ABB REF610C11HCNR Feeder Protection Relay

• • Measurement Voltage (PT Input): 100 V or 110 V (line voltage) or 57.7 V (phase voltage)
  • Rated Current (CT Input): 1 A or 5 A (configurable)
• Frequency Range: 50/60 Hz (user-selectable)
• Measurement Accuracy: High-precision measurement of electrical parameters such as current, voltage, power factor, and energy.
• Communication Interfaces:
  • Optional: MODBUS RTU, IEC 60870-5-103, DNP 3.0, or IEC 61850 (for advanced system integration).
• Mechanical Design:
  • Compact and space-saving design suitable for panel mounting.
  • Operating Temperature: -25°C to +70°C (standard), -40°C to +85°C (extended option).
  • Protection Class: IP40 (front panel).

Functional Features

• Protection Functions:
  • Three-phase non-directional overcurrent protection with definite time or IDMT (Inverse Definite Minimum Time) characteristics.
  • Non-directional earth fault protection with definite time or IDMT characteristics.
  • Phase discontinuity protection.
  • Three-phase cable thermal overload protection.
  • Arc protection with optional arc sensors.
  • Auto-reclosing function (1-3 times).
  • Breaker failure protection.
• Control and Monitoring:
  • Circuit breaker control and status monitoring.
  • Real-time monitoring of electrical parameters.
  • Event recording for fault analysis.
  • Disturbance recorder with adjustable sampling rate.
• Communication Capabilities:
  • Seamless integration with substation automation systems via standard communication protocols.
  • Supports remote monitoring and control.
• Self-Supervision:
  • Continuous monitoring of relay hardware and software.
  • Non-volatile memory for storing event logs, settings, and disturbance recorder data.
• User Interface:
  • Alphanumeric LCD with backlight and automatic contrast control.
  • Navigation buttons for easy operation and configuration.
  • Programmable LED indicators for quick status indication.

Application Scenarios

• Medium-Voltage Distribution Networks:
  • Protects feeders in primary and secondary distribution substations.
  • Ensures reliable operation of overhead lines and cable feeders in solidly earthed, resistance-earthed, or isolated networks.
• Utility Substations:
  • Safeguards incomers and outgoers in medium-voltage配电变电站 (distribution substations).
• Industrial Power Systems:
  • Applied in manufacturing plants, petrochemical facilities, and other industrial settings to prevent electrical faults from impacting production equipment.
• Renewable Energy Integration:
  • Supports grid connection and protection for wind and solar power generation systems.
• Infrastructure Projects:
  • Used in railways, airports, and data centers for critical power distribution protection.