REQ650 ABB Breaker Protection Relay for Substations
Description
REQ650 ABB Breaker Protection Relay is an intelligent electronic device (IED) designed for substation breaker protection and control, part of the ABB Relion 650 series.
| Specification | Value |
|---|---|
| Switch Input Channels | 14 (configurable) |
| Switch Output Channels | 9 (configurable) |
| AC Input Measurement Accuracy | Better than class 0.5 |
| Communication Standard | IEC 61850 |
Key Features:
- Comprehensive protection including directional 4-stage overcurrent, zero-sequence overcurrent, overvoltage, undervoltage, and frequency change rate protection
- Integrated control, monitoring, measurement, and secondary circuit monitoring functions with PT loss protection
- Pre-configured logic and graphical configuration tool for quick commissioning
- Built-in fault recording and event logging for post-failure analysis
- Large LCD display and LED indicators for intuitive local and remote operation
Applications:
- Substation breaker protection and control for medium voltage power grids
- Integration into IEC 61850 compliant digital substation systems
- Protection of single bus, double bus, and bus-tie configurations
Related Models:
- REC650 (Bay Control Unit)
- REB650 (Busbar Protection Relay)
- REM650 (Motor Protection Relay)