ABB REF615 HBFFAEAGNBC6BNA11G Advanced Feeder Protection Relay

• Current Input: Supports up to six current transformers (CTs) for accurate measurement of phase and ground currents, with a current range of 1 A or 5 A.
• Measurement Accuracy: High-precision measurement capabilities with ±0.5% accuracy for current and voltage measurements, ensuring reliable data for system monitoring.
• Communication Interfaces: Equipped with multiple communication protocols, including IEC 61850, Modbus TCP/RTU, DNP3, and PROFIBUS, enabling seamless integration into substation automation systems.
• Power Supply: Operates on a wide range of DC power supplies (24/48/110/220 VDC), with low power consumption for energy efficiency.
• Display: Features a large graphical LCD display for local monitoring and configuration, with the option to separate the display from the main unit for flexible installation.
• Environmental Tolerance: Designed to withstand harsh industrial environments with a wide operating temperature range (-25°C to +70°C) and high resistance to vibration and electromagnetic interference.

Functional Characteristics

• Comprehensive Protection Functions:
  • Three-phase overcurrent protection (50/51) with adjustable time-current characteristics, including definite time and inverse definite minimum time (IDMT).
  • Directional and non-directional earth fault protection (67/67N and 50N/51N) for accurate fault detection and isolation.
  • Thermal overload protection (49) for motors and feeders, preventing damage due to prolonged overcurrent conditions.
  • Undervoltage and overvoltage protection (27/59) to safeguard equipment from voltage abnormalities.
  • Phase imbalance protection (46) to detect and respond to unbalanced load conditions.
  • Breaker failure protection (50BF) to ensure reliable operation in case of circuit breaker malfunction.
• Advanced Control Features:
  • Local and remote control of circuit breakers and isolators, with synchronous checking for parallel operation.
  • Auto-reclosing functionality with configurable reclosing times and attempts, facilitating automatic clearance of temporary faults.
  • Supports interlocking and permissive functions for enhanced system safety.
• Precise Measurement Capabilities:
  • Measures phase currents, line and phase voltages, zero-sequence currents and voltages, frequency, power factor, active and reactive power, and energy consumption.
  • Provides real-time data for system monitoring and analysis, enabling proactive maintenance and optimization.
• Extensive Monitoring Functions:
  • Monitors breaker status, trip circuit status, and fuse health to ensure system integrity.
  • Performs internal self-tests to detect and report any device malfunctions, reducing downtime and maintenance costs.
  • Logs events and faults with timestamps for post-analysis and fault diagnosis.
• Event Recording and Analysis:
  • Equipped with a high-capacity event recorder capable of capturing detailed waveform data for fault analysis.
  • Supports triggered recording based on internal or external events, with adjustable recording length and sampling rates.
• Programmable Logic Control (PLC):
  • Offers extensive PLC capabilities for integrating automation and sequential logic control functions.
  • Supports custom logic programming using a user-friendly interface, enabling tailored solutions for specific applications.

Application Scenarios

• Feeder Protection in Distribution Networks:
  • Used in medium-voltage feeder circuits for protection against overcurrent, earth faults, and other abnormal conditions.
  • Suitable for distribution switchgear in single-bus, double-bus, and ring main unit configurations.
• Motor Protection in Industrial Applications:
  • Protects medium-sized and large three-phase asynchronous motors from overcurrent, thermal overload, and other faults.
  • Ensures safe and reliable operation of motors in manufacturing, petrochemical, and metallurgical industries.
• Transformer Backup Protection:
  • Provides backup protection for transformers in industrial and utility applications, enhancing system reliability.
• Substation Automation Systems:
  • Integral part of substation automation systems for utilities, facilitating seamless communication and coordination between different components.
  • Supports various communication protocols for integration into ABB or third-party automation systems, enabling remote monitoring and control.
• Renewable Energy Integration:
  • Supports the integration of renewable energy sources (e.g., wind, solar) into the grid, ensuring stable operation and protection of distributed generation assets.
  • Facilitates grid-connected and off-grid applications, enhancing energy efficiency and sustainability.
• Critical Infrastructure Protection:
  • Used in critical infrastructure sectors such as transportation, water treatment, and healthcare, where reliable power supply is essential.
  • Provides comprehensive protection and monitoring functions to ensure uninterrupted operation and minimize downtime.