ABB REM545BG229AABA

Description

Product Description

The ABB REM545BG229AABA is a dedicated motor protection and management relay from ABB’s comprehensive REM540 series, specifically engineered for the protection, control, and monitoring of medium voltage induction and synchronous motors in industrial applications. This microprocessor-based intelligent electronic device provides comprehensive motor protection functions including thermal overload, locked rotor, starting time supervision, and stator earth fault protection within a single compact housing. The ABB REM545BG229AABA incorporates ABB’s decades of motor protection expertise into a field-proven platform suitable for critical motor drives in petrochemical, mining, water, and power generation facilities. Designed for switchgear mounting, this relay communicates via multiple protocols including Modbus RTU and Profibus DP, enabling seamless integration with plant DCS and SCADA systems. The ABB REM545BG229AABA includes extensive measurement capabilities including three-phase currents, voltages, power, power factor, and energy, eliminating separate metering instruments.

Product Parameters

• Model: ABB REM545BG229AABA
• Product Type: Motor Protection and Management Relay
• Application: Medium voltage induction and synchronous motors
• Protection Functions: Thermal overload (49), locked rotor (48/51LR), starting time supervision (48), short circuit (50), earth fault (50N/51N), phase unbalance (46), undercurrent (37), overvoltage (59), undervoltage (27), reverse power (32R), frequent start (66)
• Control Functions: Local/remote control, interlocking, emergency start
• Monitoring: Motor run hours, start counter, thermal capacity usage, bearing temperature (RTD inputs)
• Measurement: I, V, f, P, Q, S, PF, energy, harmonics up to 15th
• Accuracy: Current/voltage ±0.5%, power ±1.0%
• Analog Inputs: 4 current + 4 voltage, 1 A/5 A CT, 100–230 V AC PT
• RTD Inputs: 6 x RTD (Pt100, Ni100) for bearing/stator temperature
• Binary Inputs: 8 x opto-isolated, 24–250 V DC/AC
• Output Relays: 8 x programmable Form C, 5 A
• Communication: RS-485 Modbus RTU, Profibus DP (optional)
• Display: Backlit LCD, 4 lines x 20 characters, local HMI
• Power Supply: 80–265 V AC/DC, 18–75 V DC (variant dependent)
• Mounting: Flush panel mount, 144 x 144 mm case
• Operating Temperature: -10°C to +55°C
• Certifications: CE, UL, CSA, ATEX Zone 2, IEC 60255, IEEE C37.90

Advantages and Features

The ABB REM545BG229AABA delivers exceptional motor protection selectivity through its adaptive thermal model that continuously calculates motor thermal capacity based on positive, negative, and zero sequence currents, accurately reflecting true stator heating under unbalanced voltage conditions. Unlike generic overcurrent relays applied to motor protection, the ABB REM545BG229AABA incorporates motor-specific starting characteristics including voltage-dip dependent start inhibit and learned start current profiles that adapt to actual driven load conditions. The integrated RTD monitoring continuously tracks bearing and stator winding temperatures, providing early warning of mechanical or insulation degradation before thermal overload protection would operate. Comprehensive motor diagnostics include start trend analysis, thermal capacity usage history, and vibration monitoring via analog inputs. The ABB REM545BG229AABA features programmable frequent start protection that prevents motor start attempts exceeding manufacturer-specified limits, extending motor insulation life. Its waveform capture capability records up to 10 fault events with 32 samples/cycle resolution, enabling detailed post-fault analysis of motor electrical behavior during disturbances. The relay’s local HMI provides plain language display of protection status, measurements, and alarm messages without requiring external software or interpretation of LED codes.

Application Cases in Application Fields

• Petrochemical Compressors: Deployed on 5 MW refrigeration compressors in ethylene plants, the ABB REM545BG229AABA provides coordinated motor protection with thermal overload curves precisely matched to compressor load profiles, preventing nuisance tripping during high ambient temperature operation.
• Mining Conveyors: Installed on 2 MW overland conveyor drives, this relay’s locked rotor protection detects belt stall conditions within 2 seconds, with the ABB REM545BG229AABA‘s start current profiling preventing false trips during heavily loaded belt starting.
• Water/Wastewater: Utilized on raw water intake pumps in municipal water treatment, the ABB REM545BG229AABA monitors pump undercurrent conditions indicating loss of prime, automatically initiating pump shutdown and alarm to operations center.
• Power Plant Boiler Feed Pumps: Applied on 10 MW boiler feed pump motors in coal-fired stations, the ABB REM545BG229AABA provides RTD-based bearing temperature monitoring with predictive alarm before reaching trip threshold, enabling planned maintenance scheduling.
• Cement Raw Mills: Implemented on 4 MW ball mill motors, this relay’s frequent start protection limits restart attempts to six per hour per manufacturer specification, with the ABB REM545BG229AABA displaying remaining inhibit time on local HMI.

