Application; Reb650 Application - ABB Relion 650 Series Applications Manual

1MRK 505 287-UUS B
Section 2
2.1

REB650 application

The numerical busbar protection REB650 IED provides its users with a wide variety of application
opportunities. Designed primarily for the protection of single busbars with or without
sectionalizers, it also offers high impedance differential protection for generators,
autotransformers, shunt reactors and capacitor banks. The REB650 I/O capability allows you to
protect up to three 3-phase high impedance differential protection zones with a single IED.
Apparatus control for up to 8 apparatuses with interlocking can be included in one IED by function
block engineering.
A number of additional protection functions are available for the protection of the bus tie bay. The
additional protection functions include different types of phase and ground fault overcurrent
protection and overvoltage/undervoltage protection.
One configured package has been defined for the following application:
• Complete busbar protection for two busbar sections (zone 1 and 2), with the possibility for
check zone (A03A)
For the high impedance differential protection, the differential current summation process per
phase is made in the analogue current transformer circuits where the differential phase current is
connected to the IED via an external high ohmic resistor. In REB650, a current input is used for
each phase and protection zone.
The package is configured and ready for direct use. Analogue inputs and binary input/output
circuits are pre-defined.
The configured IED can be changed and adapted to suit specific applications with the graphical
configuration tool.
Busbar protection REB650
Application manual

Application

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Section 2
Application
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