ABB REF620 IEC Feeder Protection and Control Relay

Description

REF620 is a dedicated feeder management relay for protection, control, measurement, and supervision in utility and industrial power distribution systems, including radial, looped, and meshed networks, with or without distributed power generation. This compact and versatile relay integrates protection, control, monitoring, and supervision into one device.

• Extensive protection and control functionality with the flexibility to use sensors or conventional instrument transformers
• Functional scalability with extensive options to tailor configurations to specific application requirements
• Withdrawable plug-in unit design for quick installation and testing
• Large graphical display for customizable single-line diagrams (SLDs), accessible locally or via a web-browser-based HMI
• Extensive life-cycle services

• Wide range of protection and control functionalities for incoming and outgoing feeders
• Extensive earth-fault protection portfolio with unique multifrequency admittance-based protection for higher sensitivity and selectivity
• Several optional functionality packages, including advanced and fast fault location for short circuits and earth faults, interconnection protection for distributed power generation, capacitor bank protection, basic motor protection, and arc protection
• Supports native IEC 61850 Editions 1 and 2, including redundancy HSR and PRP, GOOSE messaging, and IEC 61850-9-2 LE for less wiring and supervised communication
• Supports Modbus, DNP3, and IEC 60870-5-103 communication protocols, with various time synchronization methods, including high-accuracy synchronization via IEEE 1588 V2 Precision Time Protocol