ABB 1VCR007346G0004 Feeder Terminal

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1. Product Information & Specifications

• Product Name: ABB REF542PLUS Feeder Terminal

• Model / Part Number: 1VCR007346G0004 (REF542PLUS series)

• Function Type: Digital Feeder / Bay Control Terminal, integrating protection, measurement, control, and supervision

• Auxiliary Supply Voltage: Typically 110–240 V DC (for certain panel versions)

• Operating Temperature Range: –25 °C to +70 °C

• Communication Protocols: IEC 61850, Modbus, DNP3

• Dimensions: ~144 mm × 144 mm × 155 mm (W × H × D)

• Ingress / Protection Rating: Front panel IP54 (for some versions)

• Main Functions:

  • Feeder protection

  • Transformer protection (configurable)

  • Motor protection (configurable)

  • Current and voltage measurement

  • Monitoring, self-diagnosis, event and fault recording

• Terminal Connections: Supports CT (current transformer) and PT/VT (voltage transformer) inputs; includes terminal wiring diagrams

• Time Synchronization: Equipped with time-synchronization capability for accurate fault / event timestamping

• Protection / Measurement Thresholds: Supports configurable thresholds for overcurrent, earth fault, phase unbalance, etc.

2. Advantages & Key Features

1. Integrated Design: Combines protection, measurement, control, and supervision in one module, reducing panel complexity and wiring.

2. Strong Communication Capability: Supports modern automation protocols (IEC 61850, Modbus, etc.), making integration into SCADA / substation automation flexible.

3. Wide Temperature Tolerance: Operates reliably across a broad temperature range, suitable for harsh industrial environments.

4. Compact Footprint: Small size with flexible mounting options (panel or DIN rail), saving space in switchgear.

5. High Reliability: Built for feeder protection with self-diagnosis and event logging to improve operational visibility and robustness.

6. Good Environmental Protection: IP54-rated front panel in some versions provides resistance to dust and moisture.

7. Flexible Protection Schemes: Can be configured for feeder, transformer, or motor protection depending on application needs.

8. Time Synchronization: Accurate event/fault timestamping enables better fault analysis and system diagnostics.

3. Application Areas

• Medium-voltage (MV) switchgear / distribution networks for feeder protection

• Substation automation systems for remote monitoring and control

• Industrial power systems (factories, plants) for protecting feeders, motors, transformers

• Smart grid / microgrid applications where digital protection and communication are required

• Retrofit projects upgrading legacy protection with digital protection terminals

4. Precautions & Maintenance Guidelines

1. Correct Selection: Ensure the right protection scheme (feeder / transformer / motor) and match system voltage / CT / VT ratings.

2. Stable Power Supply: Provide a stable auxiliary DC supply (110–240 V) to avoid terminal instability.

3. Communication Cabling: Use shielded, well-grounded communication cables to reduce EMI interference.

4. Time Synchronization: Configure a reliable time-sync source (SNTP, IRIG, etc.) if using timestamped event recording.

5. Environmental Consideration: Consider installation environment (temperature, humidity, ingress protection) when mounting.

6. Periodic Inspection: Regularly inspect terminal connections, CT/VT wiring, and review fault/event logs.

7. Power-Off Maintenance: Always de-energize the terminal before performing wiring or maintenance.

8. Firmware / Software Updates: Regularly check for and apply firmware updates per ABB recommendations to maintain security and functionality.

The structure and details of the product：

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