Transformer Protection and Control Relay RET620

Description

RET620 is a dedicated two-winding power transformer management relay perfectly aligned for the protection, control, measurement and supervision of both power and step-up transformers, including power generator-transformer blocks, in utility and industrial power distribution systems. RET620 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 withdrawable unit 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
• 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 showing customizable SLDs, accessible either locally or through an easy-to-use web-browser-based HMI
• Extensive life-cycle services

Product features

• Extensive range of protection and control functionality for two-winding power transformers, including advanced and fast differential protection with high inrush stability
• Supports various neutral earthing options, matching either high-impedance or numerical low-impedance restricted earth-fault principles
• Optionally can also include automatic voltage regulation of power transformers with a motor-driven on-load tap changer and arc protection
• Supports native IEC 61850 Edition 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 different time synchronization methods, including high-accuracy time synchronization via IEEE 1588 V2 Precision Time Protocoll