Motor Protection Relay

Manufacturer

SEL

Manufacturer (Secondary)

SEL

Category

Hardware

Specifications

Operating Temperature Range: -40° to +85°C (-40° to +185°F).
Input Voltages: A range of power supply options are available, including 24–48 Vdc, 110–250 Vdc, and 110–240 Vac.
Input Current: The relay can be configured for 5 A input.
I/O (Inputs/Outputs): Options for various digital inputs (DI) and digital outputs (DO), including fast hybrid DOs and optoisolated control inputs.
Interface: Features a 2 x 16 character LCD display with programmable tricolor LEDs and customizable pushbuttons. The SEL-710-5 model also has an available 5-inch color touchscreen option.
Protection Elements: Includes overcurrent (phase, negative sequence, residual ground), thermal overload (AccuTrack thermal model), undercurrent, current unbalance, phase loss, ground fault, over-/under-frequency, and phase reversal protection.
Monitoring: Provides metering for phase voltages and currents, sequence components, power, frequency, and energy, with data logging for maximum/minimum values.
Event Reporting: Includes a Sequential Events Recorder (SER) and oscillography capabilities for detailed fault analysis.