Addressing aging infrastructure by

future-proofing the grid

•  Ideal for one-to-one replacement of 615 and 620 series relays as the next step in terms of

technological innovation, flexibility, cost-effectiveness and standardization

•  Easy customization and adaptation to changing protection requirements with modular and

scalable hardware and software

•  Extensive functionality to support the increasing integration of distributed generation and evolving

grid codes

•  Condition monitoring and supervision for optimized component maintenance and return on

investment

•  Relay retrofit program for smooth and easy replacement of SPACOM with REX615 relays

Supporting the digitalization of substations

•  Designed to support the increasing digitalization of substations – with IEC 61850 9-2-based process

bus for future integration with centralized protection

•  Standardized IEC 61850-compliant communication – a cost-effective and ecological choice

•  Smooth interoperability between substation automation devices with the world’s first truly

IEC 61850-based protection relay

•  Optimal cyber security to safeguard critical infrastructure

Optimizing asset management

•  Brand-new relay but with an impressive history –familiar relay saves time and efforts

•  Less to learn and less spare devices to store with one relay covering multiple application areas

•  Extensive life cycle services – long-term global partner with longtime experience close to you in

your language

•  Adaptable to changing requirements for the lifetime of the relay through easy adding or

replacing of modules or application packages

•  Easy access to up-to-date information via the e-business platform ABB Relays-Online

•  Latest addition to ABB’s renown Relion® relay family – strengthening the REX portfolio