON (in place)
OFF (removed/not in place)
disable serial port commands OPEN2, CLOSE2, and PULSE3
1 View or set the passwords with the PASSWORD command (see Section 10: Serial Port Communications and Commands). 2 Also controls Fast Operate Breaker Control Open/Close commands (see Appendix D). 3 The OPEN, CLOSE, and PULSE commands are used primarily to assert output contacts for circuit breaker control or testing purposes (see Section 10: Serial Port Communications and Commands).
Note that JMP2 and JMP6 in respective Figure 2.15 and Figure 2.16 have multiple jumpers A through D. Jumpers A and B are used (see Table 2.6 and Table 2.7). Jumpers C and D are not used. Therefore, the positions (ON or OFF) of jumpers C and D are of no consequence.
EIA-232 Serial Port Voltage Jumpers
The jumpers listed in Table 2.8 connect or disconnect +5 Vdc to Pin 1 on the corresponding EIA-232 serial ports. The +5 Vdc is rated at 0.5 A maximum for each port. See Table 10.2 in Section 10: Serial Port Communications and Commands for EIA-232 serial port pin functions.
In a standard relay shipment, the jumpers are “OFF” (removed/not in place) so that the +5 Vdc is not connected to Pin 1 on the corresponding EIA-232 serial ports. Put the jumpers “ON” (in place) so that the +5 Vdc is connected to Pin 1 on the corresponding EIA-232 serial ports.
Table 2.8: EIA-232 Serial Port Voltage Jumper Positions for Standard Relay Shipments
Reference Figure

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