ABB REB611 Busbar and Multipurpose Differential Protection and Control

Description

REB611 is a dedicated busbar protection relay for phase

segregated short-circuit protection, control, and supervision of

single busbars. REB611 is intended for use in high-impedance

based applications within utility substations and industrial

power systems. In addition, the protection relay can be utilized

in restricted earth-fault and residual earth-fault applications for

the protection of generators, motors, transformers and reactors.

The 611 series relays fully support the IEC 61850 standard for

communication and interoperability of substation automation

devices, including fast GOOSE (Generic Object Oriented

Substation Event) messaging, and can now also benefit from

the extended interoperability provided by Edition 2 of the

standard. The relays further support the parallel redundancy

protocol (PRP) and the high-availability seamless redundancy

(HSR) protocol. The 611 series relays are able to use IEC 61850

and Modbus® communication protocols simultaneously.

REB611 is a member of ABB’s Relion® product family and part

of the 611 protection and control product series. The 611 series

relays are characterized by their compactness and withdrawable-unit design.

The 611 series offers simplified yet powerful functionality for

most applications. Once the application-specific parameter set

has been entered, the installed protection relay is ready to be

put into service. The further addition of communication

functionality and interoperability between substation

automation devices offered by the IEC 61850 standard adds

flexibility and value to end users as well as electrical system manufacturers.