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Voltage relay REU610

REU610 is a voltage relay for system voltage protection, measurement and supervision in utility and industrial power systems.

REU610 is a member of ABB’s Relion® product family and part of its 610 product series. The series includes protection relays for feeder protection, motor protection and general system voltage supervision. The plug-in design facilitates the commissioning of the switchgear and enables fast and safe insertion and withdrawal of plug-in units.

REU610 is designed for distribution substation busbar over-voltage and under-voltage protection, feeder and power transformer over-voltage protection, motor under-voltage protection, and capacitor bank protection and supervision. In isolated neutral power systems, it is also used for non-discriminative earth-fault protection, based on residual voltage measurement. REU610 is used for initializing automatic substation busbar changeover and for disconnecting small power units from the public network, that is, islanding.

Why ABB?

  • Dedicated protection for utility distribution and industrial applications
  • Complete type test certified by KEMA
  • Certificated for marine and off-shore use by Det Norske Veritas (DNV) 
  • Compact size makes the 610 series ideal for retrofits and small spaces
  • Quick and easy routine maintenance thanks to the removable plug-in design    

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