ABB REM545BG229AABA

Description

ABB REM545BG229AABA – Motor Protection Relay for Industrial Applications

Product Description
The ABB REM545BG229AABA is an advanced, multifunctional motor protection and control relay from ABB’s Relion 545 series. This intelligent electronic device (IED) is designed for the comprehensive protection, control, and monitoring of medium-voltage (up to 7.2 kV) and high-power low-voltage induction and synchronous motors. As a self-contained unit, the ABB REM545 integrates protection, measurement, and control logic, replacing multiple discrete devices. It continuously monitors electrical parameters, executes protection algorithms, manages start/stop sequences, and provides critical data for condition-based maintenance. The specific product code BG229AABA defines the hardware configuration, communication options, and output relay configuration for this particular unit.

Product Parameters

• Type: Motor Protection Relay (IED).

• Series: ABB Relion 545.

• Product Code: REM545BG229AABA (suffix defines exact build).

  • B: Case style.

  • G229: Specific hardware/software package (defines I/O count, communication modules, etc.).

  • AABA: Option codes (e.g., specific firmware, language, auxiliary supply voltage).

• Protection Functions:

  • Thermal Overload Protection (I²t, T1-T6): With adjustable cooling time constants.

  • Stall & Start-up Supervision.

  • Short-Circuit Protection (50).

  • Earth-Fault Protection (50N/51N, 51G).

  • Phase Unbalance & Undercurrent Protection.

  • Motor Start Time Supervision & Restart Inhibit.

• Control Features:

  • Direct start, star-delta start, soft starter, and variable speed drive (VSD) supervision logic.

  • Programmable logic (for custom interlocking and sequences).

  • Circuit breaker and contactor control.

• Measurement: Three-phase currents, voltages, power (kW, kVAR), power factor, frequency, motor thermal capacity, number of starts.

• Communication Interfaces: As defined by the suffix; typically includes:

  • IEC 61850-8-1 (Station Bus over Ethernet).

  • Modbus RTU (RS-485).

  • Optionally PROFIBUS DP or EtherNet/IP.

• Display: Large graphical LCD with local push-button control.

Advantages and Features

• All-in-One Motor Management: The ABB REM545BG229AABA consolidates protection, control, and monitoring into one device, reducing panel space, wiring complexity, and commissioning time compared to using separate thermal overload relays, current relays, and metering devices.

• Advanced Thermal Model: Uses a precise, adjustable thermal model that accurately represents motor heating and cooling, providing optimal protection against overload and enabling maximum utilization of the motor.

• Comprehensive Diagnostics & Condition Monitoring: Provides real-time data on thermal capacity used, starts/hour, load history, and event logs. This enables predictive maintenance, helping to prevent unexpected motor failures.

• Seamless System Integration: Native support for IEC 61850 and other industrial protocols allows the REM545 to be easily integrated into modern substation automation systems (SAS), SCADA, or PLC networks for centralized monitoring and control.

• Flexible and Programmable: The built-in programmable logic allows engineers to implement custom control sequences, interlocks, and alarm schemes without requiring an external PLC for basic motor control logic.

Application Cases in Various Fields

• Water & Wastewater: Protection and control of critical raw water intake pumps, clean water pumps, and wastewater treatment aerators.

• Mining & Minerals: Protection of crushers, conveyors, ball mills, and slurry pumps in harsh mining environments.

• Oil & Gas: Motor protection for pumps, compressors, and fans on offshore platforms and in refineries.

• Power Generation: Protection of large induced draft (ID) fans, forced draft (FD) fans, boiler feed pumps, and cooling water pumps.

• General Heavy Industry: Protection of large fans, compressors, and extruders in chemical plants, pulp & paper mills, and metal processing.

Comparisons with Competing Products

• Siemens (SIPROTEC 7SK80): A direct competitor offering similar motor protection with IEC 61850. Choice often depends on the existing plant standard (ABB vs. Siemens) and preference for engineering tools (PCM600 vs. DIGSI).

• GE (Multilin 869): Another high-end motor protection relay. The ABB REM545 is often noted for its user-friendly local interface and strong IEC 61850 implementation.

• Schneider Electric (Sepam 80): Competes in the same segment. The REM545 benefits from ABB’s broad presence in industrial motor control and protection.

• Basic Thermal Overload Relays: The REM545BG229AABA offers vastly superior functionality, accuracy, communication, and diagnostic capabilities.

Selection Suggestions and Precautions

1. Decode the Suffix for Exact Specifications: The functionality of ABB REM545BG229AABA is defined by its suffix. Consult the ABB technical catalog to confirm the included communication protocols (IEC 61850, Modbus, PROFIBUS), I/O count, and auxiliary supply voltage (e.g., 24-48 Vdc, 110-240 Vac).

2. Accurate Motor Data is Critical: For the thermal model to work correctly, you must input precise motor data from the nameplate: Full Load Current (FLC), service factor, locked rotor current, hot/cold stall times, and number of allowed starts.

3. Proper CT Selection & Wiring: The accuracy of all functions depends on correctly specified Current Transformers (CTs). Ensure CT ratio, class, and burden are appropriate. Follow strict wiring practices to avoid open CT circuits.

4. Requires Specialized Engineering Tools: Configuration, setting, and integration of the REM545 require ABB’s PCM600 software and a solid understanding of motor protection principles and the selected communication protocol (especially IEC 61850 engineering).

5. Integration Planning: If using IEC 61850, plan the system engineering (SCL files) and GOOSE messaging for interlocking with other devices (e.g., circuit breaker relays) early in the project design.

6. Secure Configuration Files: Always create and archive the complete device configuration file from PCM600. This is essential for disaster recovery or for replicating settings on another unit.

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