ABB REM545BM222BAAA Relion® 545 Series Motor Protection Relay

Product Introduction
The ABB REM545BM222BAAA is a high-performance motor protection relay designed for comprehensive protection, control, measurement, and monitoring of medium-voltage synchronous and asynchronous motors. It ensures the stable operation of motors and power systems by providing advanced protection against various faults and conditions, such as overcurrent, overvoltage, undervoltage, thermal overload, and ground faults. The relay is part of ABB’s Relion® 545 series and is widely used in industrial automation and power distribution systems.

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Description

Technical Specifications

  • Rated Voltage: Up to 72 kV (via external CT/VT)
  • Rated Current: 1 A/5 A nominal (external CT)
  • Frequency Range: 45-65 Hz
  • Auxiliary Power Supply: 88-265 V AC / 100-250 V DC
  • Communication Protocols: IEC 61850-8-1, GOOSE, Modbus TCP, SNTP
  • Sampling Rate: 3.2 kHz, 16-bit A/D conversion
  • Protection Functions: Overcurrent (50/51), Ground Fault (21G), Overvoltage/Undervoltage (27/59), Thermal Overload (49), Phase Imbalance (46), and more.
  • Control Outputs: 6 x NO + 2 x NC, 8 A @ 250 V AC
  • Operating Temperature: -40°C to +70°C (display -20°C to +70°C)
  • Enclosure Rating: Front IP52, Rear IP30, semi-embedded or 19-inch rack mount
  • Dimensions: 177 x 265 x 225 mm (H x W x D)
  • Weight: 5.9 kg
  • Compliance: IEC 61850-10, IEC 60255-1, CE, UL, RoHS, GOST

Functional Characteristics

  • Comprehensive Protection: Provides a wide range of protection functions, including overcurrent, ground fault, overvoltage, undervoltage, thermal overload, phase imbalance, and frequency deviation protection.
  • High-Speed Fault Detection: Quickly detects and responds to fault conditions, minimizing downtime and preventing equipment damage.
  • Accurate Measurement: Utilizes high-precision digital signal processing technology for accurate measurement of current, voltage, frequency, power factor, and energy consumption.
  • Advanced Communication: Supports multiple communication protocols, enabling seamless integration with other intelligent devices and remote monitoring systems.
  • Flexible Configuration: Allows users to customize protection parameters, time-current curves, and logic configurations to meet specific application requirements.
  • Event Recording and Fault Analysis: Records fault events and waveforms for post-fault analysis, helping to identify the root cause of faults and improve system reliability.
  • User-Friendly Interface: Features a large LCD graphic display for intuitive operation and monitoring, with the ability to separate the display from the device for flexible installation.
  • Modular Design: Input/output boards are modularly designed for easy expansion and maintenance.

Application Scenarios

  • Power Generation: Protects motors in power generation plants, including boiler feed pumps, induced draft fans, and other critical equipment.
  • Industrial Automation: Safeguards motors in various industrial sectors, such as cement, metallurgy, petrochemical, automotive, and paper industries.
  • Oil and Gas: Used in offshore platforms and onshore facilities to protect motors in pumping stations, compressors, and other applications.
  • Water and Wastewater Treatment: Ensures the reliable operation of motors in water treatment plants, including pumps, aerators, and sludge handling equipment.
  • Infrastructure Projects: Applied in municipal, airport, port, and real estate sectors for motor protection in HVAC systems, elevators, and other building services.
  • Renewable Energy: Supports motors in renewable energy applications, such as wind turbines and solar tracking systems, ensuring efficient and reliable operation.
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