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.

Easy Communications
Quickly integrate the SEL-710-5 into serial- or Ethernet-based communications with IEC 61850 Edition 2, EtherNet/IP, IEEE 1588 PTP, IEC 60870-5-103, PRP, Mirrored Bits communications, DNP3 serial, DNP3 LAN/WAN, and other protocols.

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.

Accelerated 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.

IEC 61850 Edition 2 Communications Protocol
Combine IEC 61850 Edition 2, an Ethernet network, and the SEL-710-5 for the fastest overall performance for substation automation and control. You can improve security using the password authentication and session time-out features, transfer event files in COMTRADE and CEV formats, and transfer CID files, settings, and reports. acSELerator Architect SEL-5032 Software streamlines the configuration of IEC 61850 in the SEL-710-5.

IEC 61850 Test Mode
Use the IEC 61850 Test Mode to test system components in energized substations without fear of operating control output contacts.

Simple Network Time Protocol (SNTP)
Simplify wiring and installation by receiving a time signal over existing Ethernet networks. SNTP makes a good backup to more accurate IRIG-B time synchronization. The 5 ms accuracy is ideal for basic time synchronization throughout a substation.

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, Sequential Events Recorder (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.

Incipient Fault Detection
Identify potential cable failures to extend asset life and minimize unexpected downtime. The SEL-710-5 checks for self-extinguishing half-cycle faults, providing an indication of imminent cable failures.

Asset Monitoring
Track the operating characteristics of your motor and accompanying devices with the predictive maintenance capability. You can reduce production losses from unexpected equipment failures and lower maintenance costs by switching to condition-based maintenance schedules.

Expanded SELogic Control Equations
Use math and logic combinations of analog and digital values for customized applications. You can adapt system control based on prefault conditions and scale analog values and latch momentary inputs for SCADA retrieval.

Metering and Reporting
View SER and 180-cycle oscillographic event reports in COMTRADE and CEV formats for rapid commissioning, testing, and post-fault diagnostics. Ethernet FTP or IEC 61850 MMS allows you to easily retrieve COMTRADE files.

AccuTrack Thermal Model
Apply the SEL-710-5 to dynamically calculate motor slip and precisely track the rotor thermal capacity used. The AccuTrack Thermal Model uses this information to reduce the time between starts and give the motor more time to reach its rated speed before tripping.

Motor Thermal Overload Protection
The SEL-710-5 provides locked-rotor, running overload, and negative-sequence current unbalance protection. It uses the AccuTrack Thermal Model to accurately track the heating effects of load current and current unbalance during the motor’s operating conditions (starting and running).

Arc-Flash Detection
AFD-based protection is fast, responding in a few milliseconds with high-speed, high-current interrupting output contacts. This fast response, supervised by phase overcurrent elements, provides high-speed and secure arc-flash protection that improves personnel safety and reduces equipment damage. Arc-flash mitigation options in the SEL-710-5 offer either four or eight AFD inputs capable of reading both point and loop sensors.

Rugged Design
Trust the industry’s widest ambient operating temperature range, –40° to +85°C (–40° to +185°F). The SEL-710-5 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-710-5 is ATEX-certified and UL Class I, Division 2-certified for use in hazardous and potentially explosive environments.