- Model: RET670 1MRK004816-AC
- Brand: ABB
- Series: Relion 670
- Core Function: Transformer differential and overcurrent protection
- Type: Pre-configured protection IED
- Key Specs: 2 winding / 1 breaker, Ver. 1.2
- Key Specs: IEC 61850, Modbus, DNP3
- Key Specs: Country of origin: Sweden (SE)
- Condition: New Original (New Surplus), not refurbished
- Key Technical Specifications
- Model: RET670 1MRK004816-AC
- Product ID: 1MRK004816-AC
- Manufacturer: ABB
- Family: Relion 670 series
- Version: Ver. 1.2
- Configuration: Two-winding transformer, single breaker (2W/1CB)
- Application: Transformer differential protection
- Core functions: Differential protection, earth-fault, distance, overcurrent, thermal, breaker failure
- Additional features: CT saturation restraint, inrush current restraint, 5th harmonic restraint, sensitive differential
- Communication: IEC 61850, Modbus, DNP3
- Control: Local and remote apparatus control; secure interlocking
- Mounting: DIN rail compatible
- Environmental: Shock/vibration per IEC 60068
- Measurement accuracy: ±1%
- Contacts: 2 SPDT output contacts
- Country of origin: Sweden
- Product Introduction
The ABB RET670 1MRK004816-AC is a pre-configured transformer protection IED used in high-voltage networks for two-winding, single-breaker applications. It is selected when the bay needs differential protection, controlled interlocking, and station communications aligned to IEC 61850.
Here’s the decision logic: compatibility first, then availability. This unit is typically chosen because its 2W/1CB, Ver. 1.2 configuration matches existing schemes and settings, and it supports DNP3/Modbus for SCADA integration. Verify firmware, wiring, and supply voltage before swap.
