Schweitzer Engineering Laboratories SEL-311L User manual

SEL-311L
LINE CURRENT DIFFERENTIAL
PROTECTION AND AUTOMATION SYSTEM
INSTRUCTION MANUAL
SCHWEITZER ENGINEERING LABORATORIES
2350 NE HOPKINS COURT
PULLMAN, WA USA 99163-5603
TEL: [phone] FAX: [phone]

!
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.
!
ATTENTION: Le relais contient des pièces
sensibles aux décharges électrostatiques (DES).
Quand on travaille sur le relais avec le panneau
avant ou du dessus enlevé, les surfaces de travail et
le personnel doivent être mis à la terre
convenablement pour éviter les dommages à
l'équipement.
!
CAUTION: There is danger of explosion if the
battery is incorrectly replaced. Replace only with
Ray-O-Vac®no. BR2335 or equivalent
recommended by manufacturer. Dispose of used
batteries according to the manufacturer’s
instructions.
!
ATTENTION: Il y a un danger d’explosion si la
pile électrique n’est pas correctement remplacée.
Utiliser exclusivement Ray-O-Vac®No. BR2335 ou
un équivalent recommandé par le fabricant. Se
débarrasser des piles usagées suivant les
instructions du fabricant.
!
WARNING: This device is shipped with default
passwords. Default passwords should be changed
to private passwords at installation. Failure to
change each default password to a private password
may allow unauthorized access. SEL shall not be
responsible for any damage resulting from
unauthorized access.
!
AVERTISSEMENT: Cet équipement est expédié
avec des mots de passe par défaut. A l'installation,
les mots de passe par défaut devront être changés
pour des mots de passe confidentiels. Dans le cas
contraire, un accès non-autorisé à l'équipement
pourrait être possible. SEL décline toute
responsabilité pour tout dommage résultant de cet
accès non-autorisé.
!
DANGER: Removal of this front panel exposes
circuitry which may cause electrical shock that can
result in injury or death.
!
DANGER:Le retrait du panneau avant expose à la
circuiterie qui pourrait être la source de chocs
électriques pouvant entraîner des blessures ou la
mort.
The software (firmware), schematic drawings, relay commands, and relay messages are copyright protected by the United States Copyright Law and International Treaty
provisions. ll rights are reserved.
You may not copy, alter, disassemble, or reverse-engineer the software. You may not provide the software to any third party.
ll 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, SEL-PROFILE, and are registered trademarks of Schweitzer Engineering Laboratories.
The English language manual is the only approved SEL manual.
Copyright © SEL 2001 ( ll rights reserved) Printed in US .
This product is covered by U.S. Patent Numbers: 5,041,737; 5,208,545; 5,317,472; 5,325,061; 5,349,490; 5,365,396; 5,367,426; 5,479,315; 5,515,227; 5,652,688;
5,694,281; 5,703,745; 5,731,943; 5,790,418; 5,793,750; 5,883,578; 6,028,754: U.S. Patent(s) Pending, and Foreign Patent(s) Granted and Pending.
This product is covered by the standard SEL 10-year warranty. For warranty details, visit www.selinc.com or contact your customer service representative.

Date Code 20011112 Manual Change Information i
SEL-311L 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.
20011112 Section 1:
− Updated Optoisolated Input Ratings information in Relay Specifications.
− Corrected references to figures in Section 3 in Relay Element Settings
Ranges and Accuracies.
Section 2:
− Updated table SEL-311L Relay Line Current Differential Electrical
Interface Cable Application.
Section 3:
− Added OPO Open Pole Option (52,27).
− Corrected ETAP setting indicated in Differential Element Settings and
Specifications.
− Updated the following figures: Phase Differential Element 87LA Processing
for Channel X. B and C Phases and Channel Y Are Similarly Processed;
Negative-Sequence Differential Element 87L2 Processing for Channel X.
Channel Y Processing Similar; and Ground Differential Element 87L2
Processing for Channel X. Channel Y Processing Similar.
Section 6:
− Corrected the ETAP setting indicated in Reclosing Relay Shot Counter.
Section 9:
− Updated ORDER default setting text in the Settings Sheets.
Section 10:
− Corrected names of the transmit bits in Front-Panel LED 87LCH FAIL.
− Updated table EIA- 422 Clock Polarity Settings for Popular
Communications Equipment.

