ABB RET670 1MRK004816-CC Relion Transformer Protection Relay

Product Description

The RET670 (1MRK004816-CC) is an elite, high-performance Transformer Protection and Bay Control Intelligent Electronic Device (IED) engineered by ABB as part of the industry-leading Relion 670 series. 

Technical Specifications

• Manufacturer: ABB

• Product Series Family: Relion 670 Product Architecture

• Model Number Designation: RET670

• Global Ordering Code: 1MRK004816-CC

• Device Classification: Multi-Winding / Three-Winding Transformer Management & Bay Control IED

• Core Protection Array: High-speed transformer differential, restricted earth fault (REF), thermal overload, overexcitation ($V/Hz$), and directional overcurrent

• Substation Network Communications: Native IEC 61850-8-1 mapping (GOOSE and Client-Server MMS protocols)

• Logic Configuration: Freely programmable application logic via functional blocks

• Hardware Interface Platform: Scalable binary input/output and analog current/voltage channel matrix

• Product Shipping Weight: 6.0 kg (Approx. 13.23 lbs)

• Physical Protection Index: IP20/IP40 enclosure rating (panel mounting dependent)

Industrial Application Scenarios

The RET670 1MRK004816-CC is deployed in high-voltage (HV) and extra-high-voltage (EHV) utility substations, major thermal or nuclear generation step-up stations, and massive industrial plant substations (such as aluminum smelters and large-scale chemical complexes). In these high-capacity environments, multi-winding power transformers are critical, highly expensive grid links. The RET670 serves as the primary system guard. It continuously monitors the vector current balancing across all three winding sectors. If a phase-to-phase short, turn-to-turn fault, or insulation failure occurs inside the transformer tank, the IED isolates the unit within milliseconds, saving the core steel and oil chambers from catastrophic thermal explosions.