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SEL-700G
Generator Protection Relay
The SEL-700G is the right solution for utility and industrial generator protection, with an autosynchronizer, flexible I/O, and advanced communications. It provides a complete protection and synchronization solution for synchronous generators, so you can eliminate the complexity and cost of standalone synchronizer packages. Integrating the synchronization capability into the generator protection relay provides the most cost-effective and reliable solution.
The 5-inch, 800 × 480 color touchscreen display option allows you to directly set, monitor, and control your system, including up to five two- or three-position disconnect switches. A small form factor and multiple mounting adapters make it easy to upgrade protection without cutting or drilling existing cutouts. You can quickly integrate the SEL-700G into serial- or Ethernet-based communications with IEC 61850 Edition 2, EtherNet/IP, the Rapid Spanning Tree Protocol (RSTP), the IEEE 1588 Precision Time Protocol (PTP), IEC 60870-5-103, the IEC 62439 Parallel Redundancy Protocol (PRP), Mirrored Bits communications, Modbus, DNP3, and other protocols.
Starting At
$3,290Comprehensive Generator Protection—Connect the SEL-700G across small, medium, or large generators for complete primary and backup protection. The SEL-700GT provides an IEEE 1547-compliant intertie protection solution for distributed generation. Adding the optional neutral voltage connection to the SEL-700G provides 100 percent stator ground protection, based on third-harmonic voltage measurements. You can connect the neutral current input to protect solidly grounded or resistance-grounded machines.
Autosynchronizer—Replace external generator control and synchronizer relays with the built-in automatic synchronizer function. You can also visualize and synchronize system parameters on the device using the available color touchscreen display. The SEL-700G automatically synchronizes frequency, voltage, and phase control and connects the generator to the power system. A PC-based synchroscope and generator start reports allow you to monitor the generator synchronization process.
Current Differential Protection—Apply sensitive percentage-restrained current differential elements and an unrestrained element, along with synchronism check and volts-per-hertz elements, to protect both the generator and the step-up transformer. Optional current differential elements detect stator faults using a secure, sensitive current differential function. Power transformer and CT connection compensation allows the unit step-up transformer to be included in the generator differential zone.
Breaker Wear Monitoring—Record accumulated breaker contact wear with the breaker monitor function, which uses the manufacturer’s specifications for defining breaker operation limits. The internal monitor tracks the total number of close/open operations and integrates the interrupted current per phase. You can set an alarm to alert operators when measured and accumulated quantities approach maintenance thresholds. This information facilitates proactive breaker maintenance and replacement without underutilizing resources.
LEA Sensor Inputs—The SEL-700G can be ordered with low-energy analog (LEA) inputs to support medium- and low-voltage applications that use low-energy voltage sensors and Rogowski coils or other low-power current sensors. Order your device with the combination of LEA current and voltage inputs that suits your application.
Easy Communications—Choose from single or dual ports, copper or fiber-optic Ethernet or serial communications, and several protocols, including IEC 61850 Edition 2, EtherNet/IP, IEC 60870-5-103, IEEE 1588 PTP, IEC 62439 PRP and RSTP, Mirrored Bits communications, Modbus, DNP3 serial, and DNP3 LAN/WAN. Multiple Modbus TCP or Modbus serial sessions are available for custom configuration of your application.
Islanding Detection—The optional vector-shift function (78VS) and rate-of-change-of-frequency protection (81RF) support islanding detection.
Reliable Protection in Harsh Environments—The SEL-700G operates in extreme conditions, with an operating temperature of –40° to +85°C (–40° to +185°F), and it is designed and tested to exceed applicable standards, including vibration, electromagnetic compatibility, and adverse environmental conditions. In addition, the SEL-700G is ATEX-certified and Underwriters Laboratories (UL) Class I, Division 2-certified for use in hazardous and potentially explosive environments.
Updates
Features
- Front—LCD Version
- Front—Touchscreen Version
- Back
- Back—LEA Sensor Inputs
- Touchscreen—Bay Screen
- Touchscreen—Authentication
- Touchscreen—Breaker Control
- Touchscreen—Fundamental Metering
- Touchscreen—Phasors
- Touchscreen—Energy Metering
- Touchscreen—Sequential Events Recorder
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Large 2 × 16 character LCD.
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Default messages or up to 32 customizable display labels notify personnel of power system events or the relay status.
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Programmable front-panel tricolor LEDs.
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Customizable pushbuttons and labels.
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User-configurable label kit.
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Two programmable tricolor LEDs per pushbutton.
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The 5-inch, 800 × 480 display offers direct navigation via a capacitive touchscreen.
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Folders and applications provide quick access to bay screens, metering and monitoring data, reports, settings, and more.
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Full keyboard facilitates easy adjustment of settings.
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The home pushbutton allows you to easily return to the default home screen.
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Power supply options include 110–250 Vdc/110–240 Vac or 24–48 Vdc.
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An integrated web server enables direct relay access for metering and monitoring data without the need for external PC software.
