The ABB Feeder Protection and Control  REF615E-C is a sophisticated feeder protection relay designed for medium-voltage applications in utility and industrial power distribution systems. As a member of ABB's Relion® product family, this compact device provides comprehensive protection, control, measurement, and supervision for overhead lines and cable feeders. The REF615E-C ABB Control Relay supports various network configurations including radial, looped, and meshed systems, with optional capabilities for distributed power generation integration. Its versatile design makes it suitable for diverse electrical distribution environments requiring reliable protection solutions.

Featuring both directional and non-directional protection functions, the REF615E-C ABB feeder protection and control relay offers extensive overcurrent and earth-fault protection, along with voltage, frequency, and power-based protection schemes. The relay incorporates unique multi-frequency admittance-based earth-fault protection for enhanced sensitivity and selectivity in fault detection. It supports conventional instrument transformers and modern sensor technology, providing flexibility in system integration and configuration. With its withdrawable plug-in unit design, the ABB REF615E-C facilitates swift installation, maintenance, and testing procedures.

The communication capabilities of the dedicated feeder protection ABB REF615E-C include support for IEC 61850 Editions 1 and 2, featuring HSR and PRP redundancy protocols, GOOSE messaging, and IEC 61850-9-2 LE for simplified wiring and supervised communication. The relay also supports multiple protocols including Modbus, DNP3, and IEC 60870-5-103, ensuring compatibility with various control systems.It features a large graphical display for customizable single-line diagrams, accessible locally or through a web-browser-based HMI interface, enhancing user interaction and system monitoring.

Designed for operational efficiency, the REF615E-C Membrane Keypad ABB consumes less than 10W power and operates with auxiliary voltages from 48-250V DC or 100-240V AC. Its compact design incorporates advanced fault location capabilities for short circuits and earth faults, optional arc protection, and high-speed outputs. It represents ABB's commitment to providing reliable protection solutions with extensive life-cycle services, making it an ideal choice for modern power distribution systems requiring advanced protection and control functionality.