ABB GPU2000R REG544 | 1SABB084621R0001 | Generator Protection Unit
Product Overview
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.
Technical Specifications
The GPU2000R REG544 (1SABB084621R0001) combines robust hardware with advanced logic processing for demanding power environments.
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Manufacturer: ABB (Origin: Switzerland)
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Model Designation: GPU2000R REG544
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Part Number: 1SABB084621R0001
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Device Type: Multifunction Generator Protection Relay
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Processor Architecture: Triple-processor system for simultaneous protection and control
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Voltage Input Range: 10V – 150V AC/DC
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Frequency Range: 45Hz – 65Hz (Supports 50Hz/60Hz systems)
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Protection Functions: Overvoltage (59), Undervoltage (27), Overfrequency (81O), Underfrequency (81U), Reverse Power (32R), Loss of Excitation (40), Overcurrent (50/51), Breaker Failure (50BF)
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Logic I/O: 8 Programmable logic inputs and 6 Configurable outputs
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Monitoring: Real-time tracking of excitation, phase angle, and power flow
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Timers: Integrated real-time machine running timers and alarm logging
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Communication: Supports IEC 61850, Modbus TCP/RTU, DNP3, and Ethernet
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Memory: Flash memory for field-executable software updates
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Operating Temperature: -40°C to +70°C (Extended industrial range)
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Dimensions: 200 × 200 × 100 mm
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Weight: 1 kg (Net unit weight); Gross shipping weight may vary
Functional Capabilities
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Triple-Processor Reliability: The GPU2000R REG544 (1SABB084621R0001) isolates protection logic from communication tasks, ensuring that fault detection remains uninterrupted even during heavy network traffic.
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Deterministic Fault Response: High-speed processing enables sub-cycle fault identification, critical for maintaining grid stability and preventing catastrophic generator winding damage.
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Flexible Logic Configuration: Programmable I/O allows for customized interlocking and tripping schemes, making it adaptable to complex substation or power plant architectures.
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Advanced Asset Management: Built-in machine running timers allow maintenance teams to track actual operational hours, optimizing service intervals for the generator set.
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Mark Thompson
Maintenance Manager, USAReliable Source for New Spares
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
Robert Hoffmann
Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
Lucas Müller
Operations Director, GermanyRelated Products
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