Benefits of SEL-710-5

The SEL-710-5 Motor Protection Relay provides an exceptional combination of protection, monitoring, control, and communication in an industrial package.
➤ Standard Motor Protection and Control Features. Protect and/or control low- or medium-voltage three-phase
motors and variable frequency drive (VFD)-fed motors, with an enhanced thermal model that includes:
➢ Locked rotor starts
➢ Time-between-starts
➢ Starts-per-hour
➢ Antibackspin timer
➢ Load loss, current unbalance
➢ Load jam/stalled rotor
➢ Phase reversal
➢ Breaker/contactor failure
➢ Positive temperature coefficient (PTC)
➢ Thermistor over temperature

➢ Phase, negative-sequence, residual ground instantaneous, and inverse-time overcurrent elements
➢ Load control
➢ Star-delta starting
➢ Two-speed control
➢ Forward/reverse start control.
➢ Broken rotor bar detection
➢ Rotor slip calculation
➢ Virtual speed switch
➢ Motor coast time
➢ Undervoltage
➢ Overvoltage
➢ Inverse-time over- and undervoltage elements
➢ Underpowered
➢ Reactive power
➢ Phase reversal
➢ Power factor correction
➢ Frequency
➢ Loss of potential
➢ Breaker failure protection
➢ Incipient cable fault detection
➢ Asset monitoring capabilities
➢ RTD-based protection. As many as 10 RTDs can be monitored using an internal RTD card or as many as 12 RTDs using an SEL-2600 RTD Module with the ST® option.

➤ Optional Synchronous Motor Protection and Control. Use the SEL-710-5 with an optional synchronous motor
differential card (SYNCH/3 DIFF ACI) that provides starting control, power factor or reactive power closed loop
regulation control, and loss-of-field, out-of-step, loss-of-synchronism (pull-out), field resistance, field voltage, and
field current protection elements.
➤ Optional Differential Protection. Use the SEL-710-5 with optional current differential protection available with a four-channel arc-flash card (4 AFDI/3 DIFF ACI) or synchronous motor protection and control card (SYNCH/3 DIFF ACI).
➤ Optional Arc-Flash Protection. Use the SEL-710-5 with optional four-channel fiber-optic arc-flash detector
inputs and differential protection elements (4 AFDI/3 DIFF ACI) or the eight-channel fiber-optic arc-flash detector
inputs (8 AFDI). Settable arc-flash phase and neutral overcurrent elements combined with arc-flash light detection Elements provide secure, reliable, and fast-acting arc-flash event protection.
➤ Optional Low-Energy Analogue (LEA) Voltage Sensor Inputs and Rogowski Coil/LPCT Current Inputs. The
The LEA input range for voltages is as high as 8 Vac rms. Based on the nominal feeder current, the relay automatically
sets the gain for the LEA current channel inputs, which allows for a wide range of primary currents.
➤ Operator Controls. Start and stop the motor easily with eight programmable front-panel pushbuttons, each with two
tricoloured LEDs. Also, the SEL-710-5 provides 32 local and 32 remote control bits to help manage relay operations.
➤ Integrated Web Server. Log in to the built-in web server to view metering and monitoring data and download events.
Sequential Events Recorder (SER), etc. Also, use the server to view relay settings and to perform relay firmware upgrades.
➤ Relay and Logic Settings Software. Reduce engineering costs for relay settings and logic programming with
ACSELERATOR QuickSet® SEL-5030 Software. Tools in QuickSet make it easy to develop SELOGIC® control
equations. Use the built-in phasor display to verify proper CT polarity and phasing.
➤ Metering and Asset Monitoring. Eliminate separately mounted metering devices with built-in metering functions.
Analyze Sequential Events Recorder (SER) reports and oscillographic event reports for rapid commissioning, testing, and
post-fault diagnostics. Monitor the health of your asset and accompanying devices using these asset monitoring capabilities:
➢ Vibration Monitoring
➢ Motor Monitoring Using Fourier Analysis
➢ Broken Rotor Bar Detection
➢ Motor Start Report
➢ Motor Maintenance Report
➢ Motor Operating Statistics
➢ Motor Start Trending
➢ Load Profiling
➢ Incipient Cable Fault Detection
➢ Molded Case Circuit Breaker Health
➢ Breaker Monitoring
➤ Front Panel HMI. Navigate the relay HMI through the use of a 2 x 16-character LCD or optional 5-inch, color,
800 x 480-pixel touchscreen display

➤ Additional Standard Features. Use other standard features, including Modbus® RTU and MIRRORED BITS®
communications, built-in web server, load profile, breaker wear monitoring, 128 remote analogs, support for 12
external RTDs (SEL-2600), IRIG-B input, advanced SELOGIC control equations, configurable labels, and an
SEL-2812 compatible ST fibre-optic serial port.
➤ Optional Communications Protocols. Optional communications protocols include IEC 61850 Edition 2 and Modbus
TCP/IP, DNP3 serial and LAN/WAN, EtherNet/IP, Simple Network Time Protocol (SNTP), IEEE 1588-2008 firmware-based Precision Time Protocol (PTP), IEC 60870-5-103, RSTP, and PRP.
➤ Optional Communications Ports. Elective communications ports include EIA-232 or EIA-485 multimode fiberoptic
serial port and single or dual, copper or fibre-optic Ethernet ports.
➤ Optional I/O Cards. Digital and analog I/O options include 4 AI/4 AO, 8 AI, 4 DI/4 DO, 8 DI, 8 DO, 3 DI/4 DO/1 AO.
4 DI/3 DO and 14 DI. An optional 10 internal RTD card is also available for the SEL-710-5. Conformal coating for
Chemically harsh and/or high-moisture environments are available as an option.
➤ Language Support. Choose English or Spanish for your serial ports, including the front-panel serial port. The
The standard relay front-panel overlay is in English; a Spanish overlay is available as an ordering option.