Description
ABB REM543CM214AAAA Motor Protection Relay
Product Overview
The ABB REM543CM214AAAA is a fully digital, multifunction numerical motor protection relay from ABB’s Relion® 500 series. The complete order code, with the suffix
CM214AAAA, specifies a factory-preconfigured variant engineered for comprehensive protection, control, monitoring, and management of medium-voltage (MV) or critical high-power low-voltage motors. The base model REM543 identifies it as a dedicated motor protection terminal within the Relion platform.This intelligent electronic device (IED) consolidates the functions of numerous discrete relays (overload, differential, unbalance, etc.) and meters into a single, compact unit. It provides advanced protection algorithms, extensive measurement capabilities, programmable logic, and robust communication, serving as the primary guardian for motors against electrical, thermal, and mechanical stress, thereby preventing catastrophic failures and costly downtime.
Technical Specifications (Interpretation of Order Code)
Core Functional Summary (Standard for REM543):
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Protection: Thermal overload, locked rotor, start time supervision, unbalance, short-circuit (definite/time-inverse), earth fault (directional/non-directional), under/over power, under/over voltage, under/over frequency, temperature (via Pt100 input).
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Control: Direct-on-line, reversing, star-delta starting, soft starter/VFD interface. Integrated Configuration Logic (CFC) for custom control sequences.
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Measurement & Diagnostics: High-accuracy metering with power quality (harmonics). Motor running statistics (starts, running hours, stop time, thermal capacity). Event logging (SOE) and disturbance recording.
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Communication: Native IEC 61850 support. Typically also Modbus RTU, Profibus DP, DNP3.
Main Features and Advantages
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All-in-One Protection & Control: Integrates all essential motor protection, measurement, control, and monitoring functions into one device, drastically reducing panel space, wiring complexity, and component count.
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Advanced Thermal Model: Utilizes a sophisticated motor thermal model that accounts for positive and negative sequence current heating, providing optimal overload protection, preventing nuisance trips, and maximizing motor utilization and life.
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Intelligent Start Management: Accurately monitors and manages the start sequence, distinguishing between normal starts, re-acceleration, and stall conditions. Essential for motors with high inertia loads.
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Native Digital Integration (IEC 61850): As part of the Relion family, it natively supports IEC 61850, enabling seamless integration into digital substations and industrial networks with fast GOOSE messaging for interlocking and remote advanced diagnostics.
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Comprehensive Diagnostics & Recording: Detailed motor operation statistics, sequence of events (SOE), and high-resolution fault recording provide critical data for predictive maintenance, root cause analysis, and process optimization.
Application Fields
The REM543 is designed for the protection and control of medium-voltage or critical low-voltage three-phase induction and synchronous motors across heavy industries:
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Power Generation: Auxiliary motors (ID/FD fans, boiler feed pumps, circulating water pumps, condensate pumps).
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Oil & Gas: Pipeline pumps, compressors, drilling rig motors.
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Mining & Minerals: Crushers, grinding mills, conveyors, large fans.
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Water & Wastewater: Large raw water and sewage pumps.
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Chemical & Process Industries: Various process pumps, mixers, agitators, and compressors.
Related Products & System Integration
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Current & Voltage Transformers: CTs and VTs for protection and measurement inputs.
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Motor Control Center (MCC) or Switchgear: The cabinet housing the relay.
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Circuit Breaker or Contactor: The switching device controlled by the relay’s trip/output.
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Temperature Sensors: Pt100 RTDs for direct motor bearing or winding temperature measurement.
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Engineering & SCADA System: ABB PCM600 software for configuration, monitoring, and analysis. Integration with plant DCS/SCADA via IEC 61850 or Modbus.
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Communication Network: Switches, fiber optic cables for station and process bus networks.
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