Description
Key Technical Specifications
- Product Type: Numerical protection and bay control IED
- Application: MV switchgear feeders, transformer bays, motor protection systems
- System Architecture: Real-time microprocessor-based protection platform with DSP + control CPU design
- Auxiliary Supply: 24–250 V DC / 100–240 V AC (variant dependent, REF542plus family range)
- Frequency Rating: 50 / 60 Hz
- CT Inputs: 1 A / 5 A configurable secondary inputs
- VT Inputs: 100–110 V AC nominal (typical MV bay configuration)
- Protection Functions: Overcurrent, earth fault, directional protection, breaker failure, thermal logic
- Control Functions: Breaker control, interlocking logic, auto-reclose sequences
- Communication Protocols: IEC 61850, Modbus RTU/TCP, DNP3 (depends on hardware option)
- I/O Architecture: Modular binary inputs and relay outputs (configuration-dependent)
- Event Recording: Fault recorder with time-stamped disturbance logs
- HMI Interface: Local LCD display with keypad navigation
- Mounting: Panel-mounted switchgear door or cubicle installation
- Operating Temperature: −25°C to +70°C typical industrial envelope
Product Introduction
ABB REF542PLUS 2RCA029395 1VFSH048215V260 is a medium-voltage protection and bay control IED used in feeder and transformer switchgear applications. The REF542plus platform integrates protection algorithms, measurement, interlocking, and communication into a single substation automation node widely deployed in utility and industrial grids.
This configuration code reflects a project-specific hardware build. In practice, compatibility depends on firmware revision, I/O card population, and communication module type. Field experience shows that mismatched firmware or undocumented logic changes cause more commissioning delays than hardware failure.
