ABB REF542PLUS 1VCR007346 – Multifunction Protection and Control

ABB REF542PLUS 1VCR007346 – Multifunction Protection and Control Relay

Product Overview
The ABB REF542PLUS 1VCR007346 is a versatile protection and control relay designed for medium-voltage electrical systems in industrial, utility, and infrastructure applications. Part of ABB’s Relion® product family, this device integrates advanced protection functions, automation capabilities, and communication protocols to ensure safe and efficient operation of power distribution networks, motors, transformers, and generators.

Key Features

1. Comprehensive Protection Functions
   • Electrical Protection: Overcurrent, earth fault, thermal overload, under/overvoltage, frequency protection, and arc-flash detection (optional).
   • Motor Protection: Start supervision, stall protection, and phase unbalance for motor-driven systems.
2. Advanced Automation & Control
   • Logic Programmable: Customizable logic (IEC 61131-3 compliant) for automation sequences, interlocking, and load shedding.
   • Measurement & Monitoring: Real-time data on voltage, current, power, energy, harmonics, and fault records.
3. Communication & Integration
   • Protocol Support: IEC 61850, Modbus RTU/TCP, DNP3, PROFIBUS, and IEC 60870-5-103/104 for seamless integration into SCADA, DCS, and smart grids.
   • HMI Interface: Built-in LCD display and keypad for local configuration and diagnostics.
4. Robust Design
   • Environmental Resilience: Operates in -25°C to +70°C with high immunity to EMI/RFI interference.
   • Redundancy: Optional dual-power supply and communication redundancy for critical applications.
5. Safety & Compliance
   • Certifications: Complies with IEC 60255, UL 508, CE, and ATEX (for hazardous areas).
   • Arc-Flash Safety: Reduces incident energy through fast tripping (optional arc detection sensors).

Applications

• Power Distribution: Protection of switchgear, busbars, and feeders in substations.
• Industrial Plants: Motor protection in manufacturing, mining, and oil/gas facilities.
• Renewable Energy: Grid integration and protection for solar/wind farms.
• Infrastructure: Backup power control for hospitals, airports, and data centers.

Technical Specifications

• Input Ratings: 
  • Voltage: 100–690 V AC (phase-to-phase).
  • Current: 1 A or 5 A (via CTs).
• Power Supply: 24–250 V DC or 48–240 V AC.
• Relay Outputs: 6–8 configurable relay contacts (NO/NC).
• Communication Ports: Ethernet, RS-485, and fiber-optic options.
• Mounting: DIN rail or panel-mounted (compact 1/4 or 1/2 module size).

Advantages

• All-in-One Solution: Combines protection, control, and metering in a single device.
• User-Friendly: Intuitive configuration via PCM600 software or local HMI.
• Future-Proof: Firmware-upgradable for evolving grid and industry standards.
• Energy Efficiency: Supports power quality monitoring for compliance with energy regulations.

Typical Use Cases

• Replacing electromechanical relays with a digital, multifunction alternative.
• Implementing arc-flash protection to enhance worker safety.
• Automating load transfer in microgrid or islanding operations.

Ordering & Support

• Part Number: REF542PLUS 1VCR007346 (verify configuration and optional features with ABB).
• Packaging: Includes the relay unit, mounting hardware, and documentation.