FCC ID: R34-SEL-3031R SEL-3031

SEL-3031 Serial Radio Transceiver Instruction Manual 20211103

*PM3031-01*

20142022 by Schweitzer Engineering Laboratories, Inc. All rights reserved. All brand or product names appearing in this document are the trademark or registered trademark of their respective holders. No SEL trademarks may be used without written permission. SEL products appearing in this document may be covered by U.S. and Foreign patents. Schweitzer Engineering Laboratories, Inc. reserves all rights and benefits afforded under federal and international copyright and patent laws in its products, including without limitation software, firmware, and documentation. The information in this document is provided for informational use only and is subject to change without notice. Schweitzer Engineering Laboratories, Inc. has approved only the English language document. This product is covered by the standard SEL 10-year warranty. For warranty details, visit selinc.com or contact PM3031-01 your customer service representative. SEL-3031 Instruction Manual Date Code 20211103 Table of Contents List of Tables .......................................................................................................... iii List of Figures ..........................................................................................................v Preface ..................................................................................................................... vii Section 1: Introduction and Overview Overview ................................................................................................................1.1 Features, Benefits, and Applications......................................................................1.2 Models, Options, and Accessories .........................................................................1.3 Product Diagrams...................................................................................................1.6 Specifications .........................................................................................................1.9 Section 2: Installation Overview ................................................................................................................2.1 Unit Placement and Maintenance Physical Location...........................................2.11 Connections..........................................................................................................2.12 Front-Panel Indicators ..........................................................................................2.15 Communications ..................................................................................................2.16 Section 3: Job Done Examples Overview ................................................................................................................3.1 High-Speed Teleprotection or Control With MIRRORED BITS Communications..........................................................................................3.1 Using an SEL Information Processor to Collect Relay Status and Measurements..............................................................................................3.6 Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol ..............3.10 Configuring Collocated Antennas Using SEL Hop-Sync Technology................3.16 Section 4: Settings and Commands PC Software ...........................................................................................................4.1 Settings ...................................................................................................................4.5 Commands............................................................................................................4.17 Section 5: Performance Monitoring, Testing, and Troubleshooting Overview ................................................................................................................5.1 Monitoring Radio Performance..............................................................................5.1 Self-Test .................................................................................................................5.5 Troubleshooting .....................................................................................................5.6 Date Code 20211103 SEL-3031 Instruction Manual ii Table of Contents Appendix A: Firmware and Manual Versions Firmware............................................................................................................... A.1 Instruction Manual................................................................................................ A.2 Appendix B: Firmware Upgrade Instructions Overview ...............................................................................................................B.1 Technical Support..................................................................................................B.3 Appendix C: SEL-3044 Encryption Card Overview ...............................................................................................................C.1 NIST FIPS 140-2 Level 2 Security Requirements ................................................C.1 Theory of OperationSEL Protocol.....................................................................C.2 SEL-3031 Instruction Manual Date Code 20211103 List of Tables Table 1.1 Table 1.2 Table 2.1 Table 2.2 Table 2.3 Radio Antenna and Cable Accessories .............................................1.4 Certifications by Country................................................................1.12 Fresnel Zone Diameter......................................................................2.3 Antennas Permitted for Use With the SEL-3031..............................2.4 900-MHz Frequency Skip Zones (Part Numbers Starting With 30310)..........................................................................................2.7 Table 2.4 900-MHz Frequency Skip Zones for Brazil (Part Numbers Table 2.5 Table 2.6 Table 2.7 Table 2.8 Starting With 30311) ...................................................................2.7 Length vs. Loss in Coaxial Cables at 900 MHz ...............................2.7 Default Passwords...........................................................................2.14 Password Jumper Position ..............................................................2.15 Communications Cables for Time and Communications Connections ...............................................................................2.15 Front-Panel Status Indicator LEDs .................................................2.16 Table 2.9 Table 2.10 SEL-3031 Port Description.............................................................2.16 Table 2.11 SEL-3031 Port Description.............................................................2.18 Firmware Revision History..............................................................A.1 Table A.1 Instruction Manual Revision History...............................................A.3 Table A.2 Date Code 20211103 SEL-3031 Instruction Manual This page intentionally left blank List of Figures Point-to-Point Product Overview......................................................1.1 Figure 1.1 Figure 1.2 Point-to-Multipoint Product Overview .............................................1.2 Figure 1.3 Radio Antenna Connections .............................................................1.5 SEL-3031 Dimensions ......................................................................1.6 Figure 1.4 SEL-3031 Rack Mount (Front and Rear) .........................................1.7 Figure 1.5 SEL-3031 Wall Mount (Front and Rear) ..........................................1.8 Figure 1.6 Figure 2.1 Fresnel Zone .....................................................................................2.2 Figure 2.2 Antenna Polarization.........................................................................2.6 Figure 2.3 Collocated Antennas With Two Radio Links ...................................2.9 Figure 2.4 Three Collocated Synchronized Radios..........................................2.10 Figure 2.5 Wall-Mount and Rack-Mount Rear Connections ...........................2.12 SEL-C693 Cable: Two-Wire EIA-485 Connections ......................2.17 Figure 2.6 EIA-232 and EIA-485 DB-9 Connector Pin Numbers ...................2.17 Figure 2.7 SEL-C245A Cable: SEL-3031 to Computer ..................................2.19 Figure 2.8 Figure 2.9 SEL-C285 Cable: SEL-3031 to DTE Device (SEL Relays)...........2.19 Figure 2.10 SEL-C387 Cable: SEL-3031 to SEL Communications Processor With IRIG-B .............................................................2.20 Figure 2.11 SEL-C273A Cable: SEL-3031 Repeater and Synchronizing Cable..........................................................................................2.20 Figure 2.12 SEL-C576 Cable: Synchronizing Cable for SEL-3031 ..................2.21 Figure 2.13 USB Interface .................................................................................2.21 SEL MIRRORED BITS Connection Example......................................3.1 Figure 3.1 SEL-3031 Port Settings for MIRRORED BITS Connection ................3.2 Figure 3.2 SEL-351 Port Settings for MIRRORED BITS Connection ..................3.3 Figure 3.3 SEL-451 Port Settings for MIRRORED BITS Connection ..................3.4 Figure 3.4 SEL-2505 DIP Switch Settings for MIRRORED BITS Connection ....3.5 Figure 3.5 TAR ROKA Command From an SEL-351.......................................3.5 Figure 3.6 SEL-3031 Linking Information Processors to Relays ......................3.6 Figure 3.7 SEL-3031 Port 1 Settings for Fast Messaging..................................3.7 Figure 3.8 Figure 3.9 SEL-351 Port Settings for Fast Messaging.......................................3.8 Figure 3.10 Example AUTO Command Output ..................................................3.9 Figure 3.11 SEL-3031 Point-to-Multipoint Example ........................................3.10 Figure 3.12 Radio Settings for Point-to-Multipoint ...........................................3.11 Figure 3.13 Port 1 Settings for Point-to-Multipoint...........................................3.12 Figure 3.14 SEL-3530 RTAC DNP3 Settings ...................................................3.13 Figure 3.15 SEL-651R Communications Settings for P2MP ............................3.14 Figure 3.16 SEL-651R DNP Port Settings for P2MP ........................................3.15 Figure 3.17 Setting up Collocated Antennas at a Repeater Location.................3.16 Figure 3.18 SYNC Settings for Master Radio....................................................3.18 Date Code 20211103 SEL-3031 Instruction Manual vi List of Figures Figure C.1 SEL-3044 Encryption Card..............................................................C.1 Figure C.2 In-Band Data Packet Format............................................................C.4 Figure C.3 Operation of the AES Encryption Function .....................................C.5 Figure C.4 Encryption Card Location ................................................................C.7 SEL-3031 Instruction Manual Date Code 20211103 Preface Manual Overview The SEL-3031 Serial Radio Transceiver manual includes the information needed to properly install and operate the product. The scope of this manual includes specifications, installation, mechanical information, self-monitoring, and alarming. An overview of each manual section and topics follows. Preface. Describes the manual organization and conventions used to present information. Section 1: Introduction and Overview. Describes the basic features and functions of the SEL-3031, and lists the specifications. Section 2: Installation. Describes how to mount and wire the SEL-3031;

illustrates wiring connections for various applications. Section3: Job Done Examples. Describes common SEL-3031 applications. Appendix A: Firmware and Manual Versions. Details differences between firmware versions. Provides a record of changes made to the manual. Appendix B: Firmware Upgrade Instructions. Provides instructions for upgrading the firmware in the SEL-3031. Appendix C: SEL-3044 Encryption Card. Describes how the encryption card operates to secure wireless data. Provides installation information. Date Code 20211103 SEL-3031 Instruction Manual viii Preface Safety Information Safety Information Dangers, Warnings, and Cautions This manual uses three kinds of hazard statements, defined as follows:

DANGER Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. WARNING Indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury or equipment damage. Safety Symbols The following symbols are often marked on SEL products. CAUTION ATTENTION Refer to accompanying documents. Se reporter la documentation. Earth (ground) Terre Protective earth (ground) Terre de protection Direct current Courant continu Alternating current Courant alternatif Both direct and alternating current Courant continu et alternatif Instruction manual Manuel dinstructions SEL-3031 Instruction Manual Date Code 20211103 Preface Safety Information ix Safety Marks The following statements apply to this device. General Safety Marks For use in Pollution Degree 2 environment. Pour lutilisation dans un environnement de Terminal Ratings Wire Materials Degr de Pollution 2. Spcifications des bornes Type de filage Use copper conductors only. Utiliser seulement conducteurs en Wire Size 1226 AWG Tightening Torque cuivre. Calibre de fil 1226 AWG Couple de serrage Terminal Blocks: 0.8 Nm (7 in-lb) Borniers : 0,8 Nm (7 livres-pouce) Other Safety Marks (Sheet 1 of 2) DANGER DANGER Disconnect or de-energize all external connections before opening this device. Contact with hazardous voltages and currents inside this device can cause electrical shock resulting in injury or death. Dbrancher tous les raccordements externes avant douvrir cet appareil. Tout contact avec des tensions ou courants internes lappareil peut causer un choc lectrique pouvant entraner des blessures ou la mort. WARNING Have only qualified personnel service this equipment. If you are not qualified to service this equipment, you can injure yourself or others, or cause equipment damage. AVERTISSEMENT Seules des personnes qualifies peuvent travailler sur cet appareil. Si vous ntes pas qualifis pour ce travail, vous pourriez vous blesser avec dautres personnes ou endommager lquipement. WARNING Operator safety may be impaired if the device is used in a manner not specified by SEL. AVERTISSEMENT La scurit de loprateur peut tre compromise si lappareil est utilis dune faon non indique par SEL. WARNING Atmospheric electrical charge accumulation can cause potential between the conductor and shield of the feedline, or cause lightning to strike an antenna. A lightning protector should be installed to prevent damage to equipment or injury to personnel. AVERTISSEMENT L'accumulation de charges lectriques de type atmosphrique peut tre la cause d'une diffrence de potentiel entre le conducteur et le blindage de la ligne d'alimentation ou peut attirer la foudre sur l'antenne. Un parafoudre devrait tre install pour prvenir les dommages l'quipement ou les blessures au personnel. Date Code 20211103 SEL-3031 Instruction Manual x Preface Safety Information Other Safety Marks (Sheet 2 of 2) WARNING Do not look into the fiber (laser) ports/connectors. AVERTISSEMENT Ne pas regarder vers lextremit des ports ou connecteurs de fibres pour laser. WARNING AVERTISSEMENT Do not look into the end of an optical cable connected to an optical output. Ne pas regarder vers lextrmit dun cble optique raccord une sortie optique. 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 appareil est expdi avec des mots de passe par dfaut. A linstallation, les mots de passe par dfaut devront tre changs pour des mots de passe confidentiels. Dans le cas contraire, un accs non-autoris lquipement peut tre possible. SEL dcline toute responsabilit pour tout dommage rsultant de cet accs non-autoris. CAUTION Although the power level is low, concentrated energy from a directional antenna may pose a health hazard. Do not allow users to come closer than 34 cm (14 in) to the antenna when the transmitter is operating in indoor or outdoor environments in the 900-MHz band. ATTENTION Bien que le niveau de puissance soit bas, l'nergie concentre d'une antenne directionnelle peut tre un danger pour la sant. Ne pas autoriser les usagers s'approcher moins de 34 cm (14 po) de l'antenne quand l'metteur est en opration dans un environnement intrieur ou extrieur dans la bande des 900-MHz. CAUTION The radio contains devices sensitive to electrostatic discharge (ESD). Undetectable permanent damage can result if you do not use proper ESD procedures. Ground yourself, your work surface, and this equipment before removing any cover from this equipment. If your facility is not equipped to work with these components, contact SEL about returning this device and related SEL equipment for service. ATTENTION La radio contient des circuits sensibles aux dcharges lectrostatiques (DES). Des dommages permanents non-dcelables peuvent rsulter de labsence de prcautions contre les DES. Raccordez-vous correctement la terre, ainsi que la surface de travail et lappareil avant den retirer un panneau. Si vous ntes pas quips pour travailler avec ce type de composants, contacter SEL afin de retourner lappareil pour un service en usine. SEL-3031 Instruction Manual Date Code 20211103 Section 1 Introduction and Overview Overview The SEL-3031 is a 900-MHz, license-free, spread-spectrum radio. The radio operates in the ITU Region 2 ISM band of 902928 MHz through the use of a fast frequency-