ii Manual Change Information Date Code 20011112
SEL-311L Instruction Manual
Revision
Date Summary of Revisions
Section 14:
− Removed SELOGIC®Control Equations Variable Timers section in the APP
= 87L Settings Sheets.
Appendix A:
− Internal changes to correct local control bits operation.
− Internal changes to correct SELOGIC TR setting for 87L21 application.
− Internal changes to correct counter overflow in INT87 board.
Appendix B:
Added note about the self-extracting Zip file to step 7.
20011017 Added new Appendix K: SEL-5030 ACSELERATOR™.
20010820 Appendix A:
− Internal changes to improve EIA-422 clock detection.
20010717 Appendix A:
− Internal changes to correct unused CT scaling issue.
20010625 New Manual Release.

Date Code 20011112 Table of Contents i
SEL-311L Instruction Manual
SEL-311L INSTRUCTION MANUAL
TABLE OF CONTENTS
SECTION 1: INTRODUCTION AND SPECIFICATIONS
SECTION 2: INSTALLATION
SECTION 3: LINE CURRENT DIFFERENTIAL, DISTANCE, OUT-OF-STEP,
OVERCURRENT, VOLTAGE, AND SYNCHRONISM CHECK
ELEMENTS
SECTION 4: LOSS-OF-POTENTIAL, CCVT TRANSIENT DETECTION,
LOAD-ENCROACHMENT, AND DIRECTIONAL ELEMENT
LOGIC
SECTION 5: TRIP AND TARGET LOGIC
SECTION 6: CLOSE AND RECLOSE LOGIC
SECTION : INPUTS, OUTPUTS, TIMERS, AND OTHER CONTROL LOGIC
SECTION 8: BREAKER MONITOR AND METERING FUNCTIONS
SECTION 9: SETTING THE RELAY
SECTION 10: CURRENT DIFFERENTIAL COMMUNICATIONS AND SERIAL
PORT COMMUNICATIONS AND COMMANDS
SECTION 11: FRONT-PANEL INTERFACE
SECTION 12: STANDARD EVENT REPORTS AND SER
SECTION 13: TESTING, TROUBLESHOOTING, AND COMMISSIONING
SECTION 14: APPLICATION SETTINGS FOR SEL-311L RELAYS
SECTION 15: APPENDICES
Appendix A: Firmware Versions
Appendix B: Firmware Upgrade Instructions
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) 3.00 Level 2
Appendix I: MIRRORED BITS™ Communications
Appendix J: Example Calculations for 8 L Settings
Appendix K: SEL-5030 ACSELERATOR™
SEL-311L RELAY COMMAND SUMMARY

Date Code 20011112 Introduction and Specifications i
SEL-311L Instruction Manual
TABLE OF CONTENTS
SECTION 1: INTRODUCTION AND SPECIFICATIONS......................1-1
SEL-311L Relay Models ..............................................................................................................1-1
Instruction Manual Sections Overview ........................................................................................1-2
Applications..................................................................................................................................1-5
AC/DC Connections .....................................................................................................................1-7
Communications Connections for Control, Configuration, and Interrogation.............................1-9
Relay Specifications ...................................................................................................................1-10
General Specifications ........................................................................................................1-10
Processing Specifications ...................................................................................................1-13
Relay Element Settings Ranges and Accuracies ................................................................1-14
FIGURES
Figure 1.1: Typical Two-Terminal Application With Hot Standby Channel and Tapped Load ............1-5
Figure 1.2: Typical Two-Terminal Application With Voltage Inputs....................................................1-6
Figure 1.3: Typical Three-Terminal Application With Optional Third Communications
Channel ..........................................................................................................................1-6
Figure 1.4: SEL-311L Relay Inputs and Outputs ...................................................................................1-7
Figure 1.5: SEL-311L Relay Communications Interfaces......................................................................1-8
Figure 1.6: SEL-311L Relay Communications Connections Examples.................................................1-9

