The ENTEC ETRTU 3000 is a centerpiece of modern Distribution Automation Systems (DAS), specifically engineered by South Korea’s ENTEC Electric & Electronic to provide robust intelligence at the distribution level. This unit acts as a Feeder Terminal Unit (FTU), bridging the gap between field-level power equipment and the central SCADA system, ensuring grid stability through high-speed fault detection and automated control.

Precision Monitoring and Measurement

The ETRTU 3000 provides utility operators with laboratory-grade measurement accuracy (Class 0.5 or 1.0) for critical parameters including Phase/Neutral Current, Phase-to-Phase/Phase-to-Ground Voltage, Active/Reactive/Apparent Power, and Frequency. This comprehensive data set enables precise load management and power quality analysis across the distribution network. The unit also features an advanced Event Sequence (SOE) recorder capable of storing up to 1024 events with 1ms resolution, essential for post-fault analysis.

Advanced Fault Protection Logic

Designed to handle the complexities of overhead and underground feeders, the ETRTU 3000 incorporates sophisticated fault detection algorithms. It features multiple protection curves and specialized logic for Sensitive Earth Faults (SEF), helping to identify hazardous high-impedance faults that traditional RTUs might miss. Furthermore, its integrated inrush current restraint technology prevents nuisance tripping during transformer energization or line reclosing.

Communication and Integration

• Standardized Protocols: Fully compliant with DNP3.0 and IEC 60870-5-104, ensuring seamless integration into global utility networks.
• Rugged Hardware: Built for outdoor reliability, featuring a wide operating temperature range and high resistance to surge and EMI/RFI.
• Battery Management: Includes an intelligent battery charging and monitoring system to ensure the RTU remains operational during total line outages.
• Remote Management: Supports remote firmware upgrades and configuration changes, reducing the need for costly site visits.

Typical Applications

• Overhead Line Automation: Control and monitoring of Pole-Top Load Break Switches (LBS) and Reclosers.
• RMU Monitoring: Interfacing with Ring Main Units in urban underground distribution networks.
• Fault Location: Acting as a Fault Indicator (FI) hub to accelerate grid restoration.
• Smart Grid Integration: Providing real-time telemetry for distributed renewable energy resources.