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A wide variety of communications protocols and media provide flexibility to communicate with other devices and control systems.
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Fiber-optic serial port.
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Mirrored Bits communications provides fast and reliable relay-to-relay communication.
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Positions for optional expansion cards.
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Optional RTD inputs.
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CT and PT inputs are located on one card, allowing for more I/O in other slots.
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Power supply options include 24–48 Vdc or 110–250 Vdc/110–240 Vac.
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A wide variety of communications protocols and media provide flexibility to communicate with other devices and control systems.
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Accelerate firmware downloads via the Ethernet port.
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Fiber-optic serial port.
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Mirrored Bits communications provides fast and reliable relay-to-relay communication.
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Positions for optional expansion cards.
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Optional RTD inputs.
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LEA current and voltage sensor inputs.
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Bay Screens and Bay Control
Select from predefined bay screens, or configure your own bay screens using the acSELerator Bay Screen Builder SEL-5036 Software and acSELerator QuickSet SEL-5030 Software. With the bay screen, you can control as many as two breakers, monitor as many as eight disconnect switches, and view analog and digital data in a contextual display.
To control a breaker, simply tap the Bay Screens application on the home screen and then the breaker you want to control.
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Authentication
Enter your Level 2 password and tap Submit. The onscreen keyboard allows you to quickly and easily enter passwords, search for Relay Word bits, and enter settings whenever necessary.
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Breaker Control
Tap Trip or Close to control the breaker. When asked to confirm the action before the operation is completed, choose Yes or No.
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Meter Fundamentals
View the real, reactive, and apparent power of each phase in your system, and monitor the power factor information to determine if the phase current leads or lags the phase voltage.
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Meter Phasors
View a graphical and textual representation of the realtime voltages and currents in a power system during balanced and unbalanced conditions. By analyzing the phasors, you can determine power system conditions.
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Meter Energy
Display the real, reactive, and apparent energy metering quantities imported and exported by your system. You can reset the energy values via the display and record the time and date of reset. The metered quantities accurately account for the power system energy flow, whether your system is a net energy producer or consumer.
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Sequential Events Recorder
Easily review the time-stamped Sequential Events Recorder (SER) data, including whether or not the Relay Word bit asserted or deasserted, during root cause analysis of an event.
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Details
Comprehensive Generator Protection
Numerous current, voltage, frequency, distance, power, and out-of-step elements provide comprehensive protection for large, medium, and small generators.
Autosynchronizer
The optional, built-in automatic synchronizer function eliminates the need for expensive external synchronizer equipment. The SEL-700G automatically synchronizes frequency, voltage, and phase control and connects the generator to the power system. The synchronizer can be viewed directly on the available color touchscreen display.
Easy Communications
Quickly integrate the SEL-700G into serial- or Ethernet-based communications with IEC 61850 Edition 2, EtherNet/IP, IEEE 1588 PTP, IEC 60870-5-103, IEC 62439 PRP, Mirrored Bits communications, Modbus, DNP3 serial, DNP3 LAN/WAN, and other protocols.
IEC 61850 Test Mode
Use the IEC 61850 Test Mode to test system components in energized substations without fear of operating control output contacts.
Web Server Access
The built-in web server enables secure, remote access to the relay with password protection. You can download status reports or view metering and relay information remotely. This helps minimize trips to the relay location, saving time and money.
Accelerate Firmware Downloads
Simplify maintenance by downloading relay firmware via the Ethernet port. This also enables you to access and update all of your network relays simultaneously.
100% Stator Ground Detection
The SEL-700G detects stator ground faults on high-impedance grounded generators using a conventional neutral-overvoltage element with a third-harmonic voltage differential detection scheme for 100 percent stator winding coverage.
Current Differential Protection
Optional current differential elements detect stator faults using a secure, sensitive current differential function. Power transformer and CT connection compensation allows the unit step-up transformer to be included in the generator differential zone.
Power Elements
Sensitive power elements protect against reverse power, overload conditions, or low forward power.
RTD-Based Thermal Protection
Use an internal 10 RTD input card or an external SEL-2600 RTD Module to acquire thermal data for alarm, monitoring, and trip functions in the SEL-700G.
Metering and Reporting
View generator autosynchronizer, Sequential Events Recorder (SER), and 180-cycle oscillographic event reports in COMTRADE and CEV formats to analyze generator startup, shutdown, or system faults. Measure electrical, thermal, and generator run-time quantities. You can retrieve COMTRADE files via Ethernet FTP or IEC 61850 MMS.
Synchrophasor Data
Apply SEL synchrophasors (IEEE C37.118) to turn state estimation into state measurement and to provide early warning of potential system instability. The SEL-700G phasor measurement accuracy meets the IEEE C37.118-2005 Level 1 requirement. The synchronizer can be viewed directly on the available color touchscreen display.
Optional Touchscreen Display
The easy-to-use touchscreen interface provides a one-line mimic display for bay control and monitoring. You can view metered quantities, phasor diagrams, relay settings, event summaries, target statuses, SER data, and more. Extensive testing shows that the robust capacitive touchscreen display meets or exceeds industry standards as well as SEL quality and reliability requirements.