hopping algorithm for noise immunity and long-distance operation. The SEL-3031 prevents the need for multiple sets of radios or expensive dedicated fiber transmitting over long distances. Figure 1.1 shows the flexibility of the SEL-3031 in providing DNP3 SCADA information, MIRRORED BITS control for reclosing coordination, and engineering access to the SEL-651R Recloser Control. Engineering Access DNP SEL-3351 SEL-3031 MIRRORED BITS SEL-351S Substation Radio SEL-651R SEL-3031 Pole-Mount Radio Figure 1.1 Point-to-Point Product Overview Figure 1.2 shows the flexibility obtained when using the SEL-3031 in point-to-

multipoint (P2MP) applications providing DNP3 or Modbus SCADA information from many remotes to one master. Date Code 20211103 SEL-3031 Instruction Manual 1.2 Introduction and Overview Features, Benefits, and Applications Figure 1.2 Point-to-Multipoint Product Overview Features, Benefits, and Applications Dual Radio Operating Modes Provide Flexibility. Supports point-to-point (P2P) radio operation for fast teleprotection, distribution automation, distributed generation, and economical backup protection. Apply point-to-multipoint (P2MP) radio operation for SCADA and other data-gathering from remote locations. Three Ports in One Radio Reduce Costs. Simultaneously communicates with as many as three independent ports and protocols via point-to-point radio operation. Low Latency Enables Fast Control. Transfers control commands with a typical 4.8 ms latency with SEL MIRRORED BITS communications. Strong Security Thwarts Attackers. Protects critical data and repels malicious attacks with optional encryption card, using session authentication and strong 256-bit Advanced Encryption Standard

(AES) technology. Tough Radio Operates in Extreme Conditions. Is designed, built, and tested for trouble-free operation in extreme temperature, electromagnetic interference, shock, and vibration conditions. No Licensing Reduces Delays and Expenses. Uses the license-free, 900-MHz ISM band for on-time, on-budget projects. Mounting Options Simplify Installation. Order your SEL-3031 in either a rack-mount or wall-mount form factor. SEL-3031 Instruction Manual Date Code 20211103 Introduction and Overview Models, Options, and Accessories 1.3 Multiple Protocols Satisfy Interconnection Requirements. Communicate with industry-standardized byte-oriented protocols, such as DNP3, Modbus, SEL MIRRORED BITS communications, IEEE C37.118 Synchrophasors, SEL Fast Messaging, and SEL ASCII. Flexible Serial Port Options Match Integration Needs. Order serial Port 1 as EIA-232, EIA-485, or optical fiber to easily connect to your existing devices. Simple Settings Streamline Radio Commissioning. Use ACSELERATOR QuickSet SEL-5030 Software for all settings. USB Management Port Conveniently Connects to PC. Make settings changes, verify status information for proper installation, and verify radio performance without affecting the three serial channels. Models, Options, and Accessories Standard Features P2P and P2MP operation modes Three EIA-232 serial ports IRIG-B time code input Radio synchronization with collocated radios Power supply Wall mount: 930 Vdc Rack mount: 2448 Vdc, 110240 Vac, or 125250 Vdc ACSELERATOR QuickSet software Protocol pass-through support DNP3 Modbus SEL MIRRORED BITS SEL Fast Messaging SEL ASCII IEEE C37.118 Synchrophasors Optional Features One port EIA-485 One port fiber-optic (SEL-2812 and SEL-9220 compatible) SEL-3044 Encryption Card Special frequencies for Brazil Date Code 20211103 SEL-3031 Instruction Manual 1.4 Introduction and Overview Models, Options, and Accessories Accessories Table 1.1 Radio Antenna and Cable Accessories Description Feedline RG-8X TNC Male to N Male Cable RG-8X TNC Male to TNC Male Cable LMR-400 TNC Male to N Male Cable LMR-400 TNC Male to TNC Male Cable LMR-400 N Male to N Male Cable 7/8" HELIAX N Male to N Male Cable N Female to TNC Male Adapter Antenna Part Number SEL-C964 SEL-C965 SEL-C966 SEL-C961 SEL-C968 SEL-C978 240-1809 Low-Profile 3 dBi Gain Omnidirectional, N Female Connector 235-0003 Vertical 7.15 dBi Gain Omnidirectional, N Female Connector 235-0232 Vertical 9.15 dBi Gain Omnidirectional, N Female Connector 235-0233 3-Element 8.15 dBi Gain Yagi, N Female Connectora 5-Element 11.1 dBi Gain Yagi, N Female Connectora 11-Element 14.15 dBi Gain Yagi, N Female Connectora Indoor 8" Vertical, TNC Male Connector Antenna Mounting 235-0009 235-0220 235-0222 235-0108 Vertical Omnidirectional Mount for 14" Maximum Diameter Poles 240-0103 Yagi Mount for 14" Maximum Diameter Poles Mast Mount for Large Omnidirectional Antennas (2.5" Maxi-

mum Diameter Antenna to 2.5" Maximum Diameter Mast) 240-0104 240-0106 Mounting Bracket for Low-Profile Omnidirectional Radio Antennas (235-0003) 915900494 Surge Protection Radio Surge Protector With N Male Connectors 200-2004 a Comes equipped with pipe-mounting hardware. SEL-3031 Instruction Manual Date Code 20211103 Introduction and Overview Models, Options, and Accessories 1.5 Antenna with N Female Connector LMR-400 N Male to N Male Cable (SEL-C968) Radio Surge Protector With N Female Connectors

(200-2004) RG-8X TNC Male to N Male Cable (SEL-C964) or LMR-400 TNC Male to N Male Cable (SEL-C966) SEL-3031 Figure 1.3 Radio Antenna Connections Date Code 20211103 SEL-3031 Instruction Manual 1.6 Introduction and Overview Product Diagrams Product Diagrams I S S S A H C T N U O M

L L A W I S S S A H C T N U O M

K C A R b 3 6 1 9 i 5 0 0

) 7 2

. 1

3 7 5

. 0 0 3

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) 2 6 7

P O T 0 4 6

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5 1

. 9

) 4 2 3 2

6 6 8

) 7 9 1 2

3 7

. 1

) 9 3 4

E D S I T N O R F E D S I

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P O T

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) 1

. 5 6 4

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) 6 2 8 4

D N E G E L n i 1 2 0

) 3 5

. 0 3 6

) 0 6 1

2 7

. 1

) 7 3 4

Figure 1.4 SEL-3031 Dimensions SEL-3031 Instruction Manual Date Code 20211103 Introduction and Overview Product Diagrams 1.7 b 0 1 2 4 i Figure 1.5 SEL-3031 Rack Mount (Front and Rear) Date Code 20211103 SEL-3031 Instruction Manual 1.8 Introduction and Overview Product Diagrams Figure 1.6 SEL-3031 Wall Mount (Front and Rear) SEL-3031 Instruction Manual Date Code 20211103 Introduction and Overview Specifications 1.9 Specifications Compliance Alarm Contact Designed and manufactured under an ISO 9001 certified quality management system UL Listed to U.S. and Canadian safety standards (File E220228; NRAQ, NRAQ7) SEP (SEL-3044 encryption card):

FIPS 140-2 Level 2 historical Also see Table 1.2. General Temperature Range 40 to +85C per IEC 60068-2-1 and 60068-2-2 Operating Environment Pollution Degree:

Relative 2 Humidity:

595%, noncondensing Maximum Altitude:

Dimensions Wall Mount:

Rack Mount:

2000 m 43.9 mm x 219.7 mm x 162.6 mm

(1.73 in x 8.66 in x 6.40 in) 43.7 mm x 482.6 mm x 160.0 mm

(1.72 in x 19.00 in x 6.3 in) Time-Code Input Port 2, Pins 4 and 6 Form B Contact

(open when energized and passes diagnostics) Operating Voltage*:

250 Vdc or 190 Vac Dielectric Test Voltage*:

500 Vrms Continuous Carry*:

Pilot Duty Ratings**:

Resistive Ratings**:

6 A B300, R300 250 Vac, 24 Vdc, 6 A

*Parameters verified by SEL per IEC 60255-

1:2009 and IEEE C37.90-2005.

**Per UL 508. Communications Communications Ports Serial Port 1 Data Speed Without Encryption Card:

38400 bps (disables Port 2), 19200 bps, or 9600 bps Data Speed With Encryption Card:

19200 bps (disables Port 2) or 9600 bps EIA-232, EIA-485 (ordering option) Connector:

9-Pin D-Subminiature Fiber-Optic Ordering Option Connectors:

2 ST (Tx and Rx) Format:

Input Demodulated IRIG-B Encoding SEL-2812/SEL-9220 Compatible Impedance:

333 Wavelength:

850 nm multimode Accuracy:

5 milliseconds Typical Tx Power:

Min. Rx 13 dBm Sensitivity:

29 dBm Optical Budget:

16 dB Date Code 20211103 SEL-3031 Instruction Manual 1.10 Introduction and Overview Specifications Compatible Fiber-Optic Core Diameter:

50, 62.5, or 200 m Serial Port 2, 3 Standard EIA-232 Data Speed Without Encryption Card:

Receiver Sensitivity:

Bit Error Rate

(BER):

Distance:

97 dBm, 104 dBm with ARQ on

106 at 97 dBm 32 km (20 mi), line of sight 19200 bps or 9600 bps Error Detection: 32-bit CRC Data Speed With Encryption Card:

9600 bps Connector:

9-Pin D-Subminiature Protocols Modbus, DNP3, SEL MIRRORED BITS Communications (MB8), ACSELERATOR QuickSet SEL-5030 Software Support, SEL ASCII and Compressed ASCII, SEL Fast Messaging, IEEE C37.118 Synchrophasors Typical Latency SEL-3031 MIRRORED BITS: 8.9 ms at 9600 bps 5.6 ms at 19200 bps 4.8 ms at 38400 bps Standard:

4.9 ms at 9600 bps 4.3 ms at 19200 bps 3.8 ms at 38400 bps Power Supply Rated Supply Voltage Wall-Mount Model:

Low-Voltage Model:

930 Vdc 2448 Vdc High-Voltage Model:

125250 Vdc 110240 Vac, 50/60 Hz Input Voltage Range Wall-Mount Model:

Low-Voltage Model:

High-Voltage Model:

930 Vdc 1860 Vdc 85275 Vdc; 85264 Vac Power Consumption Wall Mount:

5 W SEL-3031 With SEL-3044 Encryption Card Rack Mount:

<8 W/30 VA MIRRORED BITS: 9.7 ms at 9600 bps 7.4 ms at 19200 bps Standard:

5.7 ms at 9600 bps 5.3 ms at 19200 bps Radio Transmitter Power Consumption With SEL-3044 Card Wall Mount:

6 W Rack Mount:

Type Tests

<9 W/31 VA Communications Equipment Tests Frequency Band: 902928 MHz ISM band IEEE 1613-2003 Modulation:

GFSK Environmental Tests Operating Mode: Point-to-Point Enclosure RF Connector:

TNC Power Output:

1 W (30 dBm) to 100 mW (20 dBm) in steps of 1 dBm Channel Bandwidth:

250 kHz Protection:

IEC 60529:2001 Vibration Resistance:

IEC 60255-21-1:1988 Class 1 Endurance Class 2 Response IEC 60255-21-3:1993 Class 2 SEL-3031 Instruction Manual Date Code 20211103 Introduction and Overview Specifications 1.11 Shock Resistance:

IEC 60255-21-2:1988 Class 1 shock withstand, Conducted RF Immunity:

IEC 61000-4-6:2008 10 Vrms Cold:

Damp Heat, Cyclic:

Dry Heat:

bump Class 2 shock response IEC 60068-2-1:2007 40C, 16 hours IEC 60068-2-30:2005 2555C, 6 cycles, 95%

relative humidity IEC 60068-2-2:2007

+85C, 16 hours Dielectric Strength and Impulse Tests Dielectric

(HiPot):

Impulse:

IEC 60255-5:2000 IEEE C37.902005 IEC 60255-5:2000 0.5 J, 5 kV RFI and Interference Tests EMC Immunity Standard:

IEEE 1613, Class 2 Electrostatic Discharge:

Radiated RF Immunity:

Fast Transient, Burst Immunity:

Surge Withstand Capability Immunity:

IEC 61000-4-2:2008 8 kV contact discharge 15 kV air discharge IEEE C37.90.32001 8 kV contact discharge 15 kV air discharge IEC 61000-4-3:2008 10 V/m IEEE C37.90.22004 35 V/m IEC 61000-4-4:2004 4 kV @ 2.5 kHz, and 5.0 kHz for communications ports, power supply, alarm contacts IEC 60255-22-1:2007 2.5 kV common-mode 1 kV differential-mode IEEE C37.90.12002 2.5 kV oscillatory, 4 kV fast transient for communications ports, power supply, alarm contacts Digital Radio Telephone RF Immunity:

ENV 50204-1995 Severity Level:

10 V/m at 900 MHz and 1.89 GHz EMC Emissions Radiated Emissions FCC Part 15.247; ICES-001; RSS-247 This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. FCC Part 15, Class A Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. FCC Section 15.21 Users manual for an intentional or unintentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. Canada ICES-001(A) / NMB-001(A) Date Code 20211103 SEL-3031 Instruction Manual 1.12 Introduction and Overview Specifications Table 1.2 Certifications by Country Country Authority Reference USA FCC ID: R34SEL-3031R Canada ISED ID: 4468A-SEL3031R Part Number Starts With 3031 3031 SEL-3031 Instruction Manual Date Code 20211103 Section 2 Installation Overview RF Exposure Notice RF EXPOSURE The SEL-3031 transmitter module is approved for use only with specific antenna, cable, and output power configurations that have been tested and approved for use. Modifications to the SEL-3031, the antenna system, or to the power output that have not been explicitly specified by the manufacturer are not permitted and may render the radio non-compliant with applicable regulatory authorities. The radio equipment described in this manual emits radio frequency energy. Professional installation is required. The antenna(s) for this transmitter must not be collocated or operated in conjunction with any other antenna or transmitter. CAUTION Although the power level is low, concentrated energy from a directional antenna may pose a health hazard. Do not allow users to come closer than 34 cm (14 in) to the antenna when the transmitter is operating in indoor or outdoor environments in the 900-MHz band. FCC Part 15 Notice NOTE: Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. This equipment has been tested and found to comply with the limits for Class A digital devices, pursuant to FCC Part 15 Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and radiates radio frequency energy, and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential environment is likely to cause harmful interference, in which case the user will be required to correct the interference at his/her own expense. Date Code 20211103 SEL-3031 Instruction Manual

Antennas Low-Profile 3 dBi Gain Omnidirectional, N Female Connector 235-0003 Vertical 7.15 dBi Gain Omnidirectional, N Female Connector 235-0232 Vertical 9.15 dBi Gain Omnidirectional, N Female Connector 235-0233 3-Element 8.15 dBi Gain Yagi, N Female Connectora 5-Element 11.1 dBi Gain Yagi, N Female Connectora 11-Element 14.15 dBi Gain Yagi, N Female Connectora Indoor 8" Vertical, TNC Male Connector 235-0009 235-0220 235-0222 235-0108 2.12 Installation Connections Connections Rear-Panel Connections The physical layout of the SEL-3031 connections is shown in Figure 2.5. Figure 2.5 Wall-Mount and Rack-Mount Rear Connections Power Connections The POWER terminals on the rear panel (labeled +/H and -/N) must connect to the correct supply voltage. The supply voltage range is located on the serial label. The wall-mount configuration accepts only 930 Vdc. The rack-mount configuration accepts 2448 Vdc, 110240 Vac, or 125250 Vdc. Do not apply power to the SEL-3031 without having a proper 50 load on the antenna port. If you do not have the proper 50 load connected, the radio antenna port will shut off, the alarm contact will pulse, and the ALARM LED will illuminate. This functionality protects the radio circuitry and indicates an antenna or cable failure. The POWER terminals on the rack-mount version are isolated from chassis ground. The POWER terminals on the wall-mount version are not isolated from chassis ground. Use 2.5 mm2 (14 AWG) size wire to connect to the POWER terminals on the rack mount. Place an external circuit breaker or switch no more than 3 m (10 ft) from the equipment. The circuit breaker (or equivalent approved disconnect device appropriate for the country of installation) must comply with IEC 60947-1 and IEC 60947-3, be identified as the disconnect device for the equipment, and be located near the equipment. This disconnect device must interrupt both the hot (+/H) and the neutral

(/N) power leads. The maximum current rating for the power disconnect circuit breaker or overcurrent device (fuse) must be 20 A. An internal power supply fuse protects the operational power supply. Be sure to use fuses that comply with IEC 60127-2. SEL-3031 Instruction Manual Date Code 20211103 Installation Connections 2.13 Lightning Protection WARNING Atmospheric electrical charge accumulation can cause potential between the conductor and shield of the feedline, or cause lightning to strike an antenna. A lightning protector should be installed to prevent damage to equipment or injury to personnel. Mounting the antenna on an equipment building roof or tower is safest because the potential rise on the outside of either of these structures will approximately equal the potential on the inside. A lightning protector (Radio Surge Protector, SEL part number 200-2004) should be used to equalize the difference in potential that can occur between the center conductor and the shield of the coaxial cable between the antenna and the radio. The higher the antenna is mounted on a support structure, the greater the probability of equipment damage resulting from a lightning strike. In all surge-protector applications, you should mount the surge protector at the building or enclosure entrance, and ground the surge-protector body. Ground the radio to the same point as the surge-protector ground to avoid ground-rise-potential damage. When using the surge protector, order an additional SEL-C964 or SEL-C966 cable and place this cable between the SEL-3031 and the surge protector. Because the distance varies from the SEL-3031 to the surge protector, be sure to specify this cable at approximately the correct length (plus 10 to 20 percent for installation variability). Grounding (Earthing) Connections You must connect the ground terminal labeled GND to a rack frame or switchgear ground for proper safety and performance. Use 2.5 mm2 (14 AWG) wire less than 2 m (6.6 ft) in length for the ground connection. Serial Ports Because all ports (1, 2, and 3) are independent, you can communicate to any combination simultaneously. All EIA-232 ports accept DB-9 male connectors. The serial port EIA-485 option for Port 1 is also a DB-9 male connector. If Port 1 is ordered with the EIA-485 option the product will ship with a DB-9-to-terminal adapter to easily wire to EIA-485 systems. Port 2 includes the IRIG-B time-code signal input (see Table 2.8). SEL offers fiber-optic transceivers or fiber-optic port options on Port 1

(SEL-2812 and SEL-9220 compatible fiber-optic) for connecting devices at distances over 15 meters (50 feet) where copper cable is not appropriate. The SEL-2800 family of transceivers provides fiber-optic links between devices for electrical isolation and longer distances, overcoming the limitations of electrical EIA-232 interfaces. Contact SEL for further information on these products. Date Code 20211103 SEL-3031 Instruction Manual Installation Front-Panel Indicators 2.15 IRIG-B Time-Code Input The SEL-3031 accepts a demodulated IRIG-B time signal to synchronize the internal clock with an external time source. IRIG-B is available on Port 2 utilizing Pins 4 and 6 for time communications. The SEL-3031 supports the IRIG-B002 standardized time format. Table 2.8 Communications Cables for Time and Communications Connections EIA-232 Serial Port Connect to Device SEL Cable No. Port 2 IRIG-B BNC with time only SEL communications processors and com-

puting platform data with IRIG-Ba C256 C387 IRIG-B only from DB-9 on SEL-2407 C388 a If connecting to an SEL communications processor you must turn the 5V_EN Global setting in the SEL-3031 to OFF. Front-Panel Indicators The SEL-3031 has ten front-panel LED indicators. Table 2.9 further describes these indicators that display the current status of the radio. The LINK LED indicates when the SEL-3031 has properly connected to another SEL-3031. The SEC LED deals with the SEL-3044 Encryption Card. See Appendix B: Firmware Upgrade Instructions for more information on using this card. Date Code 20211103 SEL-3031 Instruction Manual 2.16 Installation Communications Table 2.9 Front-Panel Status Indicator LEDs Label Color Description ENABLE ALARM Green All self-tests are passing and unit is operational Red ON: Self-test failure detected Flashing: Antenna failure SEC Green ON: Encryption card detected and wireless data secured Flashing: Encryption card detected and in RESET OFF: No encryption card present or card failed LINK Green Communications link established between master and remote radio TX 1, 2, 3 Green Serial data received by the port and transmitted out of the radio RX 1, 2, 3 Red Radio data received and transmitting out of serial port Communications Serial Ports Table 2.10 shows the physical interfaces of the SEL-3031. Several options are provided for Port 1 physical interfaces, including EIA-232, EIA-485, and fiber. Table 2.10 SEL-3031 Port Description Port Port 1 Port 2 Port 3 USB Communications Interface Location EIA-232, EIA-485, or fiber Rear (Port 1 has three ordering options) EIA-232 EIA-232 USB 1.1 Rear Rear Front (management port) Serial (EIA-232 and EIA-485) Use the EIA-232 port for communications distances of 15.2 m (50 ft) in low-noise environments. Use the optional EIA-485 Port 1 for communications of 1200 m

(3937 ft) maximum distance (to achieve this performance, ensure proper line termination at the receiver). If Port 1 is an EIA-485 connection, there are two types of connections that will work on multidrop systems. Table 2.11 shows the standard pinout of a recommended four-wire EIA-485 connection. If your system only works on a two-wire EIA-485 connection, you will need to connect Pins 1 and 7 together and Pins 2 and 8 together. Figure 2.6 shows how to wire this configuration. SEL-3031 Instruction Manual Date Code 20211103 Port 1 EIA-485 9-Pin Male D Subconnector 2-Wire EIA-485 Pin #

1 7 2 8 5 5 TXD+

RXD+

TXD RXD GND GND SHELL Installation Communications 2.17 2-Wire EIA-485 Tinned Wires Data+

Data-

GND GND No Connection Figure 2.6 SEL-C693 Cable: Two-Wire EIA-485 Connections Fiber-Optic Serial Port Order the fiber-optic option for Port 1 for safety and long-distance communications as far as 4 km (2.5 mi). The fiber-optic port is an SEL-2812-compatible device that can connect directly to any SEL-2812-compatible device or SEL-2812 Fiber-Optic Transceiver, using multimode fiber-optic cable with a core diameter of 50 to 200 m. When working with this device, observe the following safety precautions:

WARNING Do not look into the fiber (laser) ports/connectors. Do not look into the end of an optical cable connected to an optical output. Do not perform any procedures or adjustments that this instruction manual does not describe. During installation, maintenance, or testing of the optical ports, use only test equipment qualified for Class 1 laser products. Incorporated components, such as transceivers and laser emitters, are not user serviceable. Return units to SEL for repair or replacement. Port Connector and Communications Cables Figure 2.7 shows the EIA-232 and EIA-485 DB-9 connector pin numbering for the SEL-3031. 5 4 3 2 1 9 8 7 6 Figure 2.7 EIA-232 and EIA-485 DB-9 Connector Pin Numbers Date Code 20211103 SEL-3031 Instruction Manual 2.18 Installation Communications Table 2.11 shows the pin function of the serial ports. Table 2.11 SEL-3031 Port Description Pin 1 2 3 4 5 6 7 8 9 Port 1 EIA-232

+5 Vdc Port 2 EIA-232

+5 Vdc Port 3 EIA-232

+5 Vdc RXD TXD N/C GND N/C RTS CTS N/C RXD TXD IRIG+

GND IRIG RTS CTS N/C RXD TXD N/C GND N/C SYNC IN SYNC OUT N/C Port 1 EIA-485 TX+

TX-

N/C N/C GND N/C RX+

RX N/C Cleaning Use care when cleaning the SEL-3031. Perform the following steps:

Step 1. Step 2. Use a mild soap or detergent solution and a damp cloth to clean the chassis. Be careful cleaning the front and rear panels because a permanent plastic sheet covers each panel. Do not use abrasive materials, polishing compounds, or harsh chemical solvents (such as xylene or acetone) on any surface. SEL-3031 Instruction Manual Date Code 20211103 Installation Communications 2.19 Cables SEL-3031 9-Pin Male Subminiature "D" Connector PC Device 9-Pin Female Subminiature "D" Connector Pin Func. RXD TXD GND RTS CTS Pin #

2 3 5 7 8 ORANGE RED BLUE/SHIELD GREEN WHITE Pin Func. RXD TXD GND RTS CTS Pin #

2 3 5 7 8 NOTE: For best results, limit the cable length to 15 m (~50 ft) Figure 2.8 SEL-C245A Cable: SEL-3031 to Computer SEL-3031 9-Pin Male Subminiature "D" Connector DTE Device No IRIG 9-Pin Male Subminiature "D" Connector Pin Func. RXD TXD GND RTS CTS Pin #

2 3 5 7 8 ORANGE RED BLUE/SHIELD GREEN WHITE Pin #

2 3 5 7 8 NOTE: For best results, limit the cable length to 15 m (~50 ft) Figure 2.9 SEL-C285 Cable: SEL-3031 to DTE Device (SEL Relays) Date Code 20211103 SEL-3031 Instruction Manual 2.20 Installation Communications SEL-3031 9-Pin Male Subminiature "D" Connector SEL Communications Processor With IRIG 9-Pin Male Subminiature "D" Connector Pin #

1 2 3 4 5 6 7 8 9 Pin #

1 2 3 4 5 6 7 8 9 NOTE: For best results, limit the cable length to 15 m (~50 ft) CAUTION You must turn off the +5 V on Pin 1 of the SEL-3031 when connecting to a communications processor. Figure 2.10 SEL-C387 Cable: SEL-3031 to SEL Communications Processor With IRIG-B SEL-3031 9-Pin Male

"D" SUB CONNECTOR DB-9-P SEL-3031 9-Pin Male

"D" SUB CONNECTOR DB-9-P CABLE: 9 Conductor 22 AWG 7/30 Tinned Copper with PVC Jacket

(Shielded: Alpha 1298C or equal; Unshielded: Alpha 1179 or equal) Pin Func. RXD TXD GND SYNC IN SYNC OUT SHELL Pin #

2 3 5 7 8 ORANGE RED BLUE/SHIELD GREEN WHITE SHIELD Pin #

3 2 5 8 7 Pin Func. RXD TXD GND SYNC IN SYNC OUT NO CONNECTION Figure 2.11 SEL-C273A Cable: SEL-3031 Repeater and Synchronizing Cable SEL-3031 Instruction Manual Date Code 20211103 Installation Communications 2.21 SEL-3031 9-Pin Male Subminiature "D" Connector DTE Device 9-Pin Female Subminiature "D" Connector Pin Func.

+5Vdc RXD TXD GND Pin #

1 2 3 5 SYNC IN GND SYNC OUT 7 5 8 BROWN ORANGE RED SHIELD BLUE BLACK WHITE Pin Func.

+5Vdc RXD TXD GND Pin #

1 2 3 5 SYNC IN/OUT BNC Jack Connectors CENTER SHIELD CENTER SHIELD SYNC IN SYNC OUT NOTE: For best results, limit the cable length to 15 m (~50 ft) Figure 2.12 SEL-C576 Cable: Synchronizing Cable for SEL-3031 USB Interface The SEL-3031 uses a standard USB Type-B interface for the management port. The USB interface is used for settings management, initial radio installation, and reporting data from long-term radio statistics. The management port may be used while the SEL-3031 is in service without disrupting the radio communications. To use this interface, plug a USB Type-B cable into the radio and plug the other end into your PC. This will automatically prompt your PC to install a USB-to-serial driver that creates a virtual serial port. The virtual serial port needs to be set to 9600 bps, 8 data bits, 1 stop bit, and no parity to properly communicate with the SEL-3031. This virtual serial port can now be used with ACSELERATOR QuickSet SEL-5030 Software to help set and view settings and obtain report information. SEL-3031 Figure 2.13 USB Interface Date Code 20211103 SEL-3031 Instruction Manual This page intentionally left blank Section 3 Job Done Examples Overview This section has four job done examples of how to easily set up the SEL-3031 for common applications. This section assumes you have established a radio link. If you are having problems setting up the radio link, refer to Section 2: Installation and Section 5: Performance Monitoring, Testing, and Troubleshooting for more information. This section contains four Job Done examples for the following applications. High-Speed Teleprotection or Control With MIRRORED BITS Communications Using an SEL Information Processor to Collect Relay Status and Measurements Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol Configuring Collocated Antennas Using SEL Hop-Sync Technology High-Speed Teleprotection or Control With MIRRORED BITS Communications SEL-3031 SEL-2100 SEL-3031 SEL-351 SEL-2505 Figure 3.1 SEL MIRRORED BITS Connection Example Date Code 20211103 SEL-3031 Instruction Manual 3.2 Job Done Examples High-Speed Teleprotection or Control With MIRRORED BITS Communications The SEL-3031 can handle as many as three MIRRORED BITS connections simultaneously over one radio link. For this example, there are three MIRRORED BITS channels over the SEL-3031. This example shows you how to set the radio and set different end devices to properly use the radio as a MIRRORED BITS link. SEL-3031 MIRRORED BITS Settings For Figure 3.2, we set Port 1 on both SEL-3031 devices as a MIRRORED BITS connections. On each radio, set the following settings on the Port 1 settings. Figure 3.2 SEL-3031 Port Settings for MIRRORED BITS Connection The SEL-3031 makes it very simple to set a MIRRORED BITS connection. Set the PROTO setting to MB8 to make it a MIRRORED BITS port. The SEL-3031 without an encryption card has data rate of 9600, 19200, or 38400 bps (8, N, 1). Setting the speed to 38400 provides the lowest latency at the cost of disabling Port 2. Port 3 can still be used for data at 9600 or 19200 bps speeds. On Port 1 on each radio, install an SEL-C285 cable to the IED. As an alternative, the SEL-3031 can be ordered with a fiber-optic serial port that works with SEL-2812 transceivers. If you use the fiber-optic port on the SEL-3031, the IED connection needs to be an SEL-2812MR Fiber-Optic Transceiver. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples High-Speed Teleprotection or Control With MIRRORED BITS Communications 3.3 SEL-351, SEL-311, and SEL-700 Series MIRRORED BITS Settings The required settings for the SEL-351 are shown below. These settings are similar to all of the SEL-351, SEL-311, and SEL-700 series of relays. To establish a communications link via the radio, the most critical settings are PROTO, SPEED, RTSCTS, RXID, and TXID.

=>SHO P 2 <Enter>

Port 2 PROTO = MB8A SPEED = 19200 RTSCTS= N TXID = 2 RXID = 1 RMB1DO= 1 RMB1PU= 1 RMB3DO= 1 RMB3PU= 1 RMB5DO= 1 RMB5PU= 1 RMB7DO= 1 RMB7PU= 1 RBADPU= 60 RXDFLT=XXXXXXXX RMB2PU- 1 RMB4PU- 1 RMB6PU- 1 RMB8PU- 1 CBADPU= 1000 RMB2DO= 1 RMB4DO= 1 RMB6DO= 1 RMB8DO= 1 Figure 3.3 SEL-351 Port Settings for MIRRORED BITS Connection The SEL-3031 allows you to set Port 1 to 9600, 19200, or 38400 bps (8, N, 1). If the SEL-3044 Encryption Card is used, the data rate changes to 9600 or 19200 bps

(8, N, 1). Set PROTO equal to MB8x, where x equals A or B depending on which MIRRORED BITS channel is used. NOTE: This setting is slightly different in the SEL-2100 Logic Processor, SEL-3530 Real-Time Automation Controller

(RTAC), and SEL-321 Relay. Set SPEED equal to 9600, 19200, or 38400 bps (or 9600/19200 if the encryption card is installed). Set RTSCTS (hardware handshaking) to N to disable that option. Set the RXID equal to one and TXID equal to two at the master end. At the remote end, set the RXID equal to two and the TXID equal to one. The relays use these addresses to prevent a relay from receiving messages from a secondary MIRRORED BITS device if the paths are accidentally connected wrong. The relay only receives messages sent by a relay with the matching transmit address and vice versa. To connect the relay to the radio, use an SEL-C285 cable (DB-9 male-to-DB-9 male straight-through). If complete electrical isolation is desired between the radio and a relay EIA-232 communications port, use the SEL-2812MR Fiber-Optic Transceiver and fiber-optic cable to connect the relay to the radio. Date Code 20211103 SEL-3031 Instruction Manual 3.4 Job Done Examples High-Speed Teleprotection or Control With MIRRORED BITS Communications SEL-400 Series MIRRORED BITS Settings The required port settings for SEL-400 series relays are shown below. To establish communication via the radio, the most critical settings are PROTO, MBT, SPEED, STOPBIT, TXID, RXID, and TXMODE. All other settings are per the application requirements. Protocol Selection

:= MBA PROTO Communications Settings MBT

:= N SPEED

:=19200 STOPBIT := 2 Mirrored Bits Protocol Setting TX_ID TXMODE RMB1DO RMB3FL RMB4PU RMB5DO RMB7FL RMB8PU

:= 2

:= P

:= 1

:= P

:= 1

:= 1

:= P

:= 1 RX_ID MBNUM RMB2FL RMB3PU RMB4DO RMB6FL RMB7PU RMB8DO

:= 1

:= 8

:= P

:= 1

:= 1

:= P

:= 1

:= 1 RBADPU RMB1FL RMB2PU RMB3DO RMB5FL RMB6PU RMB7DO

:= 10

:= P

:= 1

:= 1

:= P

:= 1

:= 1 CBADPU RMB1PU RMB2DO RMB4FL RMB5PU RMB6DO RMB8FL

:= 20000

:= 1

:= 1

:= P

:= 1

:= 1

:= P Figure 3.4 SEL-451 Port Settings for MIRRORED BITS Connection Set PROTO equal to MBx, where x equals A or B depending on which MIRRORED BITS channel is being used. Set MBT equal to N to disable that option. Set SPEED equal to 19200 (or 9600 if the encryption card is installed). Set STOPBIT equal to 2. NOTE: If you are using the SEL-3044 Encryption Card, you must change the connected devices RMBxPU and RMBxDO settings = 2 to maintain the same level of channel security as the standard MB8 protocol. This will delay operation by one processing interval but will give you a higher level of channel security. Set the RXID equal to one and TXID equal to two at the master end. At the remote end, set the RXID equal to two and the TXID equal to one. The relays use these addresses so that the master relay only receives messages sent by a relay with the matching transmit address and vice versa. Set TXMODE equal to P (Paced). To connect the relay to the radio, use an SEL-C285 cable (DB-9 male-to-DB-9 male straight-through). If complete electrical isolation is desired between the radio and antenna and the EIA-232 communications port of the relay, use the SEL-2812MR Fiber-Optic Transceiver and fiber-optic cable to connect the relay to the radio. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples High-Speed Teleprotection or Control With MIRRORED BITS Communications 3.5 SEL-2505 and SEL-2506 Settings The SEL-2505 and SEL-2506 use control (DIP) switches to set the MIRRORED BITS connection. For easy installation order the SEL-2505 with the SEL-2812 fiber-optic option (SEL-2505x6xXX). Use multimode SEL-C808 or SEL-C807 ST terminated fiber-optic cable to directly connect the SEL-2505 to an SEL-3031 equipped with a fiber-optic option for Port 1. Other transceiver models can be used as long as the corresponding SEL-2800 family transceiver is used on both ends. Figure 3.5 SEL-2505 DIP Switch Settings for MIRRORED BITS Connection Set the TX_ADD equal to one and set RX_ADD equal to two at the local end. At the remote end, set the RXID equal to two and the TXID equal to one. The devices use these addresses so that the master relay only receives messages sent by a relay with the matching transmit address and vice versa. Set Switch 9 and 10 equal to MB8/9600, MB8/19200, or MB8/38400 for the Protocol/Baud setting. If the SEL-3031 contains the SEL-3044 Encryption Card then the Protocol/Baud setting must be MB8/9600 or MB8/19200. To connect the SEL-2505 to the radio, use a 62.5 m multimode SEL-C808 or SEL-C807 fiber-optic cable. Order these cables equipped with ST connectors and your choice of zipcord or waterproof heavy-duty jacketed fibers. Initial Checkout An easy way to verify that the relays are communicating is to use the TARget command, as shown below.