Comparison with Competing Products

The ABB REM545BG229AABA offers superior motor thermal modeling compared to Schneider Electric’s Sepam M87 through its negative sequence current compensation, which accurately detects rotor heating during voltage imbalance conditions. While GE Multilin 469 provides more RTD channels, the ABB REM545BG229AABA delivers more intuitive local HMI with plain language messaging versus code-based indication. Siemens 7SK80, while cost-effective, lacks harmonic measurement capability increasingly important for VFD-fed motor applications. The ABB REM545BG229AABA represents the optimal balance of comprehensive protection features, user interface, and lifecycle cost for medium voltage motor applications.

Selection Suggestions and Precautions

• Application Verification: Confirm that the ABB REM545BG229AABA configuration matches your specific motor application; the BG229AABA variant includes 4 current + 4 voltage inputs suitable for motors requiring undervoltage and overvoltage protection.
• CT Ratio Specification: Order the ABB REM545BG229AABA with appropriate CT input rating (1 A or 5 A) matching your protection CT secondary rating; incorrect CT selection will cause measurement errors and protection miscoordination.
• RTD Sensor Compatibility: The ABB REM545BG229AABA accepts Pt100 or Ni100 RTDs with 3-wire connection; verify existing motor RTDs are compatible and maintain shielded twisted pair wiring from motor terminal box to relay.
• Setting File Backup: Before commissioning, upload complete ABB REM545BG229AABA configuration via CAP 505 software and maintain secure off-line backup; relay settings require motor-specific thermal parameters and protection curve coordination studies.
• Thermal Model Initialization: When commissioning the ABB REM545BG229AABA on an in-service motor, initialize thermal capacity model to match actual motor temperature; default 0% thermal capacity will result in inadequate protection until model stabilizes.
• Communication Protocol Selection: The ABB REM545BG229AABA supports Modbus RTU standard; Profibus DP requires optional communication module; verify protocol compatibility with your plant DCS or SCADA system before ordering.
• Start Profile Learning: Enable start current profiling during initial motor starts; the ABB REM545BG229AABA requires 5–10 successful starts to establish reliable locked rotor detection threshold based on actual driven load characteristics.
• Spare Parts Strategy: Given the ABB REM545BG229AABA‘s critical role in motor protection and ABB’s product lifecycle status, maintain configured spare relays for each motor protection application, stored in static-shielded packaging with quarterly battery verification.
• Environmental Installation: Mount the ABB REM545BG229AABA in switchgear front panel with adequate ventilation; avoid direct sunlight exposure in outdoor switchgear installations to prevent LCD display degradation.
• Password Management: Document all ABB REM545BG229AABA access passwords and store in secure engineering records; factory default passwords should be changed during commissioning to prevent unauthorized setting modification.
• Firmware Verification: Confirm ABB REM545BG229AABA firmware revision supports your specific protection requirements; revision 2.0 and above includes enhanced start inhibit algorithms for high-inertia loads.
• Maintenance Testing: Perform secondary injection testing of the ABB REM545BG229AABA at 5-year intervals, verifying accuracy of all protection elements, trip time characteristics, and input/output functionality per NETA MTS recommendations.
• Obsolescence Awareness: The REM545 series is designated as “Active” but ABB’s next-generation motor protection platform (REM630) offers IEC 61850 and enhanced cybersecurity; evaluate migration path for new installations while maintaining ABB REM545BG229AABA spares for existing fleet.
• Arc Flash Considerations: The ABB REM545BG229AABA does not include integrated arc flash detection; for applications requiring light-sensor based arc flash protection, consider ABB REM630 series or external arc flash relays with intertripping to REM545.

TRICONEX 2658
TRIC0NEX 3003
TRICONEX 3006
TRICONEX 3008
TRIC0NEX 3501E PLC
TRIC0NEX 3502E PLC