REX640 is a powerful all-in-one protection and control relay for advanced power generation and distribution applications. REX640 offers unmatched flexibility throughout its entire life cycle – from ordering through testing and commissioning, to upgrading the functionality of its modular software and hardware to meet new application requirements. As a member of ABB’s Relion® protection and control family of relays, REX640 further reinforces Relion’s position as the range of relays to rely on.
Scope
All-in-one protection and control
Benefits
- Complete application coverage with one freely configurable device for flexible and cost-effective tailoring to application-specific requirements
- Ready-made application packages for convenient and smooth ordering
- Fully modular hardware and software for maximum flexibility and easy adaption to changing protection requirements throughout the entire relay life cycle
- Optimal situational awareness and usability with application-driven LHMI/SHMI (switchgear HMI)
- Ready-made application-based LHMI pages – including support for a 64-channel alarm annunciator (SACO) – saving both time and efforts
- Savings of up to 15% on relay costs with SHMI instead of LHMI – while still maintaining full LHMI functionality on panel/bay level for optimal visibility
Features
- IEC 61850 Edition 2.1 – certified by DNV/GL (KEMA) – and Edition 1 and with redundancy support based on HSR and PRP
- Ability to receive four streams of sampled measured values (SMVs) and send one via IEC 61850-9-2 LE-based process bus communication
- Support for high-speed bus transfer in case of a failing incoming feeder to secure electrical supply for critical parts of a system
- Synchronizer functionality for both generator and non-generator breakers
- Four supervised arc sensor inputs, either loop or lens-type
- Centralized account management with role-based access control