=>TAR ROKA <Enter>

LBOKB 0 CBADB 0 RBADB 0 ROKB 0 LBOKA 0 CBADA 0 RBADA 0 ROKA 1 Figure 3.6 TAR ROKA Command From an SEL-351 The results shown here are from an SEL-351 Relay. ROKA is asserted, meaning that the two relays have established MIRRORED BITS communication. For longer-term channel tests, use the COM report command available in the relay and suggestions described in Monitoring Radio Performance on page 5.1. Date Code 20211103 SEL-3031 Instruction Manual 3.6 Job Done Examples Using an SEL Information Processor to Collect Relay Status and Measurements Using an SEL Information Processor to Collect Relay Status and Measurements SEL information processors and computing platforms easily collect relay status and measurement information. SEL information processors include the SEL-3530 Real-

Time Automation Controller, SEL-2032, SEL-2030, and SEL-2020 Communications Processors, and ruggedized SEL computers configured as intelligent servers or gateways. An SEL information processor can be used as a data collection point, port switch, and to control operations all through one serial port. The SEL-3031 serial interface allows you to obtain all of this relay information from remote IEDs through the use of the wireless connection. The example below will show you how to set the radio, relays, and communications processors to allow the Fast Messaging protocol to operate over a wireless connection. SEL-3031 SEL-2032 SEL-3031 SEL-351 SEL-451 Figure 3.7 SEL-3031 Linking Information Processors to Relays SEL-3031 Settings The SEL-3031 requires very few inputs for setting up the serial port to the correct protocol. Figure 3.8 shows the settings needed for Port 1. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples Using an SEL Information Processor to Collect Relay Status and Measurements 3.7 Figure 3.8 SEL-3031 Port 1 Settings for Fast Messaging The PROTO setting must be set to Standard. The Standard setting is the default for use on any byte-oriented protocol. The Standard setting is used with connections such as DNP3, SEL ASCII, Compressed ASCII, Fast Operate, Fast SER, and SEL Fast Meter with Configuration. The ARQ setting should be set to Y. This allows data retransmission when an error is detected. The SPEED setting can be set 9600, 19200, or 38400 bps. If you set it to 38400, it will disable Port 2. Port 3 will still operate at 9600 or 19200 bps. The CTS1 setting should be set to Deasserted. This will deassert the control lines on the SEL-3031. Some protocols in devices require the control line to be in a high or low state to permit proper communication. For example, with DNP3, some remote devices will not reply back to the master until the control line is deasserted. If the control line is asserted the DNP3 device is told to wait. Again, this setting is based upon how the vendor implemented flow control in the devices. For most all SEL products this setting should always be set to Deasserted. On Port 1 of each radio, install an SEL-C285 cable to the IED. As an alternative, the SEL-3031 can be ordered with a fiber-optic serial port that works with SEL-2812 transceivers. If you use the fiber port on the SEL-3031, the connection at the IED needs to be an SEL-2812MR transceiver or compatible built-in port. Date Code 20211103 SEL-3031 Instruction Manual 3.8 Job Done Examples Using an SEL Information Processor to Collect Relay Status and Measurements SEL-300 Series Settings The required settings for the SEL-351 are shown in Figure 3.9. These settings are similar to all of the SEL-351, SEL-311, and SEL-700 series of relays. To establish a communications link via the radio, the most critical settings are PROTO, SPEED, BITS, PARITY, STOP, and RTSCTS.

=>>SHO P 2 <Enter>

Port 2 PROTO = SEL SPEED = 19200 BITS = 8 AUTO = Y T_OUT = 10 PARITY= N RTSCTS= N STOP = 1 FASTOP= Y

Figure 3.9 SEL-351 Port Settings for Fast Messaging Set AUTO = Y if you want the relay to send automatic messages to indicate specific conditions. Set FASTOP = Y if you want the communications processor to issue control commands to the relay. SEL-2032/SEL-2030 Settings The following steps demonstrate on how to set SEL-2032 to initially connect and configure an SEL-351 Relay. Step 1. Step 2. Use the SEL-C285 cable to connect one of the SEL-2032 ports; this example uses Port 2 to Port 1 of the SEL-3031. Enter Access Level 2 on the SEL-2032 and issue the SET P 2 command to configure Port 2. The SEL-2032 prompts for the type of device connected to the port. a. b. c. d. Enter S for the SEL IED. Enter Y to autoconfigure the port. Press the <Enter> key to confirm the configuration prompts. The SEL-2032 establishes communication with the relay;

determines the type of relay, relay ID, and communications data rate; and determines if the relay is capable of Fast Meter. Enter Y to save port configuration changes at the final prompt. Step 3. Issue the AUTO 2 command to see what Fast Message features are supported by the SEL-351S. Figure 3.10 shows an example output for the AUTO command. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples Using an SEL Information Processor to Collect Relay Status and Measurements 3.9

*>>AUTO 2 <Enter>

FID: FID=SEL-351S-7-R106-V0-Z003003-D20010110 DEVICE ID: FEEDER 1 BAUD RATE: 19200 OPERATE SUPPORT: Binary (1 Breakers, 16 Remote Bits S-C-P) LEVEL 1 PASSWORD: OTTER COMMANDS SUPPORTED:

B 20METER B 20DEMAND B 20TARGET A 20HISTORY A 20STATUS A 20EVENT A 20EVENTS A 20EVENTL

Figure 3.10 Example AUTO Command Output The AUTO command verifies initial configuration is set up. Refer to the SEL-2032 Instruction Manual for more information on setting up Fast Messaging. Date Code 20211103 SEL-3031 Instruction Manual 3.10 Job Done Examples Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol Figure 3.11 SEL-3031 Point-to-Multipoint Example The SEL-3031 is designed to work in P2P (Point-to-Point) and P2MP (Point-to-

Multipoint) modes. In P2MP mode Port 1 is the only active port. Port 2 and Port 3 are disabled in this mode. This example will show how to setup a P2MP radio connection where there is one radio at the master location connected to an SEL-3530 RTAC and the other end will be three or more remote radios connected to SEL-651R recloser controls. The protocol used in this example is DNP3. In P2MP mode, the radio works with most multidrop addressable protocols, including MODBUS. The radios set in P2MP mode operate by allowing the master to send information to all of the remotes. Only the remote that is connected to the IED (SEL-651R) with the correct SCADA address will respond back to the master. Data will collide if the remote is not set up correctly where two remotes share the same address or sending unsolicited data. All remote radios have the ability to transmit data to the master and the protocol addressing determines which remote should respond to the master. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol 3.11 SEL-3031 Settings The SEL-3031 requires very few settings to set up the radios. This example assumes the radios have been set up and are currently linked. You should use an SEL-C285 cable to connect the SEL-3031 to the SEL-3530 RTAC and SEL-651R. If you are having problems setting up the radio link, refer to Section 2: Installation and Section 5:

Performance Monitoring, Testing, and Troubleshooting for more information. Figure 3.12 Radio Settings for Point-to-Multipoint In the Radio Settings, the NETARCH setting must be set to P2MP. The P2MP mode disables Port 2 and Port 3 and allows multiple remote radios to connect to one master. The MODE setting must be set to MASTER for the radio located at the master location connected to the RTAC. All of the remote radios must have this setting set as REMOTE. The rest of the Radio Settings can be left to default. NOTE: You must set the TXPWR correctly to stay in compliance with the FCC and IC with a maximum allowed 36 dBm EIRP transmitted signal. See Transmitted Signal on page 2.3 for more information. Date Code 20211103 SEL-3031 Instruction Manual 3.12 Job Done Examples Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol Figure 3.13 Port 1 Settings for Point-to-Multipoint Figure 3.13 shows the correct settings needed for creating a DNP channel for P2MP. The PROTO setting should be set to STANDARD. Setting the PROTO to Standard allows all byte-oriented multidrop protocols to pass through the port. If you are using MODBUS, set PROTO to MODBUS. Leave the ARQ setting to Y. In P2MP mode, this allows the message being sent from the remote to the master to retransmit on error. In P2MP mode, this will not allow the master transmit message to retransmit on error. The SPEED setting can be set for 9600, 19200, or 38400 bps. It is preferred to set this to 38400 to take advantage of higher throughput to reduce the overall polling time. If any of the end devices do not support 38400, the whole system must be set down to 9600 or 19200 bps. The CTS State should be set to DEASSERTED by default. Setting to deasserted allows proper communication with most SEL devices. If the remote device is not responding to DNP messages, this setting may need to get set to ASSERTED. Most DNP devices look at the CTS line and will not send the DNP message unless the CTS line is in an asserted or deasserted state. This setting allows you to set the line high or low to always give the device permission to transmit. SEL-3530 RTAC Settings To properly set the RTAC it is best to review the SEL-3530 manual under Section 4:

