ABB REF542PLUS 1VCF752000 Feeder Terminal Unit (FTU)

• • 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 (adaptive)
• Measurement Accuracy: High-precision measurement of electrical parameters such as current, voltage, power factor, and energy.
• Communication Interfaces:
  • Standard: RS485 (Modbus RTU or IEC 60870-5-103)
  • Optional: Ethernet (IEC 61850, DNP3.0, Modbus TCP)
• Mechanical Design:
  • Installation: Panel mounting (IEC 60255 standard)
  • Operating Temperature: -25°C to +70°C
  • Protection Class: IP40 (front panel), IP20 (terminal area)

Functional Features

• Protection Functions:
  • Overcurrent protection (directional and non-directional options)
  • Instantaneous overcurrent (I>>)
  • Time-overcurrent (I>)
  • Inverse time-overcurrent (IDMT)
  • Earth fault protection (sensitive earth fault, directional earth fault)
  • Overvoltage/undervoltage protection (U>, U<)
  • Overfrequency/underfrequency protection (F>, F<)
  • Breaker failure protection
  • Motor protection (e.g., start timeout, blocked rotor protection)
  • Transformer protection (optional differential protection)
• Control and Monitoring:
  • Switchgear control (local/remote operation of circuit breakers and disconnectors)
  • Real-time monitoring of electrical parameters (current, voltage, power, power factor, frequency)
  • Energy metering (optional)
  • Fault recording (event and waveform recording for fault analysis)
• Communication Capabilities:
  • Seamless integration with substation automation systems via standard communication protocols.
  • Supports data remote transmission and system-level coordination.
• Self-Diagnostic Functions:
  • Spring charging time monitoring
  • Trip coil status monitoring
  • Automatic fault identification and location
• User Interface:
  • High-definition LCD touchscreen with multi-language menu support
  • Intuitive graphical interface for easy operation and configuration

Application Scenarios

• Medium-Voltage Power Distribution Networks:
  • Used in feeder protection to quickly isolate faults and minimize outage areas.
• Substation Automation:
  • Protects transformers and switchgear, ensuring safe and reliable operation of substations.
• Industrial Power Systems:
  • Applied in chemical plants, manufacturing industries, and other industrial settings to prevent electrical faults from impacting production equipment.
• Renewable Energy Integration:
  • Suitable for wind power and photovoltaic power generation systems, facilitating grid connection and stable operation.

Advantages

• High Reliability:
  • Designed with anti-interference circuits and industrial-grade components to withstand harsh operating conditions such as high temperatures and dust.
• Flexibility and Scalability:
  • Supports software-defined functions, allowing customization of protection schemes and control logic based on specific requirements.
  • Modular design enables easy expansion with additional I/O modules (e.g., 4-20 mA analog inputs) to accommodate various sensors.
• User-Friendly:
  • Equipped with a high-definition LCD touchscreen, supporting multi-language menus and graphical operation interfaces for intuitive use.
• Seamless Integration:
  • Compatible with ABB or third-party switchgear, supporting integration with devices such as the JSR3T series relays.
  • Adapts to multiple industrial communication protocols, facilitating data exchange with SCADA systems.