The ABB REF542PLUS is a highly advanced feeder protection and bay control unit designed for medium-voltage power distribution systems. It integrates protection, control, measurement, monitoring, and communication into a single compact device, making it a cornerstone solution for modern substation automation and industrial power systems.
Engineered for mission-critical environments, the REF542PLUS is widely used in utilities, oil & gas, petrochemical plants, and power generation, where system reliability, fast fault detection, and real-time control are essential. It significantly reduces system complexity by replacing multiple discrete devices with one intelligent electronic device (IED).
Technical Specifications (Comprehensive Protection & Control Platform)
| Parameter | Details |
|---|---|
| Model | REF542PLUS |
| Brand | ABB |
| Product Type | Feeder Protection & Bay Control Unit |
| Voltage Class | Medium Voltage (1–50 kV) |
| Function | Protection, control, monitoring, automation |
| Protection Features | Overcurrent, earth fault, voltage, thermal, breaker failure |
| Measurement | Voltage, current, power, frequency, energy |
| Communication | IEC 61850, Modbus, Profibus, DNP3 |
| I/O Capacity | Up to 16 DI / 8 DO (configurable) |
| Power Supply | 24 V DC or 100–240 V AC/DC |
| Power Consumption | ≤10–15 W |
| Operating Temperature | -25°C to +70°C |
| Protection Rating | IP54 (front), IP20 (rear) |
The device supports advanced automation functions including auto-reclosing, fault recording, and power quality monitoring, making it suitable for smart grid applications.
Physical Dimensions & Weight
| Item | Specification |
|---|---|
| Dimensions (W × H × D) | ~223 × 179 × 150 mm |
| Weight | ~1.2 – 5 kg (depending on configuration) |
Its compact modular design allows easy installation in switchgear panels or control cabinets.
Recommended Related Models (ABB Protection & Control Ecosystem)
- ABB Relion 615 Series – Protection relays for distribution networks
- ABB REF615 – Feeder protection relay
- ABB REM615 – Motor protection relay
- ABB RET615 – Transformer protection relay
- ABB COM600 – Substation automation gateway
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