ABB REF615C_D Numerical Relay | SCADA & Automation Interface

Product Overview

The ABB REF615C_D represents the high-performance standard in the Relion® 615 product series, specifically engineered for three-phase feeder protection in medium-voltage distribution systems. This numerical relay provides a comprehensive suite of protection, control, and monitoring functionalities essential for modern smart grid infrastructures. It handles complex power distribution tasks by combining high-precision measurement with fast-acting logic, ensuring the stability of utility networks and industrial power plants.

Condition: 100% Brand New Original.

Technical Specifications

The REF615C_D maintains Class 1 accuracy across a wide range of industrial electrical parameters.

Engineering Advantages

• Precision Protection Coordination: The REF615C_D offers selectable time delays ranging from 0.05 to 60 seconds. This granular control allows protection engineers to fine-tune tripping sequences, ensuring that downstream faults trigger local breakers without causing unnecessary widespread system outages.

• Smart Grid Readiness: This relay incorporates native communication interfaces for seamless integration into SCADA and substation automation systems. It transmits real-time telemetry and event logs, enabling remote monitoring and rapid fault location in geographically dispersed distribution networks.

• Streamlined Commissioning: The built-in test function simplifies diagnostics during initial setup and periodic maintenance. Field technicians utilize these integrated capabilities to verify logic operation without requiring extensive external secondary injection equipment.

• Extreme Environmental Resilience: With an operating temperature range of -25°C to +70°C, the REF615C_D functions reliably in unheated outdoor kiosks or high-temperature industrial switchgear rooms. The robust internal hardware maintains Class 1 accuracy even under fluctuating ambient conditions.

• Visual Fault Analysis: High-visibility LED indicators provide instantaneous feedback on relay status and trip events. This visual interface allows onsite operators to identify the nature of a fault (e.g., overcurrent vs. earth fault) at a glance, accelerating the restoration of power.

FAQs

Q: Can the REF615C_D be integrated into an existing IEC 61850 network?

A: Yes. As part of the Relion family, the REF615C_D typically supports modern communication protocols including IEC 61850. This facilitates high-speed peer-to-peer communication (GOOSE) and vertical integration into your automation backbone.

Q: Does this relay support both 50Hz and 60Hz systems?

A: The REF615C_D covers a frequency range of 45–65 Hz, making it universally compatible with global power standards. It automatically handles frequency fluctuations within this window without degrading protection accuracy.

Q: What is the benefit of the adjustable 0.5–60 A current range?

A: This wide range allows for versatile application across various feeder sizes. Engineers can scale the current settings to match specific transformer or cable ratings, ensuring the relay remains sensitive enough to detect low-level faults while preventing nuisance trips during peak load.

Q: Is the REF615C_D a direct replacement for older REF615 variants?

A: While the C_D suffix denotes a specific functional configuration, the physical footprint remains consistent with the Relion 615 series. Always verify your specific terminal mapping and protection logic requirements when performing a retrofit.