- Model: RET670 1MRK002816
- Brand: ABB
- Series: Relion 670
- Core Function: Advanced protection, control, and monitoring for power transformers
- Type: Transformer Protection IED
- Key Specs: Stabilized differential protection, IEC 61850, extensive customization
Condition: New Original (New Surplus), not refurbished. Limited stock available.
Compare this RET670 1MRK002816 to the 650 series and you see the difference in scale. Where 650 units cover standard needs, this one handles complex transformer setups in transmission and heavy industrial sites. It supports two- and three-winding transformers plus shunt reactors with full customization.
The RET670 1MRK002816 delivers fast stabilized differential protection including automatic CT ratio matching and vector group compensation. It fits applications needing extra I/O, programmable logic, or multiple protection layers. In field replacements we have seen it cut fault clearing times on critical assets while integrating cleanly into existing station buses.
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)
- Voltage Inputs: Multiple VT inputs for supervision
- Communication: IEC 61850, IEC 60870-5-103, Modbus, DNP3
- Event Recording: Advanced disturbance and event recorder
- Power Supply: 24-250 V DC / 100-240 V AC (verify nameplate)
- Operating Temperature: -25 to +55°C
- Mounting: 19″ rack or flush, modular
- Firmware: Record exact revision on receipt
- Additional: User-programmable logic and control functions
