TheABB RET670is a cutting-edge Intelligent Electronic Device (IED) specifically designed for the protection, control, and monitoring of two- or three-winding power transformers, autotransformers, and generator-transformer units. As a flagship member of the Relion® 670 series, it is engineered for high-voltage (HV) and extra-high voltage (EHV) applications.
Technical Specifications
Manufacturer:ABB
Series:Relion 670
Product Type:Transformer Protection and Control IED
Overexcitation (V/f) and Thermal Overload Protection
Directional/Non-directional Overcurrent and Voltage Protection
Control:Integrated Voltage Control (Tap Changer Management) and Synchrocheck
Communication:Full IEC 61850 compliance (Ed. 1 & Ed. 2), including GOOSE and Sampled Values
Shipping Weight:Approximately 6.0 Kg (depending on I/O configuration)
Lead Time:Estimated 6 - 10 weeks
Key Features & Engineering Advantages
Superior Sensitivity:The RET670 features advanced differential algorithms that provide high sensitivity for internal faults while remaining absolutely stable during external "through-faults" and transformer inrush conditions.
Integrated Voltage Regulation:It goes beyond simple protection by including comprehensive Automatic Voltage Regulation (AVR) functions for on-load tap changers (OLTC), eliminating the need for a separate voltage regulator.
Advanced Monitoring:Built-in disturbance recording and fault logs capture high-resolution data during grid events, allowing for deep forensic analysis of transformer performance and health.
Digital Substation Ready:Native support for the IEC 61850-9-2 process bus allows the RET670 to interface with merging units via fiber optics, significantly reducing copper cabling and improving data precision.
Cyber Security:Includes advanced security features such as central account management and logged security events to protect critical infrastructure from unauthorized access.
