Description
ABB REM543CG212AAAA
Technical Specifications:
- Measured Quantities: Three-phase currents, three phase-to-phase voltages, neutral current, residual voltage, frequency, and power factors.
- Calculated Parameters: Active power, reactive power, and energy.
- Communication: SPA bus or LON bus communication with higher-level equipment.
Functional Features:
- Machine-Specific Protection: Designed for selective short-circuit and earth-fault protection of rotating machines.
- Abnormal Condition Protection: Guards against overcurrent, unbalanced load, overtemperature, overvoltage, underexcitation, over/underfrequency, and generator motoring.
- Motor Supervision: Includes stall protection and a cumulative start-up counter for motor protection start-up supervision.
- Integrated PLC: Contains extensive PLC functions to integrate automation and sequence logic into a single unit.
Application Scenarios:
Small to medium power generation plants (diesel, hydro, steam) and heavy industrial motor applications such as large pumps, crushers, and mills.
Performance Parameters:
- Local Indication: Graphic MMI display indicates the status of disconnectors and circuit breakers locally.
- Remote Control: Allows opening and closing of controllable objects over the remote control system via serial bus.
Material Composition:
Industrial-grade electronic components housed in a robust, EMI-shielded enclosure to protect sensitive measurement circuits from high-voltage transients and electrical noise.
Structural Features:
Features a graphic MMI display and front-panel push-buttons for local control and parameter configuration. Designed to minimize hardwiring through advanced bus communication.
Working Principle:
Measures electrical parameters at the machine terminals and applies application-specific protection libraries. It continuously monitors the mechanical and electrical health of the rotating machine, executing precise trip commands to prevent catastrophic damage during abnormal operating conditions.
Installation Requirements:
Must be installed in a controlled environment, protected against moisture and mechanical stress. Visual inspections should be conducted regularly for signs of mechanical damage, dust accumulation, or corrosion.
Usage Precautions:
Handle with extreme care as it is a precision measuring instrument. Ensure environmental conditions (temperature, humidity, chemically active gases) match the specified technical data. Use compressed air to carefully remove dust from the internal case.
