TheABB RET670 (1MRK004816-CB)is a premium intelligent electronic device (IED) within the Relion® 670 series, specifically optimized for the protection, control, and monitoring of 3-winding power transformers. This module addresses the complexities of high-voltage substation automation by integrating high-speed differential protection with comprehensive single-breaker control logic.
Detailed Technical Specifications
TheABB 1MRK004816-CBis defined by the following industrial-grade parameters:
Protection Scope:Designed for 3-winding transformers with a single-breaker configuration.
Differential Protection:Features restrained and high-set differential stages with 2nd and 5th harmonic switching.
Communication Protocols:Full support for IEC 61850 (Edition 1 & 2), Modbus, DNP3, and IEC 60870-5-103.
IEC 61850 GOOSE:High-speed peer-to-peer messaging for interlocking and protection coordination.
Power Supply Range:Universal 24–250 V DC or 80–240 V AC, 50/60 Hz.
I/O Capability:High-density binary inputs/outputs with configurable logic and status feedback.
Diagnostics:Integrated disturbance recorder (oscillography) and sequence-of-events (SoE) logging.
Hardware Interface:Large graphical LCD for SLD (Single Line Diagram) visualization and local control.
Cybersecurity:Role-based access control (RBAC), activity logging, and secure communication ports.
Mounting:Standard 19" rack-mount or flush panel-mount options.
Advanced Functionality and Substation Integration
TheRET670 1MRK004816-CBacts as a central hub for substation intelligence. Beyond primary protection, it provides sophisticated breaker management, including synchronism check, auto-reclosing (where applicable), and breaker failure protection. Its support for the IEC 61850 standard allows for "Digital Substation" deployment, where wiring complexity is reduced through Ethernet-based station and process buses. The unit's adaptability makes it a preferred choice for utility-scale power grids, large industrial complexes, and renewable energy integration projects.
