ABB REF543KB129AABA feeder protection and control relay
The ABB REF543KB129AABA is a compact, multi-functional feeder protection and control relay (part of ABB’s Relion® series, now Hitachi Energy) designed for medium‑voltage (1–36 kV) distribution networks. It integrates protection, measurement, control, and communication into a single device, delivering reliable, cost‑effective grid management for industrial and utility applications.
Key Applications
- Medium‑Voltage Distribution: 10 kV/35 kV feeder protection, fault location, isolation, and service restoration (Feeder Automation, FA).
- Industrial Power Systems: Petrochemical, metallurgy, mining, and manufacturing plants for motor, transformer, and capacitor bank protection.
- Renewable Energy: Wind farm and solar plant collector line protection, supporting LVRT/HVRT grid code compliance.
- Critical Infrastructure: Railway traction power, airport, and data center distribution systems requiring high reliability.
- Substation Automation: Integrated PLC logic for bay‑level control, reducing hardwiring and enabling seamless SCADA integration.
Core Specifications
| Category | Specification |
|---|---|
| Model | REF543KB129AABA |
| Manufacturer | ABB (now Hitachi Energy) |
| Type | Multi‑function Feeder Terminal / Protection Relay |
| Voltage Range | 1–36 kV (medium‑voltage networks) |
| Auxiliary Supply | 110–240 VAC / 110–220 VDC, 50/60 Hz |
| Current Input | 1 A or 5 A (selectable via DIP switch) |
| I/O Configuration | 12 Digital Inputs (DI) / 9 Relay Outputs (DO) |
| Protection Functions | 3‑phase overcurrent (instantaneous/timed/inverse), earth fault, directional power, thermal overload, breaker failure, optional arc flash |
| Communication | Ethernet (IEC 61850), Modbus RTU/TCP, SPA bus, LON bus, IEC 60870‑5‑103, DNP 3.0 |
| Programming | IEC 61131‑3 (Ladder Diagram, Structured Text) – integrated PLC |
| Operating Temperature | −20°C to +60°C (−4°F to 140°F) |
| Protection Rating | IP20 (indoor panel‑mount) |
| Certifications | IEC 60255, CE, EMC (IEC 61000‑4), RoHS |
| Dimensions (W×H×D) | 144 mm × 210 mm × 150 mm |
| Weight | ~3.5 kg (7.7 lbs) |
| Status | Obsolete (discontinued by ABB in 2022) |
Key Features
- All‑in‑One Protection: 20+ built‑in protection algorithms cover common grid faults, with customizable curves and motor thermal modeling.
- Rich Communication Suite: Native IEC 61850 Ethernet enables digital substation integration; supports legacy protocols for seamless migration.
- Integrated PLC: Eliminates need for external controllers, enabling complex automation logic (interlocks, sequence control) in one unit.
- Compact & Rugged: Space‑saving design, wide temperature range, and heavy‑duty construction suit harsh industrial environments.
- Proven Reliability: Field‑validated in thousands of installations; TÜV‑certified for critical power applications.
There are no reviews yet.