SEL-787L

The SEL-787L is a cost-effective and reliable line current differential protection solution for power lines and feeders, offering support for conventional/low energy analog (LEA) current and voltage input, flexible I/O options, easy mounting, and quick adjustments.

The SEL-787L also offers directional overcurrent protection, arc flash mitigation, fault location, high impedance fault detection, broken conductor detection, event analysis, and more, making it an effective choice for short lines, critical feeders, and distributed generation connections.

You can quickly integrate the relay into serial or Ethernet-based communications with IEC 61850 Edition 2, IEC 60870-5-103, IEC 62439 Parallel Redundancy Protocol (PRP), EtherNet/IP, Fast Spanning Tree Protocol (RSTP), IEEE 1588 Precision Time Protocol (PTP), Modbus, DNP3, and other protocols.