ABB RET620E-1G

Function Features

• Advanced Protection Functions:
  • Differential protection (87T) with harmonic restraint
  • Restricted earth fault (64REF) protection
  • Overcurrent (50/51), overvoltage (59), and undervoltage (27) protection
  • Thermal overload protection (49)
• Monitoring & Control:
  • Real-time measurement of currents, voltages, power, and energy
  • Circuit breaker condition monitoring
  • Load tap changer (LTC) supervision
  • Fault recording (up to 128 events)
• Communication Capabilities:
  • Dual Ethernet ports (IEC 61850 Ed.2 compliant)
  • Modbus RTU/TCP protocols
  • DNP3.0 and IEC 60870-5-103/104 support
  • Optional fiber optic communication

Applications

• Power Transformers (2-winding and 3-winding)
• Generator Step-Up Transformers
• Industrial Plant Transformers
• Renewable Energy Substations

Supported Industrial Protocols

• Ethernet: IEC 61850 Ed.2
• Modbus: RTU/TCP
• DNP3.0
• IEC 60870-5-103/104
• RS485
• Optional Fiber Optic Communication

Expandability

ABB RET620E-1G offers excellent expandability, supporting various communication protocols and hardware configuration options. Its modular design allows users to choose different protection functions and communication interfaces based on their specific needs, enhancing system flexibility and adaptability .

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