Description

REU610 is a voltage protection relay for system voltage

protection, measuring and supervising in utility and industrial

power systems. REU610 is a member of ABB’s Relion®

protection and control product family and part of its 610

product series. The 610 series includes protection relays for

feeder protection, motor protection and general system voltage

supervision. The plug-in design of the 610 series protection

relays facilitates the commissioning of the switchgear and

enables fast and safe insertion and withdrawal of relay plug-in units.

The protection relay is primarily designed for the overvoltage

protection of power system components, such as busbars,

feeders, power transformers and capacitor batteries. It is also

used for the general power system earth-fault supervision.

Further, the protection relay can be used for undervoltage

protection of motors and overvoltage protection of capacitor

batteries, for initialization of automatic busbar changeover and

disconnecting small power units from the network in case of a

major network disturbance. The 610 series protection relays

are suitable for employment in marine and offshore environments.

The numerical voltage protection relays of the 610 series

support a wide range of standard communication protocols,

among them the IEC 61850, IEC 60870-5-103, DNP3, Modbus,

Profibus, LON and SPA communication protocols.