Vector Shift Protection
The vector shift element provides another element of protection for distributed generators connected to the utility network. It operates within three cycles—fast enough to prevent out-of-synchronization reclosing with the network feeders to avoid generator damage.
Rugged Design
Trust the industry’s widest ambient operating temperature range, –40° to +85°C (–40° to +185°F). The SEL-700G withstands vibration, electrical surges, fast transients, and extreme temperatures, meeting stringent industry standards. A conformal-coating option for the printed circuit boards provides an additional barrier to airborne contaminants, such as hydrogen sulfide, chlorine, salt, and moisture. In addition, the SEL-700G is ATEX-certified and UL Class I, Division 2-certified for use in hazardous and potentially explosive environments.
- Wind generator protection
- Comprehensive protocols, including IEC 61850 and DNP3, for easy integration
- Generator protection with autosynchronizer
- Dual Ethernet ports for backup fail-over communications channel
- Comprehensive protocols, including IEC 61850 and DNP3, for easy integration
- Generator protection with autosynchronizer
- 5-inch color touchscreen display with 8 pushbuttons
- Dual Ethernet ports for backup failover communications channel
Minimum Software Version
| Product | Revision | Z Number | acSELerator QuickSet Version | SEL Grid Configurator Version |
|---|---|---|---|---|
| SEL-700G | R110-V0 | 005 | 6.6.0.0 |
Latest Firmware Versions
There are no firmware versions available for this product.
| Product | Revision | Firmware ID | Date Available | Serial Number |
|---|---|---|---|---|
| SEL-700G | R303-V0 | SEL-700G-R303-V0-Z009004-D20240826 | 10/16/24 | ~3242900001 |
| SEL-700G | R302-V2 | SEL-700G-R302-V2-Z008004-D20240826 | 10/16/24 | ~3242900001 |
| SEL-700G | R301-V6 | SEL-700G-R301-V6-Z007004-D20240329 | 4/7/24 | ~3240980001 |
| SEL-700G | R201-V5 | SEL-700G-R201-V5-Z006003-D20220826 | 10/27/22 | ~3223000001 |
| SEL-700GT | R303-V0 | SEL-700G-R303-V0-Z009004-D20240826 | 10/16/24 | ~3242900001 |
| SEL-700GT | R302-V2 | SEL-700G-R302-V2-Z008004-D20240826 | 10/16/24 | ~3242900001 |
| SEL-700GT | R301-V6 | SEL-700G-R301-V6-Z007004-D20240329 | 4/7/24 | ~3240980001 |
| SEL-700GT | R201-V5 | SEL-700G-R201-V5-Z006003-D20220826 | 10/27/22 | ~3223000001 |
| SEL-700GW | R303-V0 | SEL-700G-R303-V0-Z009004-D20240826 | 10/16/24 | ~3242900001 |
| SEL-700GW | R302-V2 | SEL-700G-R302-V2-Z008004-D20240826 | 10/16/24 | ~3242900001 |
| SEL-700GW | R301-V6 | SEL-700G-R301-V6-Z007004-D20240329 | 4/7/24 | ~3240980001 |
| SEL-700GW | R201-V5 | SEL-700G-R201-V5-Z006003-D20220826 | 10/27/22 | ~3223000001 |
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.
Minimum Software Version
| Product | Revision | Z Number | acSELerator QuickSet Version | SEL Grid Configurator Version |
|---|---|---|---|---|
| SEL-700G | R110-V0 | 005 | 6.6.0.0 |
Instruction Manuals
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Sales Resource Central700G - Software Tab
Configuration
acSELerator QuickSet SEL-5030 Software
QuickSet is a tool for engineers and technicians to quickly and easily configure, commission, and manage power system devices. QuickSet includes a Graphical Logic Editor and a device template tool to reduce configuration time and streamline deployment.
Learn more and download on the QuickSet software page.
acSELerator Architect SEL-5032 Software
Architect allows users to configure and document IEC 61850 systems that include GOOSE, Sampled Values (SV), or Manufacturing Message Specification (MMS) communications. Architect automatically compares SCL files with IEC 61850 requirements to ensure standard compliance.
Learn more and download on the Architect software page.
Automated Data Collection
SEL Data Management and Automation (DMA) Application Suite
Available on the Blueframe platform, DMA applications automatically collect, store, and manage device-specific information like oscillography, Sequence of Events (SOE) data, device settings, and property information. They also provide automated password rotation and streamlined device audits.
Learn more on the DMA software page.
Visualization and Analysis
SEL-5601-2 synchroWAVe Event Software
synchroWAVe Event helps engineers diagnose a protective relay’s behavior during a power system fault. It is a powerful and easy-to-use solution for displaying and analyzing SEL relay event reports and COMTRADE files.
Learn more and download on the synchroWAVe Event software page.
Product Certifications
