The GPU2000R REG544 (1SABB084621R0001) is a high-performance, multifunction generator protection relay designed to safeguard synchronous generators across industrial, utility, and renewable energy sectors. As part of ABB’s proven GPU2000R series, this unit utilizes a triple-processor architecture to ensure high-speed fault detection and mitigation. It serves as a comprehensive solution for primary or backup protection, monitoring critical parameters such as voltage, frequency, phase angle, and excitation to prevent damage from electrical faults and abnormal operating conditions.
The GPU2000R REG544 (1SABB084621R0001) combines robust hardware with advanced logic processing for demanding power environments.
Manufacturer: ABB (Origin: Switzerland)
Model Designation: GPU2000R REG544
Part Number: 1SABB084621R0001
Device Type: Multifunction Generator Protection Relay
Processor Architecture: Triple-processor system for simultaneous protection and control
Voltage Input Range: 10V – 150V AC/DC
Frequency Range: 45Hz – 65Hz (Supports 50Hz/60Hz systems)
Protection Functions: Overvoltage (59), Undervoltage (27), Overfrequency (81O), Underfrequency (81U), Reverse Power (32R), Loss of Excitation (40), Overcurrent (50/51), Breaker Failure (50BF)
Logic I/O: 8 Programmable logic inputs and 6 Configurable outputs
Monitoring: Real-time tracking of excitation, phase angle, and power flow
Timers: Integrated real-time machine running timers and alarm logging
Communication: Supports IEC 61850, Modbus TCP/RTU, DNP3, and Ethernet
Memory: Flash memory for field-executable software updates
Operating Temperature: -40°C to +70°C (Extended industrial range)
Dimensions: 200 × 200 × 100 mm
Weight: 1 kg (Net unit weight); Gross shipping weight may vary
Triple-Processor Reliability: The GPU2000R REG544 (1SABB084621R0001) isolates protection logic from communication tasks, ensuring that fault detection remains uninterrupted even during heavy network traffic.
Deterministic Fault Response: High-speed processing enables sub-cycle fault identification, critical for maintaining grid stability and preventing catastrophic generator winding damage.
Flexible Logic Configuration: Programmable I/O allows for customized interlocking and tripping schemes, making it adaptable to complex substation or power plant architectures.
Advanced Asset Management: Built-in machine running timers allow maintenance teams to track actual operational hours, optimizing service intervals for the generator set.
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