ABB RED670 Relay protection device

ABB RED670 Differential Protection Relay: Technical Overview

1. Technical Parameters

• Rated Values:
  • Voltage: 24–250 V DC (auxiliary supply), 100–240 V AC/DC (optional).
  • Current Inputs: 1 A or 5 A AC (configurable).
  • Frequency: 50/60 Hz (±10%).
  • Burden: < 0.2 VA per current input at rated current.
• Inputs/Outputs:
  • Binary Inputs: Up to 24 optically isolated inputs (48/110 V DC or 125 V AC).
  • Output Relays: Up to 14 configurable contacts (trip, alarm, control).
• Communication Interfaces:
  • Protocols: IEC 61850 (Edition 2), IEC 60870-5-103/104, Modbus RTU/TCP.
  • Ports: Fiber-optic (ST), Ethernet (RJ45), and serial RS485.
• Environmental Compliance:
  • Operating Temperature: -25°C to +70°C.
  • Standards: IEC 60255, IEC 61000 (EMC), IEC 60068 (vibration/shock).

2. Key Functions

• Differential Protection:
  • High-speed line differential protection using phase-segregated or current differential algorithms.
  • Supports both fiber-optic and multiplexed communication channels.
  • Built-in CT saturation detection and compensation.
• Backup Protection:
  • Distance Protection: Multiple zones with quadrilateral or mho characteristics.
  • Overcurrent Protection: Definite/Inverse Time (DTL/IDMT) for phase, earth, and sensitive earth faults.
  • Directional Power Protection: Reverse power, underpower, and overpower.
• Automation & Control:
  • Automatic Reclosing: Programmable sequences for single- or three-phase reclosing.
  • Synchrocheck: Voltage, frequency, and phase angle synchronization.
  • Load Shedding: Underfrequency/undervoltage-based load management.
• Monitoring & Diagnostics:
  • Measurement: Real-time display of currents, voltages, power, harmonics, and phasors.
  • Disturbance Recorder: Up to 64 fault records with COMTRADE format support.
  • Self-Testing: Continuous hardware/software integrity checks.

3. System Applications

• Primary Use Cases:
  • Overhead line and cable protection in transmission networks (up to 500 kV).
  • Busbar and transformer backup protection in substations.
  • Industrial power systems with distributed generation (e.g., wind/solar farms).
• Configuration & Integration:
  • Configured via PCM600 software (ABB’s protection and control tool).
  • Seamless integration with substation automation systems (SAS) via IEC 61850 GOOSE/SV.
  • Compatible with ABB’s Relion® 670 series for unified grid protection.
• Compliance & Certifications:
  • Meets global grid codes (e.g., NERC, ENTSO-E).
  • Certified for cybersecurity per IEC 62351 (data encryption, role-based access).

4. Advantages

• Reliability: Dual redundant power supplies and communication paths.
• Flexibility: Modular design for customizable I/O and communication modules.
• Cybersecurity: Supports role-based access control (RBAC) and HTTPS/SNMPv3.

Typical Applications

• Transmission Lines: High-speed differential protection for EHV lines.
• Renewables: Grid connection protection for wind/solar plants.
• Industrial Plants: Backup protection for critical feeders and transformers.

For detailed settings or application-specific configurations, refer to the ABB RED670 Technical Manual or consult ABB’s engineering support.