ABB REF542 1VCR007346 G0028

Description

Detailed parameter table

ABB REF542 1VCR007346 G0028

Product introduction

The REF542 1VCR007346 G0028 is a advanced feeder protection relay from ABB, designed to safeguard medium-voltage and low-voltage distribution networks. As a key component in ABB’s Relion® product family, this relay combines precise protection, monitoring, and control capabilities to ensure the reliable operation of electrical feeders in industrial plants, power distribution systems, and commercial buildings.

What sets the REF542 1VCR007346 G0028 apart is its integration of multiple protection functions in a compact form factor. It not only detects and responds to faults such as overcurrent, earth faults, and voltage anomalies but also provides real-time data on feeder performance, enabling predictive maintenance and efficient network management. With seamless communication via IEC 61850 and other protocols, the REF542 1VCR007346 G0028 integrates smoothly into modern digital substations, acting as a smart node that connects field devices to control centers.

Core advantages and technical highlights

Comprehensive protection suite: The REF542 1VCR007346 G0028 offers a full range of protection functions tailored to feeder applications. Its overcurrent protection with adjustable time-current curves (IEC and ANSI standards) ensures selective tripping, isolating faults without disrupting the entire network. For example, in a manufacturing plant with multiple feeders, the relay can detect a fault in a specific machine feeder and trip only that circuit, keeping other production lines operational.

Digital integration capabilities: Equipped with IEC 61850 Ed. 2.1 compliance, the REF542 1VCR007346 G0028 supports seamless data exchange in digital substations. It can transmit real-time measurements, fault records, and status updates to SCADA systems or cloud platforms, enabling remote monitoring and control. This is particularly valuable in smart grids, where operators need centralized visibility of distributed feeder networks.

Flexible configuration: With 16 configurable digital inputs and 8 relay outputs, the REF542 1VCR007346 G0028 adapts to diverse application needs. Inputs can connect to contactors, switches, or sensors, while outputs control circuit breakers, alarms, or auxiliary devices. The relay’s programmable logic allows users to customize protection schemes—for instance, adding interlocks to prevent feeder energization during maintenance.

Robust performance in harsh environments: Rated to operate from -25 °C to +70 °C, the REF542 1VCR007346 G0028 withstands extreme temperatures in outdoor substations or industrial facilities. Its IP40 front protection shields against dust and accidental contact, ensuring reliability in dirty or high-vibration environments like mining operations.

Typical application scenarios

Industrial distribution networks: In a chemical plant, the REF542 1VCR007346 G0028 protects feeders supplying critical equipment such as reactors, pumps, and compressors. It monitors current and voltage levels, tripping instantly if an overcurrent fault (caused by a motor short circuit) is detected. The relay’s communication features send fault data to the plant’s DCS, helping engineers diagnose the issue and restore power quickly.

Commercial building electrical systems: Large office complexes or shopping malls rely on multiple feeders to distribute power to lighting, HVAC, and elevators. The REF542 1VCR007346 G0028 ensures these feeders operate safely—detecting earth faults in lighting circuits or phase imbalances in HVAC systems. Its integration with building management systems (BMS) via Modbus allows facility managers to monitor energy usage and optimize feeder loads.

Renewable energy installations: In solar farms, the REF542 1VCR007346 G0028 protects feeders connecting inverter stations to the grid. It guards against overvoltage from sudden load drops and coordinates with grid protection systems to ensure stable power injection. The relay’s IEC 61850 communication enables synchronization with renewable energy management systems, supporting grid code compliance.

ABB REF542 1VCR007346 G0028

Related model recommendations

ABB REF543 1VCR007347 G0029: A higher-capacity feeder relay with enhanced protection for high-voltage feeders, suitable for applications where the REF542 1VCR007346 G0028’s current rating is insufficient.

ABB REA101-AAA: An arc protection relay that complements the REF542 1VCR007346 G0028 in switchgear, adding arc flash detection for enhanced personnel safety.

ABB REX640: A bay controller that integrates with the REF542 1VCR007346 G0028 in digital substations, providing advanced control and automation functions.

ABB CT600: Current transformers paired with the REF542 1VCR007346 G0028 to ensure accurate current measurement for protection and monitoring.

ABB VT200: Voltage transformers that supply precise voltage signals to the REF542 1VCR007346 G0028, enabling reliable over/undervoltage protection.

ABB HMI600: A human-machine interface that displays real-time data from the REF542 1VCR007346 G0028, allowing local monitoring and configuration.

Installation, commissioning and maintenance instructions

Installation preparation: Mount the REF542 1VCR007346 G0028 in a panel or on a DIN rail, ensuring a minimum clearance of 50 mm around the device for ventilation. Verify the operating voltage matches the power supply (110 – 250 V AC/DC or 24 – 48 V DC) and use a dedicated circuit with a 1 A fuse. Connect current transformers (CTs) and voltage transformers (VTs) to the analog inputs, ensuring correct polarity. For communication, use shielded Ethernet cables for IEC 61850, grounding shields at both ends.

Maintenance suggestions: Inspect the REF542 1VCR007346 G0028 quarterly for loose connections or dust accumulation, cleaning with compressed air if needed. Test protection functions annually using a relay test set to verify trip times and thresholds. Check communication links to ensure data transmission is uninterrupted. Update firmware via the front USB port or Ethernet to access new features. If faults occur, use the relay’s built-in event log (storing up to 1000 events) to diagnose issues, and replace defective components with ABB-approved spares.

Service and guarantee commitment

The REF542 1VCR007346 G0028 is backed by a 5-year warranty, covering manufacturing defects and ensuring compliance with IEC standards. ABB’s global service network provides 24/7 technical support, including remote diagnostics and on-site assistance for complex issues.

Customers receive access to ABB’s Relion® software tools for configuration, testing, and data analysis. Optional service contracts offer preventive maintenance, calibration, and training to maximize relay performance. ABB guarantees compatibility with future IEC 61850 updates, ensuring the REF542 1VCR007346 G0028 remains a long-term asset in evolving electrical networks. This commitment reflects ABB’s dedication to delivering reliable protection solutions for critical infrastructure.