Product Overview
- Type: Numerical Protection & Control Relay
- Series: REF542 Plus (ABB Relion® 542 series)
Application:
- Feeder & motor protection in medium-voltage (MV) switchgear (e.g., UniGear, ZS1)
- Industrial power automation (process control, grid monitoring)
Key Features:
- Integrated protection, control, and measurement
- IEC 61850 communication (standard)
- LCD display for local HMI operation
- Modular design (expandable I/O)
Key Specifications
Parameter Value
- Rated Voltage 48–250V DC / 100–240V AC
Protection Functions Overcurrent, earth fault, thermal overload, voltage protection
Communication IEC 61850, Modbus RTU, Profibus
Digital Inputs (DI) 16 (expandable)
Digital Outputs (DO) 8 (expandable)
Mounting Panel-mounted (switchgear-compatible)
Ordering & Firmware Information
ABB Part No.: 1VCR007346 - Firmware Version: G0008 (specific software/hardware revision)
Typical Use:
- Retrofitting older REF542 units
- Compatible with ABB’s Relion® system
- Where to Find Documentation
ABB REF542 Plus Technical Manual (search ABB document 1VCR007346)
- Relion® 542 Product Guide (ABB website)
- IEC 61850 Configuration Guides (for communication setup)