DNP3. This section explains how to setup a DNP3 connection. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol 3.13 Figure 3.14 SEL-3530 RTAC DNP3 Settings Once a DNP port is set on the RTAC to a Client-Multidrop Serial a list of settings are shown in Figure 3.14. One of these devices must be set for each remote SEL-651R on the system. The Client DNP Address in the example is set to 1000. This is the address of the RTAC DNP master. All devices set up on the RTAC must be set to communicate to the same master address. Similarly, on the SEL-651R all settings for REPADR should be set to 1000. The Server DNP Address is the address of the remote SEL-651R device. Each RTAC device must have a unique address. The corresponding DNPADR in the SEL-651R must be set to the same corresponding device. The Integrity Poll and Class polling should be set such that there is enough time to poll all remote devices in the allocated time. The more remote devices that are in a system the longer time is needed for the polling. The Number of Poll Retries in this example is set to 5. The given availability of the radio system will change this setting. If the SEL-3031 has a greater than 95 percent availability and the ARQ in the radio is turned on then you would not expect to see many poll retries. The Baud Rate should be set to 38400 to match the system baud rate. The rest of the settings are either fixed or you can leave as default. Date Code 20211103 SEL-3031 Instruction Manual 3.14 Job Done Examples Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol SEL-651R Settings Figure 3.15 SEL-651R Communications Settings for P2MP The SEL-651R has a minimum of four settings to get the link up and running. There are more settings to determine types and mapping of digital and analog data but are not needed to verify initial operation. This example only demonstrates on how to get the RTAC communicating to the SEL-651R through the SEL-3031 in P2MP mode. Figure 3.15 shows the first setting needed in the SEL-651R. The settings are needed in all remote SEL-651R units communicating to the RTAC. The PROTO needs to be set to DNP for the current protocol used. The SPEED needs to be set to 38400 to match the system baud rate. The rest of the settings in this group can be left as default. Figure 3.16 shows the settings for the DNP port set in the SEL-651R. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples Setting Up a Point-to-Multipoint Link Using DNP3 SCADA Protocol 3.15 Figure 3.16 SEL-651R DNP Port Settings for P2MP The DNPADR is set to 100 in this example. Each remote SEL-651R must be set to a unique address. This corresponding address must match the RTAC device address called Server DNP Address. The REPADR is set to 1000 in this example. This is the address the SEL-651R is to report back to, otherwise called the master address. All remote SEL-651R units should be set to the same master address. All the other settings can be left as default and are not needed for initial configuration. If a different type or class of event data is needed, then more of these settings need to be changed along with settings in the RTAC. This is not covered under the scope of this example. Verifying Proper Operation Once all the settings in the SEL-3031 radios, RTAC, and SEL-651R are set correctly, the next step is to verify proper operation. Easily check this by looking at the master SEL-3031 Tx and Rx LEDs on Port 1. If the Tx LED illuminates, and the Rx LED illuminates shortly after, the link is up and working. If you only see the Tx LED illuminate and not the Rx LED illuminate you either have a problem with the settings in the radio, settings problem on the SEL-651R, or you are using the wrong cable. You can also review the data LED at each remote location. These LEDs will help troubleshoot the problem. If you do not see the Tx LED on the master radio illuminating then you are either using the wrong cable or do not have the correct settings in the RTAC. Date Code 20211103 SEL-3031 Instruction Manual 3.16 Job Done Examples Configuring Collocated Antennas Using SEL Hop-Sync Technology Configuring Collocated Antennas Using SEL Hop-Sync Technology There are radio applications that require multiple links at one location. Using multiple antennas at one location operating at the same frequency band causes interference issues with adjacent placed antennas. To improve the dependability when using collocated antennas the radio comes with SEL Hop-Sync technology. SEL Hop-Sync technology allows you to connect collocated antennas together and synchronizes all the radios connected so they hop at the exact same time. This greatly reduces adjacent channel noise and allows each radio to receive data without interference from the adjacent antennas. There are three applications where collocated antennas are typically applied. 1. 2. 3. Setting up a repeater location where two back-to-back radios are used. Setting up two links going to and from the same location as a primary/backup radio installation. Creating two or more links from a central location going to separate locations. This example will show how to set up collocated antennas in a repeater location using MIRRORED BITS communications. Once you understand how to setup up collocated antennas applications 2 and 3 can be easily extrapolated. See Collocated Antenna Systems on page 2.8 for more information. Figure 3.17 Setting up Collocated Antennas at a Repeater Location Figure 3.17 is the connection diagram with the cables and antennas needed for this application. This example uses two SEL-311C relays communicating MIRRORED BITS over the radio link. The line of site between location 1 and 2 is obstructed by a hill. A repeater location is set up to transmit around the hill. SEL-3031 Instruction Manual Date Code 20211103 Job Done Examples Configuring Collocated Antennas Using SEL Hop-Sync Technology 3.17 SEL-311C and SEL-3031 Settings at Location 1 and 2 The SEL-311C serial port needs to be set to MB8 MIRRORED BITS protocol. Follow the job done Example 1 to configure the SEL-311C and the SEL-3031 radios located at Location 1 and Location 2. SEL-3031 Settings at Repeater Location Set the two collocated SEL-3031 radios at the repeater location with settings similar to the radios at Location 1 and 2. Set the radio at the Repeater location that is communicating to Location 1 the same as the setting of the SEL-3031 at Location 2. Do the same for SEL-3031 at the Repeater location communicating to Location 2 set the same as the SEL-3031 at Location 1. This setup will start as two independent P2P links. At the repeater location use an SEL-273A cable to connect Port 1 on each radio. This setup should allow the repeater link to pass information to the next radio and the relays should be communicating MIRRORED BITS. This link will work adequately if the repeater antennas are placed far enough apart to prevent the adjacent antenna from interfering. To improve this link and to allow the antennas to be placed closer you will need to synchronize the radios. Synchronizing the Radios at the Repeater Location To synchronize the system, we need to synchronize the radios at the repeater location so that the collocated radios transmit and receive at the same time. To do this you must connect an SEL-273A cable between Port 3 of the radios at the repeater location. The radios will use Pin 7 and Pin 8 in the communications cable to synchronize each other. The last step to synchronizing radios is to set the SYNC setting in each of the radios at the repeater location. You must make one radio the master SYNC SEND and the other a master SYNC RECEIVE. Date Code 20211103 SEL-3031 Instruction Manual 3.18 Job Done Examples Configuring Collocated Antennas Using SEL Hop-Sync Technology Figure 3.18 SYNC Settings for Master Radio Figure 3.18 shows the settings for the master radio at the Repeater location. The SYNC setting for this device must be set to SEND. This tells the radio to generate a pulse to synchronize connected radios. On the second master radio at the Repeater location you must set SYNC to RECEIVE. SEL-3031 Instruction Manual Date Code 20211103 A.2 Firmware and Manual Versions Instruction Manual Table A.1 Firmware Revision History (Sheet 2 of 2) Firmware Identification

(FID) Number Summary of Revisions Manual Date Code Fixed an issue in the SEL-3044 where the rollover of the encryption key could get repeated indefinitely and cause com-

munications to stop. Fixed an issue in the SEL-3044 where the master could receive a repeated mes-

sage from the radio that should have been dropped, causing the SEL-3044 to stop processing incoming data. Fixed issue that prevented the encryp-

tion card from rekeying under certain conditions, which also stopped commu-

nication. Created Brazil frequency compatible version. Added 9600 bps speed setting option to all ports in radios without encryption cards. 20110818 This firmware version was not produc-

tion released. Added P2MP capability. Added the capability to synchronize col-

20101108 located radios. Added ARQ for non-MIRRORED BITS applications. Improved the STA command with more Firmware Version:

SEL-3031-R103-V0-Z003001-

D20110818 FPGA Version:

SEL-3031-R101-D20101018 Note: You must update both firmware and FPGA for proper operation. Firmware Version:

SEL-3031-R102 Firmware Version:

SEL-3031-R101-V0-Z002001-

D20101108 FPGA Version:

SEL-3031-R101-D20101018 Note: You must update both firmware and FPGA for proper operation. radio information. Added 38400 bps option on Port 1

(19200 bps with Encryption Card). SEL-3031-R100-V0-Z001001-

D20091009 Initial version. 20091009 Instruction Manual The date code at the bottom of each page of this manual reflects the creation or revision date. Table A.2 lists the instruction manual versions and revision descriptions. The most recent instruction manual version is listed first. SEL-3031 Instruction Manual Date Code 20211103 Firmware and Manual Versions Instruction Manual A.3 Table A.2 Instruction Manual Revision History (Sheet 1 of 4) Date Code Summary of Revisions 20211103 Section 1 Updated Table 1.2: Certifications by Country. Section 2 Updated Radio Interference. 20210820 Section 1 Updated Compliance in Specifications. Appendix C Updated NIST FIPS 140-2 Level 2 Security Requirements. 20210715 Section 1 Updated EMC Emissions in Specifications. 20191219 Section 1 Updated mounting options information in Features, Benefits, and Applications. 20190214 Section 1 Updated Table 1.1: Radio Antenna and Cable Accessories. Updated language on FIPS 140-2 Level 2 revalidation. Appendix C Updated language on FIPS 140-2 Level 2 revalidation. 20181011 Section 1 Updated Table 1.1: Radio Antenna and Cable Accessories. Updated Figure 1.3: Radio Antenna Connections. 20181001 Section 1 Updated Specifications. 20180613 Section 1 Updated Table 1.1: Radio Antenna and Cable Accessories. Section 2 Updated Table 2.2: Antennas Permitted for Use with the SEL-3031. Section 4 Updated Table 4.14: Factory-Default Passwords. Updated Table 4.18: SER Command. 20180330 Section 1 Updated Compliance in Specifications. Appendix B Updated Technical Support. 20160804 Section 1 Updated Table 1.1: Radio Antenna and Cable Accessories. Date Code 20211103 SEL-3031 Instruction Manual A.4 Firmware and Manual Versions Instruction Manual Table A.2 Instruction Manual Revision History (Sheet 2 of 4) Date Code Summary of Revisions 20160203 General Updated cable information to include RG-8X. Section 1 Updated Table 1.1: Radio Antenna and Cable Accessories. 20150203 Preface Updated Safety Information. Section 1 Updated Table 1.1: Radio Antenna and Cable Accessories. Added Figure 1.1: Radio Antenna Connections. Changed Certifications to Compliance, and moved it to the beginning of Specifications. Added Power Consumption With SEL-3044 Card in Specifications. Updated Table 1.2: Government Approvals. Section 2 Updated Figure 2.6: SEL-C693 Cable: Two-Wire EIA-485 Connections. Section 4 Added CAL Level information. Section 5 Updated fade margin and radio availability information in Monitoring and Improving Radio Link Performance. Appendix A Updated Table A.1: Firmware Revision History with correct FPGA ver-

sion. 20141120 Section 1 Updated surge protection description and part number in Table 1.1. Section 2 Updated surge protection information in Lightning Protection. 20130208 Section 1 Added UL, cUL, and FIPS 140-2 certification information to Specifica-

tions. 20111228 Appendix A Updated for SEL-3031 firmware version R104. Updated for SEL-3044 firmware version R102. 20111005 Section 1 Added certification information for Colombia to Specifications. Added Brazil ANATEL Numbers to Specifications. SEL-3031 Instruction Manual Date Code 20211103 Firmware and Manual Versions Instruction Manual A.5 Table A.2 Instruction Manual Revision History (Sheet 3 of 4) Date Code Summary of Revisions Section 2 Added Colombia to list of countries allowing six skip zones. 20110818 Section 1 Added 9600 bps SPEED setting option for radios without encryption cards. Updated port speed option and latency tables in Specifications to reflect 9600 bps SPEED setting option for radios without encryption cards. Added certification information for Brazil, Mexico, and Peru to Specifi-

cations. Section 2 Added 9600 bps SPEED setting option for radios without encryption cards. Added 303011Brazil locked skip frequencies. Added Table 2.4: 900 MHz Frequency Skip Zones for Brazil (part num-

bers starting with SEL-30311). Section 3 Added 9600 bps SPEED setting option for radios without encryption cards. Section 4 Added 9600 bps SPEED setting option for radios without encryption cards. Added 303011Brazil locked skip frequencies. Added Table 4.6: Skip Zone Frequencies (SEL-30311 Brazil). Appendix A Updated for firmware version R103. 20101108 Section 1 Added P2MP capability to product features. Included additional antenna accessories in Table 1.1: Radio Antenna and Cable Accessories. Section 2 New SEL Sync-Hop for collocated radios. Updated Table 2.9: SEL-3031 Port Description for Port 3 radio syn-

chronizing capability. Added Figure 2.12: SEL Cable C576: Synchronizing Cable for SEL-3031, new cables for synchronizing radios. Section 3 Added two more Job Done examples. Date Code 20211103 SEL-3031 Instruction Manual A.6 Firmware and Manual Versions Instruction Manual Table A.2 Instruction Manual Revision History (Sheet 4 of 4) Date Code Summary of Revisions Section 4 Added P2MP capability to product features. Updated Figure 4.9: Radio Strength and Channel Availability with new graphical Radio Status. Updated Table 4.4: Radio Settings with P2MP and synchronizing set-

tings. Added information on SYNC and KEY settings. Updated Table 4.6: Port Settings with SPEED and ARQ. Appendix A Updated for firmware version R101. Appendix B Added Firmware Upgrade Instructions. 20091009 Initial version. SEL-3031 Instruction Manual Date Code 20211103 Appendix B Firmware Upgrade Instructions Overview SEL may occasionally offer firmware upgrades to improve the performance of your radio. The radio stores firmware in Flash memory; therefore, changing physical components is not necessary. A firmware loader program called SELBOOT resides in the SEL-3031. These instructions give a step-by-step procedure to upgrade the radio firmware by uploading a file from a personal computer to the radio via direct connection to the USB management port. Required Equipment You will need the following to perform a firmware upgrade. Personal computer Terminal emulation software that supports the Xmodem/CRC protocol (these instructions use HyperTerminal from a Microsoft Windows operating system) USB Type-B cable (SEL-C664 or equivalent) The firmware upgrade file (Rxxx3031.img) Firmware Upgrade Procedure Step 1. Connect a standard USB Type-B cable from the PC to the management port of the SEL-3031, and enter Access Level 2. a. b. c. d. Type ACC <Enter>. Enter the Access Level 1 password. Type 2AC <Enter>. Enter the Access Level 2 password. Step 2. Start the upgrade process. a. b. Issue the L_D command to the radio. Type Y <Enter> at the following prompt:

Disable device to receive firmware (Y,N) ?

Date Code 20211103 SEL-3031 Instruction Manual B.2 Firmware Upgrade Instructions Overview c. Type Y <Enter> at the following prompt:

Are you sure (Y, N)?

The radio will respond with the following message and send the !>

prompt. Device disabled Step 3. Step 4. Issue the BAU 115200 command. On your terminal or computer terminal program, change the terminal data rate to 115200 bps. Begin the transfer of the new firmware to the radio by issuing the REC command. Step 5. Type Y to erase the existing firmware, or press <Enter> to abort. Step 6. Start the file transfer. a. b. Select the send file option in your communications software. Use the Xmodem or 1K Xmodem protocol and send the file that contains the new firmware. After the file transfer, the radio reboots and returns to Access Level 0. Change the terminal data rate back to 9600 bps to access the radio management port. Step 7. Press any key (e.g., <Enter>) when the radio sends a prompt. Step 8. Type ACC <Enter>. Enter the Access Level 1 password.

=>>L_D <Enter>

Disable device to receive firmware (Y,N) ? <Enter>

Are you sure (Y/N) ? Y <Enter>

Device disabled

!>REC <Enter>

Caution! This command erases the firmware. If you erase the firmware then new firmware must be loaded before returning the IED to service. Are you sure, you want to erase the existing firmware (Y/N)?

