Product benefits
The compact design makes it suitable for both new and retrofit installations
Quick and easy routine maintenance thanks to the removable plug-in design
Complete type test certified by KEMA
Certificated for marine and off-shore use by Det Norske Veritas (DNV)
Product features
Dedicated protection for utility distribution and industrial applications
REF610 offers overcurrent and thermal overload protection for cable feeders,
non-directional earth-fault protection and phase discontinuity protection, and three-phase,
multishot auto-reclose functions for overhead line feeders
REF610 supports a wide range of standard communication protocols,
including IEC 61850. IEC 60870-5-103. Modbus®, Profibus, DNP3. SPA and LON.

REF611 is a dedicated feeder protection relay designed for the protection, control, measurement
and supervision of utility substations and industrial power systems.
The feeder protection relay REF611 can be supplied either with directional or non-directional
overcurrent and earth-fault protection.
Directional earth-fault protection is mainly used in isolated neutral or compensated networks,
whereas the non-directional earth fault protection is intended for directly or low-impedance earthed neutral networks.
REF611 is a member of ABB’s Relion® product family and part of its 611 protection and control series of relays.
For optimized control and reliable operation of your switchyard, the REC670 is your best choice for transmission applications.
The outstanding I/O capability in REC670 enables control of several bays with complete measurement with only one IED.
For instance, one REC670 IED is capable of handling control of all apparatuses
in one entire diameter in 1 ½ breaker arrangement including breaker failure protection for all breakers.
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