Date Code 20011112 Introduction and Specifications 1-1
SEL-311L Instruction Manual
SECTION 1: INTRODUCTION AND SPECIFICATIONS
This instruction manual covers the SEL-311L, a digital line current differential relay with
integrated communications interfaces. In addition to line current differential protection, the
SEL-311L Relay contains all the protection, control, and communication features available in the
SEL-311C Relay including distance, directional, and nondirectional overcurrent protection;
under- and overvoltage and frequency protection; and multishot reclosing.
The SEL-311L Relay implements line current differential protection using communications
interfaces, a processor, and contact outputs separate from those used for backup protection and
control. A failure in the line current differential hardware does not impact backup protection.
This section includes the following overviews of the SEL-311L Relay:
SEL-311L Relay Models
Instruction Manual Sections
Applications
AC/DC Connections
Communications Ports
Communications Connections
Relay Specifications
SEL-311L RELAY MODELS
The SEL-311L Relay has the following standard features:
• Screw-terminal blocks
• Wye-connected voltage inputs
• 8 standard output contacts and 6 fast, high-current interrupting output contacts
• 6 optoisolated contact inputs
• 1 EIA-485 port
• 3 EIA-232 ports
• IRIG-B time synchronization
Select between the following ordering options:
• Horizontal rack mount, or horizontal or vertical panel mount
• 1 A or 5 A current transformers
• 125/250 V or 24/48 V power supply
• Five control input voltage selections
In addition, DNP 3.00 Level 2 Slave is available.

1-2 Introduction and Specifications Date Code 20011112
SEL-311L Instruction Manual
Purchase the SEL-311L Relay with one or a combination of two of the following line current
differential channel interfaces:
• Isolated EIA-422
• Isolated G.703 codirectional
• 850 nm Multimode Fiber (IEEE Propose Standard PC37.94)
• 1300 nm Direct Fiber
See the SEL-311L Relay Model Option table (MOT) for available combinations.
When the relay is purchased with two channel interfaces, the second channel can be used as a hot
standby channel or to protect a three-terminal line.
INSTRUCTION MANUAL SECTIONS OVERVIEW
The following is an overview of the other sections in this instruction manual:
Section 2: Installation describes mounting and wiring the SEL-311L Relay, application and
communications connections, and the operation of circuit board jumpers. Figure 2.2 through
Figure 2.5 show the SEL-311L Relay front and rear panels.
Section 3: Line Current Differential, Distance, Out-of-Step, Overcurrent, Voltage,
Synchronism Check, and Frequency Elements describes the operation of:
• Line current differential elements (phase, negative-sequence, and zero-sequence)
• Phase and ground distance elements (phase mho, compensator distance, ground
mho, quadrilateral ground, and Zone 1 extension)
• Out-of-step elements
• Instantaneous/definite-time overcurrent elements (phase, residual ground, and
negative-sequence)
• Time-overcurrent elements (phase, residual ground, and negative-sequence)
• Voltage elements (single-phase, phase-to-phase, etc.)
• Synchronism check elements
• Frequency elements
Section 4: Loss-of-Potential, CCVT Transient Detection, Load-Encroachment, and
Directional Element Logic describes the operation of:
• Loss-of-potential logic and its effect on distance and directional elements
• CCVT transient detection logic and its effect on Zone 1 distance elements
• Load-encroachment logic and its application to phase distance and overcurrent
elements
• Voltage-polarized and current-polarized directional elements
• Best Choice Ground Directional™ logic and automatic settings