- Model: RET670 1MRK002816-AC
- Brand: ABB
- Series: Relion 670
- Core Function: Protection, control, and monitoring for power transformers and reactors
- Type: Transformer Protection IED
- Key Specs: Stabilized differential, customizable functions, IEC 61850 support
Condition: New Original (New Surplus), not refurbished. Limited stock available.
The RET670 1MRK002816-AC functions as a high-performance transformer protection IED in the Relion 670 series. It handles demanding protection tasks for two- and three-winding transformers, autotransformers, and shunt reactors in transmission and industrial substations.
This configuration emphasizes flexible protection with fast differential algorithms, automatic CT matching, and vector group compensation. It supports extensive I/O and programmable logic for site-specific needs. Procurement and maintenance teams favor it in setups where customization and reliability outweigh simpler alternatives.
Key Technical Specifications
- Application: 2/3 winding transformers, autotransformers, shunt reactors
- Protection Principle: Stabilized differential with 2nd/5th harmonic blocking
- Rated Frequency: 50/60 Hz
- Current Inputs: Multiple 1A/5A CT inputs (configurable per hardware)
- Voltage Inputs: Multiple VT inputs for supervision and backup
- Communication: IEC 61850, IEC 60870-5-103, Modbus, DNP3
- Event Recording: Advanced disturbance and event recorder with non-volatile memory
- Power Supply: 24-250 V DC / 100-240 V AC (verify nameplate)
- Operating Temperature: -25 to +55°C
- Mounting: 19″ rack or flush, modular design
- Firmware: Record exact revision on receipt (typical 1.x/2.x)
- Additional: User-programmable logic, extensive control capabilities
Incoming Inspection Verify packing list and any import declaration. Cross-check serial number against label for authenticity. Visual inspection confirms no corrosion, scratches, repair marks, or aging. Check for included accessories and documentation.
Live Functional Test Conducted on RET670-compatible test rack with simulator. Power-on self-check validates LEDs and boot behavior. Comms handshake tested on supported protocols. Full I/O simulation including differential functions. Continuous run exceeds 24 hours with temperature monitoring. Test Report generated; photo/video evidence available.