Y <Enter>

Erasing firmware. Erase successful. Press any key to begin transfer and then start transfer at the terminal. SEL-3031 Instruction Manual Date Code 20211103 Firmware Upgrade Instructions Overview B.3 Step 9. Issue the STA command, and examine the status report for FAIL messages. If the status report shows a FAIL message, perform the following steps. a. b. c. d. e. f. g. h. i. Type 2AC <Enter>. Enter the Access Level 2 password. Type R_S <Enter>. At this time, you must reenter passwords. Type ACC <Enter>. Enter the Access Level 1 password Type 2AC <Enter>. Enter the default Access Level 2 password. Use the PAS command to change the default password to your secure password (refer to the SEL-3031 Instruction Manual). Step 10. Turn the radio off and back on. This completes the firmware upgrade instructions. If you have an FPGA configuration upgrade, continue with the following procedure. FPGA Configuration Upgrade Procedure Step 1. Connect input power. Step 2. Connect a standard USB Type-B cable from the PC to the management port of the SEL-3031, and enter Access Level 2. Step 3. Start upgrading of firmware. a. b. Issue the L_D command to the radio. Type Y <Enter> at the following prompt:

Disable device to receive firmware (Y,N) ?

c. Type Y <Enter> at the following prompt:

Are you sure (Y, N)?

The radio will respond with the following message and send the !>

prompt. Device disabled Date Code 20211103 SEL-3031 Instruction Manual B.4 Firmware Upgrade Instructions Overview Step 4. Step 5. Issue the BAU 115200 command, and change the terminal data rate to 115200. Begin the transfer of the new FPGA configuration file

(RTL_Rxxx3031.cxf) to the radio by issuing the REC FPGA command. Step 6. Type Y to erase the existing FPGA configuration or press <Enter> to abort. Step 7. Press any key (e.g., <Enter>) when the radio sends a prompt. Step 8. Start the file transfer. a. b. Select the send file option in your communications software. Use the Xmodem protocol and send the file that contains the new firmware. After the file transfer, the radio will reboot and return to Access Level 0. Step 9. The FPGA upgrade will cause the radio to restart (equivalent to removing and restoring power). On most PCs, you will need to exit and restart the terminal program for it to re-recognize the serial port. Change the terminal data rate back to 9600 bps to access the radio management port.

=>>L_D <Enter>

Disable device to receive firmware (Y,N) ? Y <Enter>

Are you sure (Y/N) ? Y <Enter>

Device disabled

!>REC FPGA <Enter>

Caution! This command erases the FPGA. Do not interrupt power during FPGA upload or the device may require factory reprogramming. Are you sure you want to erase the existing FPGA (Y/N)? Y <Enter>

Press any key to begin transfer and then start transfer at the terminal. Completed FPGA configuration upload into RAM. Beginning FPGA reconfiguration. Erasing FPGA ... (15 seconds) ... Done. Configuring FPGA. 37 ..................................................................... 36 ..................................................................... 35 ..................................................................... 34 ..................................................................... 33 ..................................................................... 32 ..................................................................... 31 ..................................................................... 30 ..................................................................... 29 ..................................................................... 28 ..................................................................... 27 ..................................................................... 26 ..................................................................... 25 ..................................................................... 24 ..................................................................... 23 ..................................................................... 22 ..................................................................... 21 ..................................................................... 20 ..................................................................... 19 ..................................................................... 18 ..................................................................... SEL-3031 Instruction Manual Date Code 20211103 Firmware Upgrade Instructions Technical Support B.5 17 ..................................................................... 16 ..................................................................... 15 ..................................................................... 14 ..................................................................... 13 ..................................................................... 12 ..................................................................... 11 ..................................................................... 10 ..................................................................... 9 ..................................................................... 8 ..................................................................... 7 ..................................................................... 6 ..................................................................... 5 ..................................................................... 4 ..................................................................... 3 ..................................................................... 2 ..................................................................... 1 ..................................................................... FPGA Configuration complete................ The SEL-3031 now is ready for commissioning. Technical Support We appreciate your interest in SEL products and services. If you have questions or comments, please contact us at:

Schweitzer Engineering Laboratories, Inc. 2350 NE Hopkins Court Pullman, WA 99163-5603 USA Telephone: +1.509.338.3838 Fax: +1.509.332.7990 Internet: selinc.com/support Email: info@selinc.com Date Code 20211103 SEL-3031 Instruction Manual This page intentionally left blank Appendix C SEL-3044 Encryption Card Overview The SEL-3044 Encryption Card is a standalone card that can be added to the SEL-3031 to encrypt the radio data being sent between SEL-3031 radio links. The SEL-3044 can be ordered at time of purchase or added as an upgrade. The SEL-3044 requires one setting to provide a very strong level of encryption over the radio link. Use of the SEL-3044 is strongly advised for any application of the SEL-3031 for critical data. If you do not use the SEL-3044, the data between the radios can be compromised. If you want to encrypt the radio link, an SEL-3044 is required in both radios. NOTE: The SEL-3044 is NOT a PCMCIA card. Do not install in a laptop computer. Figure C.1 SEL-3044 Encryption Card NIST FIPS 140-2 Level 2 Security Requirements The National Institute of Standards and Technology (NIST) developed the Federal Information Processing Standards (FIPS) 140-2 standard that defines the security requirements for a cryptographic module used within a security system protecting sensitive information in computer and telecommunications systems. Date Code 20211103 SEL-3031 Instruction Manual C.2 SEL-3044 Encryption Card Theory of OperationSEL Protocol Protection of a cryptographic module within a security system is necessary to maintain the confidentiality and integrity of the information protected by the module. FIPS 140-2 Level 2 covers areas related to the secure design and implementation of a cryptographic module. These areas include the following:

Cryptographic module specification Cryptographic module ports and interfaces Roles, services, and authentication Finite state model Physical security Operational environment Cryptographic key management Electromagnetic interference/electromagnetic compatibility

(EMI/EMC) Self-tests Design assurance Mitigation of other attacks The SEL-3044 meets FIPS 140-2 Level 2 historical. This level of data security provides assurance that best practices have been applied to the design, testing, and manufacturing of the SEL-3044. Theory of OperationSEL Protocol Encryption Components A cryptographic device consists of three components: encryption algorithm, key management, and device security functions. Encryption Algorithm The Advanced Encryption Standard (AES) algorithm with a key length of 256 bits is implemented in the SEL-3044. This algorithm is a secure means of encrypting data. The AES algorithm and key length provide proven resistance to modern cryptanalysis. SEL-3031 Instruction Manual Date Code 20211103 SEL-3044 Encryption Card Theory of OperationSEL Protocol C.3 Key Management System key (256 bits): The system key is set by a passphrase of 8 to 80 characters. The passphrase is used to generate a system key. The system key is used to encrypt and securely transmit unique session keys (see following text). It also provides a cryptographic authentication mechanism for rejecting session requests by unauthorized SEL-3044 devices. Session key (256 bits): Session keys are used to encrypt all protected user data prior to transmission. They are produced at system startup and periodically during sessions. Session keys are generated using the process outlined by FIPS 186-2. They are produced using an integrated physical random number generator (RNG) and a statistical data whitening algorithm. Session keys are purely random and are not linked to the system key. The use of unique session keys limits the amount of data that is encrypted with a single key value, thus strengthening the system against cryptanalytical attack. The session keys are encrypted using the system key prior to being exchanged between SEL-3044 devices. Device Security The SEL-3044 incorporates a hardware RNG and FIPS-approved data whitener to guarantee that all session keys contain 256 bits of entropy (i.e., completely random). This guarantees that encoded messages are protected by a true cryptographic strength of 256 bits. Multilevel password authentication defines user security roles. Changing the system key can only be performed by authorized users who have Access Level 2 passwords. If required, an authorized user can reset the entire device. This allows the user to reinitialize the system key should the security parameters need to change because of IT security procedures or if the programmed system key value is lost. NOTE: This process requires physical access to the SEL-3031 and cannot be done remotely. Security of the Transferred Data The SEL-3044 provides data encryption with a cryptographic key strength of 256 bits. The SEL-3044 RNG is designed so that all possible key values are equally likely. It is widely accepted throughout the cryptographic community that it is not realistically possible to mount a successful brute force (key guessing) attack on a 256-bit key space with technology available today. Date Code 20211103 SEL-3031 Instruction Manual C.4 SEL-3044 Encryption Card Theory of OperationSEL Protocol Application Consideration Two messaging structures exist to establish and maintain a secure, coherent communications link between two SEL-3044 devices: In-Band (IB) frames and Out-of-

Band (OOB) frames. IB frames transmit encrypted user data (i.e., data received on the trusted data interface) between the two protected devices (computer, IED, RTU, etc.). OOB frames transmit connection control data between the two SEL-3044 devices in the communications link. Control frames are required to implement key exchanges, status checks, and other functions necessary to maintain the communications link. In-Band Message Format IB messages consist of the encrypted data plus the frame overhead necessary to maintain synchronization and channel security. Figure C.2 shows the format of an IB frame. The shaded area is the encrypted data portion of the message. Maximum of 7 Bytes User-Defined Frame Length IB Header Protected Data Figure C.2 In-Band Data Packet Format Out-of-Band Message Out-of-Band (OOB) messages are used to exchange control information between SEL-3044 cards. These exchanges include loss of synchronization, request for rekey, and rekey information. IMPORTANT: During OOB message communication, data exchange between the devices connected to the SEL-3044 cannot occur. Communication will be temporarily halted during a rekey. System Settings The system key provides encryption and secure transmission of unique session keys between SEL-3044 devices. It also provides a cryptographic authentication mechanism for rejecting session requests by unauthorized devices. Session keys provide encryption of all protected user data prior to transmission. An SEL-3044 produces session keys at system startup, and periodically during sessions, using the process outlined by FIPS 186-2. An integrated physical RNG and statistical data-whitening algorithm generate purely random session keys. Through the use of these unique session keys, the SEL-3044 limits the amount of data encrypted by any single key value, thus strengthening the system against attack. SEL-3031 Instruction Manual Date Code 20211103 SEL-3044 Encryption Card Theory of OperationSEL Protocol C.5 NOTE: Both SEL-3044 transceivers that communicate with each other must share the same system key. AES Overview The AES encryption function uses a 256-bit-long secret key and scrambles the contents of each frame prior to transmission to provide cryptographically strong data confidentiality. Encryption is the process of transforming a digital message from its original form into a form that an unauthorized individual cannot interpret. The output of the encryption process is a function of the message and an encryption key (see Figure C.3). Encryption Key Decryption Key Hi Bob!

AES Encrypt

*4gu>g aIL8}2=h AES Decrypt Hi Bob!

