Description

ABB Transformer protection and control RET620 IEC Numerical Relay

ABB TRANSFORMER PROTECTION AND CONTROL RET620 IEC NUMERICAL RELAY COMPACT PROTECTION AND CONTROL WITH VOLTAGE REGULATION FOR TWO-WINDING POWER TRANSFORMERS

ABB RET620 IEC Relay is a dedicated transformer management relay 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 also ideal for voltage regulation.

Compact and versatile two-winding power transformer protection relay with integration of protection, control, monitoring and supervision in one relay.

Scope

Protection for two-winding power transformers

ABB RET620 IEC Relay Key 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

Key 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 Protocol

ABB delivers a full range of genuine IEC 61850 protection and control products also including network automation. ABB’s IEC 61850 compliant solutions offer a unified user experience for operating power distribution systems from the secondary substation level up to the network control center level. ABB distribution automation products are built to withstand the rigors of the most demanding environments including marine and offshore, industrial facilities such as mines and paper and petrochemical plants, as well as utilities in urban and rural locations.

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