ABB RET620 ANSI Relay is a dedicated transformer relay perfectly aligned for the protection, control, measurement, and supervision

of two- or three-winding power transformers and power generator-transformer blocks in utility and industrial power distribution

systems. RET620 is a member of ABB’s Relion product family and a part of its 620 series products.

The 620 series relays are characterized by flexibility and performance for demanding utility distribution and industrial

applications. Engineered from the ground up, the 620 series has been designed to unleash the full potential of the IEC 61850 standard for communication and interoperability between substation automation devices.

Scope

Ideal protection for two-winding power transformers and power generator-transformer blocks

ABB RET620 ANSI Relay benefits

 * Maximized capital by keeping assets working longer with designs that require less equipment and space

 * Enhanced safety by reducing hazards with safety-conscious designs

 * Increased reliability by maintaining vital operations with steady, high-quality power every minute of every day

 * Reduced operating costs with effective energy management and maintenance strategies

 * More flexible system upgrades without rewiring or changing components

 * Ease of integration with non-proprietary IEC 61850 communications

Product features

 * Drawout design

 * Sensitive differential protection for turn-to-turn faults of two or three windings

 * Overexcitation (V/Hz) protection

 * Arc flash detection (AFD)

 * Ring-lug terminals for all inputs and outputs

 * Programmable push buttons

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.