Figure C.3 Operation of the AES Encryption Function This encryption process must be completely reversible by an authorized individual with access to the secret decryption key. Authority to read a message is only granted by sharing knowledge of the secret decryption key. Ideally, only individuals with knowledge of the decryption key can reverse the encryption operation and interpret the protected message. There are two main classes of encryption functions. Symmetric key encryption relies on the same secret key value, K, to perform both the encryption and decryption transformations. Asymmetric key encryption, on the other hand, uses a different key for encryption and decryption for example, asymmetric encryption might use K1 for encryption and K2 for decryption. The AES encryption algorithm the SEL-3044 uses is a symmetric block cipher with an encryption/decryption key size of 256 bits. The AES is the latest encryption standard adopted by NIST. In 1997, NIST challenged the cryptographic community to develop the next generation encryption algorithm to replace the aging DES and 3DES encryption standards. In 2000, NIST chose the Rijndael encryption algorithm as the AES encryption standard. During the evaluation of candidates for the AES standard, some of the worlds best cryptanalysts analyzed and approved Rijndael. Since its adoption in 2001, AES has proven to be very effective against known attacks, very efficient, and simple to implement. Date Code 20211103 SEL-3031 Instruction Manual C.6 SEL-3044 Encryption Card Theory of OperationSEL Protocol Frame Replay Protection Every frame in a given session contains a sequence number field. The value in this field increments every time a frame is transmitted. The SEL-3044 will not accept any frame that contains a sequence number value that is less than, or equal to, the sequence number value received in the last frame. It is exceedingly difficult to maliciously alter the sequence number in any given frame to bypass this functionality because the sequence number field is protected by the strong cryptographic authentication mechanisms. Because of the protection these mechanisms provide, an attacker cannot capture a previously transmitted frame and resend the frame to the SEL-3044 to cause harmful actions. Resetting the SEL-3044 At some point, it may be necessary to reset the SEL-3044. You must have access to the front USB port on the SEL-3031. The SEL-3044 must be installed in the SEL-3031 to reset. Use either ACSELERATOR QuickSet SEL-5030 Software or a terminal interface to access the Radio settings. In the Radio settings, set the KEY setting to None, save the setting, then set a new passphrase and save. If you have lost your passwords to access the SEL-3031, you must disable passwords by temporarily installing a jumper. Refer to Password Jumper on page 2.14 and Table 2.7 for information and instructions on disabling passwords. Installing an SEL-3044 in the SEL-3031 The SEL-3044 can be ordered at time of purchase of the radio, or it may be added later as a field upgrade. The process involves powering down the radio, removing hardware, installing the card, and setting the radio. CAUTION The radio contains devices sensitive to Electrostatic Discharge (ESD). When working on the radio with the front or top cover removed, work surfaces and personnel must be properly grounded or equipment damage may result. Step 1. Step 2. Remove the power from the radio and remove all connections from the device. Rack-mount SEL-3031: Loosen the six front-panel screws and remove the front panel. Wall-mount model: Use a Torx T15 screwdriver and remove the four screws located on the sides of each corner. Slide the cover up and back to reveal the front of the unit. Step 3. Between the main board and radio board there is a PCMCIA card slot. Gently slide the SEL-3044 straight into the card slot. Push firmly until it is fully seated. SEL-3031 Instruction Manual Date Code 20211103 SEL-3044 Encryption Card Theory of OperationSEL Protocol C.7 Figure C.4 Encryption Card Location Step 4. Reassemble the unit in reverse order of Step 2. Step 5. Apply power to the unit and verify the SEC light is flashing. The flashing LED indicates that the SEL-3044 is functioning properly and is currently in Reset. If the SEC LED is not flashing, then you must turn off the unit and verify the card is properly seated in the pins. If the SEC LED does not flash upon your removing and restoring power and you have verified that the card is seated properly, you will need to send the radio and encryption card back for repair. Use QuickSet to connect to the device and set the KEY setting to enable the SEL-3044. The KEY setting must be set the same on both SEL-3031 transceivers for proper operation. Step 6. Step 7. Date Code 20211103 SEL-3031 Instruction Manual This page intentionally left blank SCHWEITZER ENGINEERING LABORATORIES, INC. 2350 NE Hopkins Court Pullman, WA 99163-5603 U.S.A. Phone: +1.509.332.1890 Fax: +1.509.332.7990 selinc.com info@selinc.com

The FCC ID and warning are placed on a label on the side of the device. Per eCFR 2.925(d) and 2.925(d)(1), the ID and warning are printed on laminated labels and attached to the enclosure with a permanent adhesive. FCC ID R34SEL-3031R Figure 1: RACK MOUNT, SIDE OF DEVICE

The SEL-3031 data radio, manufactured by Schweitzer Engineering Laboratories, Inc., is marketed by SEL to utility, industrial and commercial customers to provide the quick infrastructure for data communications. It is not marketed or sold to ordinary consumers; Thus, the product is installed by professionals, who will mount the radio, provide power, route the feedline (often with lightning protection), erect towers, and install the antenna. Due to the wide variety of installation situations, installation by a professional using a standard RF connection is necessary. Documents like the User Manual depict a myriad of setups to aid the installer; These documents are locked behind an exclusive login at selinc.com. Webmail domain logins like Gmail, Yahoo, Outlook, etc., and non-SEL approved company domains do not have access to these documents. Antenna Make PCTEL PCTEL Antenna Model BMYD890M MFB9157 SEL Part Number 235-0222 235-0233 Antenna Type YAGI DIPOLE Max Gain (dBi) 14.15 9.15 The data sheets and radiation patterns are provided by the antenna manufacturer below:

Figure 1: BMYD890M Azimuth Figure 2: BMYD890M Elevation PCTEL BLUEWAVE ANTENNAS BMYD890M Series Bluewave Yagi Antennas, 890-960 MHz, 12 dBd Gain The BMYD890M series has been engineered to meet the requirements of a high gain, broadband, premium quality antenna. This antenna has 12 dBd gain and operates in the 890-960 MHz range. The BMYD890M is manufactured using high strength 6061-T6 aluminum to withstand heavy ice, high wind and other harsh conditions. All elements are welded to the boom and the dipole design has an integral feed line welded to the boom for extra strength and electrical conductivity. This eliminates misalignment or fastener problems. The entire antenna is anodized for appearance and corrosion resistance. A heavy duty clamp is supplied which easily permits horizontal or vertical polarization. BMYD890M antenna

(top) with BWC1001 mount (left) Features Elements and boom are manufactured from aircraft quality 6061-T6 aluminum for optimum strength Antenna is anodized for corrosion resistance Antenna is supplied with a 2 pigtail (RG213) and N female connector. Technical Data Maximum Power:

200 watts Nominal Impedance:

50 ohms Radiator Material:

Aluminum 6061-T6 Mounting Method:

Includes mounting hardware BWC1001 Antenna Electrical Speci cations Model Frequency Range

-3 dB Horizonal Beamwidth

-3 dB Vertical Beamwidth Front to Back Ratio Nominal Gain BMYD890M 890-960 MHz 40 34 20 dB 12 dBd Mechanical Speci cations Model Antenna Dimensions*

(L x W) Weight

(Mass) Cross Sectional Area Lateral Thrust

@ 100 mph Rated Wind Velocity**

BMYD890M 37 x 6.6 2.5 lbs 0.35 ft2 8.75 lbs 125 mph Model Elements Cable Type Cable Length Connector Type BMYD890M 11 RG213 2 ft N female

* Dimension does not include antenna cable

**120 mph with 1/2 radial ice (mph) PCTEL, Inc. WEB: www.antenna.pctel.com Figure 3: MFB9157 Azimuth Figure 4: MFB9157 Elevation INFRASTRUCTURE ANTENNAS Omnidirectional MFB Series 800/900 MHz MAXRAD Fiberglass Base Station (MFB) Omnidirectional Antennas The MFB 900/800 MHz series are base matched half wave antennas encapsu-

lated in heavy duty berglass radomes with a thick walled aluminum mounting base for reliable long term use. All models are DC grounded and UPS ship pa ble. Features White ultra-violet resistant pultruded berglass radome Thick walled aluminum mounting base Unity/3 dB/5 dB/7 dB models UPS shippable Factory tuned MFB9155 Technical Data Maximum Power: 150 watts Normal Impedance: 50 ohms Radome Material: 1.0 OD pultruded white berglass MMK3 MMK1 Radiator Material: Coated steel wire ESD Protection: DC grounded Wind Survival: 100 mph Termination:

Unity and 3 dB models, N Female Mounting Base Diameter: 1-5/16 Mounting Method:

Mast or wall mounted. Mounting hardware is sold separately. MMK1: light duty mast mount for antennas under 30 MMK3: light duty mast mount for antennas over 30 MMK4: heavy duty mast mount MMK9: Aluminum mast mount for 1-5/16 OD antennas MBSWM: wall mounting bracket for antennas over 30 (two are required) MMK12: heavy duty mount bracket MMK4 MMK9 MBSWM MMK12 PCTEL, Inc. WEB: www.antenna.com 119 INFRASTRUCTURE ANTENNAS Omnidirectional MFB Series RF/Electrical Speci cations Model MFB8133 MFB8135 MFB8583 MFB8585 MFB8353 MFBW8903 MFBW8905 MFB8963 MFB8965(NF) MFB9387 MFB8967(NF) MFB9153 MFB9155(NF) MFB9155RPC MFB9157(NF)*

Frequency Range Factory Tuned Frequency 806-866 MHz 806-866 MHz 806-866 MHz 806-866 MHz 824-896 MHz 890-960 MHz 890-960 MHz 896-940 MHz 896-940 MHz 896-940 MHz 896-940 MHz 902-928 MHz 902-928 MHz 902-928 MHz 902-928 MHz 813 MHz 813 MHz 858 MHz 858 MHz 835 MHz N/A N/A 898 MHz 898 MHz 938 MHz 898 MHz 915 MHz 915 MHz 915 MHz 915 MHz Gain 3 dB 5 dB 3 dB 5 dB 3 dB 3 dB 5 dB 3 dB 5 dB 7 dB 7 dB 3 dB 5 dB 5 dB 7 dB Bandwidth

@ 1.5:1 VSWR Vertical Beamwidth

@ 1/2 Power 30 MHz 20 MHz 30 MHz 20 MHz 30 MHz 70 MHz 70 MHz 30 MHz 20 MHz 20 MHz 20 MHz 20 MHz 20 MHz 20 MHz 20 MHz 40 22 40 22 40 40 22 40 22 17 17 40 22 22 17 Mechanical Speci cations Model Height Weight (Mass) Bending Moment at Rated Wind Lateral Thrust at Rated Wind Equivalent Flat Plate Area MFB8133 MFB8135*

MFB8583 MFB8585*

MFB8353 MFBW8903 MFBW8905 MFB8963 MFB8965*

MFB9387*

MFB8967*

MFB9153 MFB9155(NF)**

MFB9155RPC MFB9157 (NF)*

26 48 26 48 26 23 48 26 48 96 96 23.25 48 48 96 1.25 lbs 1.75 lbs 1.25 lbs 1.75 lbs 1.25 lbs 1.25 lbs 1.75 lbs 1.25 lbs 1.75 lbs 4.00 lbs 4.00 lbs 1.25 lbs 1.75 lbs 1.75 lbs 4.00 lbs 4.7 ft-lbs 14.2 ft-lbs 4.7 ft-lbs 14.2 ft-lbs 4.7 ft-lbs 4.7 ft-lbs 14.2 ft-lbs 4.7 ft-lbs 14.2 ft-lbs 62.5 ft-lbs 62.5 ft-lbs 4.7 ft-lbs 14.2 ft-lbs 14.2 ft-lbs 62.5 ft-lbs 4.3 lbs 8.0 lbs 4.3 lbs 8.0 lbs 4.3 lbs 4.3 lbs 8.0 lbs 4.3 lbs 8.0 lbs 15.8 lbs 15.8 lbs 4.3 lbs 8.0 lbs 8.0 lbs 15.8 lbs

.12 sq ft

.22 sq ft

.12 sq ft

.22 sq ft

.12 sq ft

.12 sq ft

.22 sq ft

.12 sq ft

.22 sq ft

.44 sq ft

.44 sq ft

.12 sq ft

.22 sq ft

.22 sq ft

.44 sq ft 120 PCTEL, Inc. WEB: www.antenna.com

To Whom it May Concern, Schweitzer Engineering Laboratories, Inc. is seeking an original approval for 47 CFR 15.247 certification for a device containing an Analog ADF7020 transceiver operating within the ISM band between 902 MHz and 928 MHz. Schweitzer Engineering Laboratories, Inc. also attests that the device meets the antenna connector requirements of 47 CFR 15.203. FCC ID:

Product:

Model:

EUT Type:

R34SEL-3031R SEL-3031 Serial Radio Transceiver SEL-3031 Frequency hopping intentional radiator Sincerely, Date: December 21, 2022 William Morse Senior Compliance Engineer Schweitzer Engineering Laboratories 2350 NE Hopkins Court Pullman, WA 99163 Phone: +1(509) 339-1420 Email: bill_morse@selinc.com

Request for Confidentiality Letter-FCC To Whom it May Concern, Schweitzer Engineering Laboratories, Inc. hereby respectfully requests that under the provision of 47 CFR 0.459 and 0.457(d), the documents listed below and attached with this application for certification be provided with confidential status. Schematics Operational Description. Frequency Block Diagrams Bill of Materials Any exhibit / information for which we have requested confidentiality, but which may not be accorded such treatment by the FCC, should be returned to applicant. The documents listed above contain trade secrets that are treated as confidential by the applicant. Substantial competitive harm to the applicant could result should they be made available to the public. The applicant also requests Short-Term Confidentiality per FCC KDB 726920 for the following documents for a period of 180 days from the date of the Grant of Equipment Authorization. Test Setup Photos Users manual Sincerely, Date: December 21, 2022 William B Morse Senior Compliance Engineer Schweitzer Engineering Laboratories, Inc. 2350 NE Hopkins Court Pullman, WA 99163 Phone: +1(509) 339-1420 Email: bill_morse@selinc.com