710#51
Price: $4,721.08 | Savings: $130.00
- Synchronous and induction motor protection
- Electromechanical relay retrofit
SEL-710-5
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 (AFD), differential protection, and synchronous motor protection. The synchronous option supports power factor regulation and includes, at no additional cost, a voltage divider accessory to interface with the motor excitation system. An optional 5-inch, 800 × 480 color touchscreen display allows you to directly set, monitor and control your system, including up to five two- or three-position disconnect switches. You can quickly integrate the SEL-710-5 into serial-or Ethernet-based communications schemes with IEC 61850 Edition 2, IEC 60870-5-103, the IEC 62439 Parallel Redundancy Protocol (PRP), Mirrored Bits communications, Modbus, DNP3, EtherNet/IP, the Rapid Spanning Tree Protocol (RSTP), the IEEE 1588 Precision Time Protocol (PTP), and other protocols. Together with the AccuTrack Thermal Model, these features provide a great solution for all of your motor protection applications.
Starting at
$4,470
Motor Protection
Protect a full range of low- or 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.
Reliable Protection in Harsh Environments
The SEL-710-5 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-710-5 is ATEX-certified and Underwriters Laboratories (UL) Class I, Division 2-certified for use in hazardous and potentially explosive environments.
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.
Flexible 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, Rapid Spanning Tree Protocol (RSTP), IEC 60870-5-103, IEEE 1588 PTP, PRP, Mirrored Bits communications, DNP3 serial, and DNP3 LAN/WAN. You can select from multiple Modbus TCP or Modbus serial sessions for custom configuration of your application.
Asset Monitoring
Reduce production losses from unexpected equipment failures and lower maintenance costs by switching to predefined maintenance schedules. The SEL-710-5 can track the operating characteristics of your motor and accompanying devices with the built-in asset monitoring capability. You can monitor items such as vibration, motor start current, motor start times, motor stop times, broken rotor bars, incipient cable faults, and excessive wear on molded-case circuit breakers.
LEA Sensor Inputs
The SEL-710-5 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.
SEL-710-5 Features
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- Large 2 × 16 character LCD.
- Default messages or up to 32 customizable display labels notify personnel of power system events or the relay status.
- Programmable front-panel tricolor LEDs.
- Customizable pushbuttons and labels.
- User-configurable label kit.
- Two programmable tricolor LEDs per pushbutton.
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- The 5-inch, 800 × 480 display offers direct navigation via a capacitive touchscreen.
- Folders and applications provide quick access to bay screens, metering and monitoring data, reports, settings, and more.
- Programmable front-panel LEDs with user-configurable labels alert operators to faulted phases, the relay’s status, and element operation.
- Programmable operator pushbuttons with user-configurable labels allow front-panel customization.
- Optional optical point sensor for AFD. Bare-fiber optical sensors are also available.
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- Power supply options include 110–250 Vdc/110–240 Vac or 24–48 Vdc.
- An integrated web server enables direct relay access for metering and monitoring data without the need for external PC software.
- A wide variety of communications protocols and media provide flexibility to communicate with other devices and control systems.
- Port options include demodulated IRIG-B for precise-time input or a PTC input to protect against overcurrent conditions.
- Mirrored Bits communications provides fast and reliable relay-to-relay communication.
- Card slots include positions for optional I/O, arc-flash detection, or synchronous motor inputs/differential current inputs.
- 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.
- Accelerate firmware downloads via the Ethernet port.
- A wide variety of communications protocols and media provide flexibility to communicate with other devices and control systems.
- Port options include demodulated IRIG-B for precise-time input or a PTC input to protect against overcurrent conditions.
- Mirrored Bits communications provides fast and reliable relay-to-relay communication.
- Card slots include positions for optional I/O, arc-flash detection (AFD), or synchronous motor inputs/differential current inputs.
- LEA current and voltage sensor inputs.
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- Motor ControlThe color touchscreen lets you control a motor via a custom bay screen or the built-in Start Motor and Stop Motor applications in the Control folder. To control a motor, simply tap the Control folder on the home screen, and then tap Start Motor or Stop Motor.
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- AuthenticationEnter 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 when necessary.
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- Start MotorWhen the screen prompts you to confirm the action, tap Yes.
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- Fundamental MeteringView 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 PhasorsView a graphical and textual representation of the real-time 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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- Vibration MonitoringView critical motor vibration data to identify potential defects and respond before motor failures occur. The display provides intuitive graphical feedback to enable timely operator response.
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- Sequential Events RecorderEasily 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.