Product Overview
- Type: Numerical Protection Relay
- Series: REF542 Plus (Part of ABB’s Relion® 542 series)
Application:
- Feeder protection in MV switchgear (UniGear, ZS1)
- Motor/generator protection
- Industrial power system automation
Key Features:
- Integrated protection, control, measurement
- IEC 61850 communication
- HMI with LCD display
- Technical Specifications
Parameter Value
- Input Voltage 48-250V DC/100-240V AC
Protection Functions Overcurrent, earth fault, thermal overload
Communication IEC 61850, Modbus, Profibus
I/O Capacity 16 DI / 8 DO (expandable)
Mounting Panel-mounted (switchgear integration)
Ordering Information
- ABB Article No.: 1VCF750090R0802
- Software Version: g0004 (firmware-specific)
Where to Find Documentation
- ABB’s Relion 542 Technical Manual
- Protection Relay Selection Guide
- ABB Automation Support Portal
Note: The “g0004” suffix typically indicates a specific hardware/software configuration. For exact firmware details, contact ABB support with the full device serial number.