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Motor Protection Relay

Protect asynchronous (induction) and synchronous motors with one SEL-710-5 Motor Protection Relay. Features include broken rotor bar detection and variable-frequency drive (VFD) support as well as options for arc-flash detection, differential protection, and synchronous motor protection. The synchronous option supports power factor regulation and also includes, at no additional cost, a voltage divider accessory to interface with the motor excitation system. Together with the industry’s best AccuTrack Thermal Model, these new features combine to provide a great solution for all of your motor protection applications.

Coming Soon: 5-inch color touchscreen display

Starting At

$3,000 USD

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Motor Protection—Protect a full range of medium-voltage, three-phase induction and synchronous motors. The slip-dependent thermal model (AccuTrack) allows independent thermal protection of both the rotor and stator.

Arc-Flash Mitigation—Select optional arc-flash detection (AFD) inputs for overcurrent-supervised arc-flash protection. Reduce incident energy further by selecting high-speed, high-current interrupting output contacts to achieve secure, reliable, and fast arc-flash tripping.

Differential Protection—Configure current differential elements for more comprehensive protection of large, high-value motors.

Broken Rotor Bar Detection—Detect broken rotor bars in squirrel-cage induction motors by implementing the optional spectrum analysis features. Minimize repair costs and downtime by detecting rotor bar problems before they cause catastrophic motor failure.

Synchronous Motors—Protect synchronous motors (brush and brushless). Use the optional inputs for measuring and controlling excitation system signals on brushed motors. Regulate power factor using digital or analog outputs of the relay connected directly to the excitation system.

Front-Panel Flexibility—Improve functional control and situational awareness with the programmable auxiliary buttons, LEDs, and configurable labels.

Metering and Monitoring—Analyze SER reports and oscillographic event reports for rapid commissioning, testing, and post-fault diagnostics. Use the SEL-710-5 Relay’s motor start report, motor start trending, load profile monitoring, motor operating statistics, and demand metering features to reduce separately mounted metering/monitoring devices.

Integration—Select from a variety of communications ports and protocols to integrate SEL-710-5 Relays into supervisory or coordinated protection and control systems.




Reduce Arc-Flash Hazards

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Reduce Arc-Flash Hazards

Advanced Protection
The SEL-710-5 provides advanced protection for induction and synchronous motors. Protection includes thermal overload, overcurrent, undercurrent, current unbalance, current differential, phase loss, ground fault, loss-of-field, over- or underfrequency, and much more.

Optimized Start Times
The SEL-710-5 calculates percent of thermal capacity used in the motor to determine maximum safe start times with full motor protection. Accurate tracking of the motor thermal capacity also minimizes the time needed between starts.

Convenient Controls
Use the eight programmable pushbuttons and 16 configurable tricolored LEDs on the front panel for quick, personalized control, with factory default start and stop functions.

Easy Communications
Choose from single or dual, copper or fiber-optic Ethernet as well as Modbus TCP, IEC 61850, Modbus Serial, DNP3, EIA-232, EIA-485, Telnet, and File Transfer Protocol (FTP) communications. Pick one or multiple connections, including multiple Modbus sessions for custom configuration of your application.

Rugged Design
Install in extreme environments with the industry’s widest ambient temperature operating range, –40° to +85°C (–40° to +185°F).

  • Flexible I/O for Local Control and System Applications: The base unit includes three digital outputs and two digital inputs. There are three card slots for optional SELect I/O cards, including the following:
    • Four digital inputs (DI) and four digital outputs (DO)
    • Four fast hybrid DO and four DI
    • Eight DI
    • Eight DO
    • Four DO, three DI, and one analog output (AO)
    • Four analog inputs (AI) and four AO
    • Eight AI for dc process values
    • Ten resistance temperature detector (RTD) inputs
    • Three ac current (differential) and four arc-flash detection (AFD) inputs
    • Three ac current (differential) and synchronous inputs
    • Eight AFD inputs
    • Neutral ac current input on SELect 4 ACI/3 AVI card for optional 5 A, 1 A, and 2.5 mA range
  • Choice of IRIG-B time-code input or PTC (thermistor) input.
  • External RTDs (12 RTD inputs and one contact input on SEL-2600A or SEL-2600D RTD Module mounted near motor).
  • Choose from Ethernet, Modbus TCP, DNP3, IEC 61850, Modbus Serial, EIA-232, EIA-485, Telnet, and File Transfer Protocol (FTP) communications.
  • Conformal coating: Protect equipment from harsh environments and airborne contaminants, such as hydrogen sulfide, chlorine, salt, and moisture.
  • Retrofit Replacement Kits:
    • GE 469 - SEL-710 kit P/N 915900055
    • GE 369 - SEL-710 kit P/N 915900054
    • GE 269 - SEL-710 kit P/N 915900054
    • Cutler-Hammer MP-3000 - SEL-710 kit P/N 915900057
    • Other mounting-kit options are available.


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Minimum QuickSet Version

Product Revision Z Number Minimum Software Version
SEL-710-5 R102-V0 002

Please contact Application Engineer for firmware related to your hardware platform. The current revision does not apply to all hardware.

Minimum QuickSet Version

Product Revision Z Number Minimum Software Version
SEL-710-5 R102-V0 002

Please contact Application Engineer for firmware related to your hardware platform. The current revision does not apply to all hardware.

Product Certifications