Overview

The ABB REF542PLUS 1VCR007346 is a multifunctional digital feeder terminal used in medium-voltage distribution systems, particularly within smart switchgear. It combines protection, control, measurement, and supervision into a single unit, streamlining substation automation and reducing panel complexity.

This terminal is part of ABB’s Relion® series, optimized for air-insulated switchgear (AIS) and gas-insulated switchgear (GIS). It supports IEC 61850, Modbus, and DNP3 protocols, enabling seamless integration into modern SCADA and substation automation systems.

Moreover, REF542PLUS offers flexible configuration, hot-swappable modules, and HMI interface options, making it ideal for both new installations and retrofit projects. Its compact footprint and rugged design ensure reliable operation in harsh environments, including high humidity, dust, and temperature extremes.

Technical Data

Typical Applications

• Feeder Protection in MV Switchgear: Protects and controls feeders in substations and industrial distribution systems.

• Smart Grid Integration: Communicates with SCADA systems using IEC 61850 for real-time monitoring and control.

• Transformer and Motor Protection: Configurable for multiple asset types beyond feeders.

• Substation Automation: Supports remote control, event logging, and fault diagnostics.

• Retrofit Projects: Ideal for upgrading legacy switchgear with modern digital functionality.

For instance, in a utility substation, the REF542PLUS can manage multiple feeders, detect faults instantly, and communicate with the central SCADA system for coordinated response. Therefore, it enhances grid reliability and operational efficiency.

FAQ

Q: What voltage range does REF542PLUS support?
A: It’s designed for medium-voltage applications, typically between 6 kV and 36 kV.

Q: Can it be used for transformer or motor protection?
A: Yes, it’s configurable for feeder, transformer, and motor protection.

Q: Does it support IEC 61850 communication?
A: Absolutely. It also supports Modbus and DNP3 protocols.

Q: Is it suitable for retrofit installations?
A: Yes, its modular design and compact size make it ideal for upgrades.

Q: What kind of HMI options are available?
A: It supports touchscreen or keypad-based interfaces for local contr