Description
System role in a substation
You will not find REC670 in a busbar protection role (that is REB670 territory). Instead:
Typical deployment points:
- Feeder outgoing bays (11–400 kV depending on utility design)
- Bus coupler / bus section breaker bays
- Transformer HV/MV side control bays
- Industrial intake substations
It is often the “logic center” of a bay, not the protection core of the busbar.
Key technical specifications (practical engineering view)
Based on Relion 670 platform configuration ranges:
- Series: ABB Relion 670
- Auxiliary supply: 48–250 V DC or 110–230 V AC/DC (variant dependent)
- Analog inputs: typically 8–12 current/voltage channels
- Digital inputs: ~17–23 (expandable depending on hardware)
- Digital outputs: ~16–24 configurable outputs
- Communication: IEC 61850 (GOOSE + MMS), IEC 60870-5-103/104, DNP3, Modbus RTU
- Event recording: COMTRADE fault records + event logs
- Measurement accuracy: class-level metering depending on configuration
- HMI: graphical LCD with bay single-line diagram
