ABB Relion REQ650, Applications Manual

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Section 2 Application
2.1 REQ650 application
The Breaker protection IED provides a standalone solution for applications, where the
functions related to the breaker is not preferred or suitable to be integrated into the
main protection function that is, the line distance protection for a line. The advanced
automatic reclosing, synchronizing, synchrocheck and energizing check functions of
the IED provides an optimized stand alone product. This IED also enables well-
structured and reliable protection and control systems especially in systems where
complete bay control functionality including interlocking is not required. Apparatus
control for up to 8 apparatuses with interlocking can be included in one IED by
function block engineering.
The IED provides backup to the main protection with redundant protection and
control functions.
Three configured packages have been defined for the following applications:
• A01: Backup protection functions in a single busbar single breaker bay with
three-phase trip.
• A11: Backup protection functions in a single busbar single breaker bay with
single-phase trip.
• B11: Backup protection functions in a double busbar single breaker bay with
single-phase trip.
The backup protection is mainly based on current and voltage functions. In line
protection applications, autoreclosing with or without synchrocheck is available.
The IED is delivered configured and ready for use in the power system. Analogue
inputs and binary inputs/outputs circuits are pre-defined.
The configured IED can be modified and adapted to suit specific applications with
PCM600 and the graphical configuration tool ACT for example, using the glue logic
and adjusting the parameter settings.
1MRK 505 291-UEN A
Section 2
Application
21
Application manual