ABB REF543 Feeder Protection and Control Relay – Reliable and Intelligent Power Distribution Protection

The ABB REF543 Feeder Protection and Control Relay is a comprehensive digital protection and control device designed for medium-voltage power distribution networks. Manufactured by ABB, a global leader in electrical automation and protection solutions, the REF543 provides advanced protection, measurement, control, and supervision for feeders in both industrial and utility environments.

Engineered with ABB’s Relion® technology, the REF543 ensures uninterrupted and safe operation of electrical networks. Its modular and user-friendly design makes it an excellent choice for modern substations and smart grid automation. The relay supports a wide range of communication protocols, offering reliable integration into SCADA and DCS systems.

Key Features of ABB REF543 Feeder Protection Relay

1. Comprehensive Protection Functions:
   Equipped with protection features for overcurrent, earth fault, phase unbalance, thermal overload, and breaker failure, ensuring full coverage of feeder protection needs.

2. Advanced Control Capabilities:
   Supports manual and automatic control of circuit breakers, isolators, and reclosers with secure interlocking and logic functions.

3. High Accuracy Measurement and Monitoring:
   Continuously measures current, voltage, frequency, power factor, and energy, providing precise data for performance analysis.

4. Reliable Communication and Integration:
   Supports communication protocols such as IEC 61850, Modbus®, Profibus, and SPA-bus, enabling seamless connection to substation automation systems.

5. Flexible Configuration:
   Configurable via ABB’s PCM600 or CAP 505 software, allowing users to easily adapt settings and logic to specific application requirements.

6. Event and Fault Recording:
   Built-in disturbance recorder and event logs help in fault analysis, operational tracking, and predictive maintenance.

7. Rugged and Compact Design:
   Designed for harsh industrial environments, the REF543 operates reliably under wide temperature ranges and electrical noise conditions.

8. User-Friendly Interface:
   Features a large LCD display and intuitive keypad, providing clear visualization of system parameters and easy local control.

9. Enhanced Operational Safety:
   Includes breaker failure protection, interlocking schemes, and load shedding capabilities to ensure safe network operation.

10. Future-Ready and Smart Grid Compatible:
    Fully compliant with smart grid standards, making it suitable for future-oriented digital substations.

Applications

• Feeder Protection for Medium-Voltage Networks:
  Protects outgoing feeders from overloads, short circuits, and ground faults in distribution systems.

• Industrial Power Distribution Systems:
  Ideal for manufacturing plants, process industries, and heavy-duty electrical systems requiring reliable protection.

• Substation Automation:
  Integrates easily into modern digital substations with intelligent monitoring and remote control capabilities.

• Utility and Infrastructure Projects:
  Widely used by power utilities, metro rail projects, and renewable power installations for reliable grid protection.

• Renewable Energy Networks:
  Ensures stable and safe operation of solar and wind farm feeders connected to grid systems.

Why Choose ABB REF543?

The ABB REF543 Feeder Protection and Control Relay stands out for its proven performance, superior flexibility, and robust design. With ABB’s long-standing expertise in electrical protection, the REF543 ensures system stability, fast fault isolation, and high operational reliability.

When sourced from Evaflux Private Limited, customers benefit from genuine ABB products, competitive pricing, and expert technical support. Evaflux specializes in supplying ABB protection relays, controllers, and industrial automation products across India and globally.

Contact Information

Evaflux Private Limited
📞 Phone: +91 7303573946
📧 Email: support@evaflux.com

Evaflux Private Limited is a trusted supplier and distributor of ABB protection relays, automation modules, and control systems. Contact us today for pricing, availability, and technical guidance on the ABB REF543 Feeder Protection Relay.