Description
1. Product Title
ABB REM545AG228AAAA‑ Machine Protection Terminal
2. Product Overview
The REM545AG228AAAA is a high‑performance numerical machine protection terminal belonging to ABB Relion series, built for rotating machinery protection, measurement, control and condition monitoring. It integrates multi‑stage protection algorithms, programmable logic functions and high‑precision metering to handle common machine faults such as overcurrent, earth‑fault, phase unbalance, stall and overtemperature. This device eliminates the need for multiple discrete relays, reducing cabinet complexity and wiring workload. Designed for demanding industrial environments, it delivers fast fault response and reliable data logging, solving risks of unexpected downtime and equipment damage for medium‑voltage motors and small‑to‑medium generators.
3. Technical Specifications
- Brand: ABB
- Model: REM545AG228AAAA
- Warranty: One Year
- Condition: 100% New & Original
- Input/Output: Multi‑channel digital inputs / relay outputs; supports RTD and analog measurement for temperature monitoringeero
- Operating Temp: ‑20 °C ~ +70 °C (operational); ‑40 °C ~ +85 °C (storage)
- Communication: SPA bus, LON bus, Modbus RTU; optional IEC 61850 via communication adaptoreero
- Weight: Approximately 7.7 kgABB Group
- Functions: Machine protection, metering, sequence control, disturbance recording, self‑supervision, built‑in PLC logiceero
4. Application Scenarios
- Power Generation Plants: Deployed for protection of small‑medium synchronous generators and generator‑transformer units in hydro, diesel and steam power plants, covering abnormal excitation, over‑frequency and motoring protection for rotating equipmentABB Group.
- Heavy‑Industry Motor Control: Protect large medium‑voltage asynchronous and synchronous motors driving crushers, mills and conveyors in mining facilities; provides stall supervision and startup monitoring to avoid motor burnout during heavy‑load startup cycles.
- Oil & Gas Facilities: Applied for critical motor protection for compressors, pumps and fans within refineries and auxiliary process systems, ensuring safety and continuous operation of rotating assets under harsh site conditions.
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