Feeder Protection and Control Relay REF620

Description

REF620 is a dedicated feeder management relay perfectly aligned for the protection, control, measurement and supervision of utility and industrial power distribution systems, including radial, looped and meshed networks, with or without distributed power generation. REF620 can also be used to protect feeders including motors or capacitor banks. Additionally REF620 offers functionality for interconnection protection used with distributed generation like wind or solar power connection to utility grid. Furthermore REF620 includes functionality for high-impedance based busbar protection. REF620 is a member of ABB's Relion® protection and control product family and its 620 series. The 620 series relays are characterized by their functional scalability and withdrawableunit design. The 620 series has been designed to unleash the full potential of the IEC 61850 standard for communication and interoperability of substation automation devices.

Product benefits

• Extensive protection and control functionality, either with sensors or conventional instrument transformers
• Functional scalability and extensive possibilities to easily tailor configurations to application-specific requirements
• Withdrawable plug-in unit design for swift installation and testing
• Large graphical display for showing customizable SLDs, accessible either locally or through an easy-to-use web-browser-based HMI
• Extensive life-cycle services

Product features

• Wide range of protection and control functionality 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 – advanced and fast fault location of short circuits and earth faults, interconnection protection for distributed power generation, capacitor bank, basic motor 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 and for different time synchronization methods, including high-accuracy time synchronization via IEEE 1588 V2 Precision Time Protocol