GE DS2020EXPSG3 Special Assembly Exciter Power Supply
Manufacturer: GE Fanuc
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Part Number: DS2020EXPSG3
Condition：New with Original Package
Product Type: Exciter Power Supply Module
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The DS2020EXPSG3 (functional acronym EXPS) is an authoritative exciter power supply module manufactured by GE Fanuc for the Mark V Speedtronic turbine control system. This special assembly is a mechanical necessity for providing regulated DC power to turbine excitation subsystems, ensuring stable magnetic field generation and precise synchronous control. Engineered for mission-critical reliability, the DS2020EXPSG3 incorporates high-performance hardware components, including metal oxide varistors (MOVs) for surge suppression and heavy-duty heat sinks for thermal stability. It is a core component in global power generation plants and refineries where turbine safety and synchronized grid operation are paramount.
Detailed Technical Specifications
| Attribute | Details |
| Manufacturer | GE Fanuc / General Electric |
| Model Number | DS2020EXPSG3 |
| Series | Mark V Speedtronic |
| Functional Acronym | EXPS |
| Assembly Type | DS2020 Special Assembly |
| Group Designation | Group 3 |
| Primary Function | Regulated Excitation Power Supply |
| Hardware Features | Terminal strips, inductors, MOVs, aluminum heat sinks |
| Protection | Overload, surge suppression, static-sensitive component protection |
| Operating Temp | -40 °C to +70 °C (Industrial grade) |
| Redundancy | Supported for high-availability turbine loops |
| Weight | 0.8–1.0 kg |
Engineering and Operational Guidelines
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Excitation Precision: The DS2020EXPSG3 delivers consistent DC voltage to the exciter field. This expertise ensures that the turbine-generator set maintains the required reactive power output and voltage stability during grid fluctuations.
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Thermal Management and Longevity: The module is equipped with integrated heat sinks to manage the thermal load generated by continuous power conversion. This design choice is a trustworthy engineering measure to prevent component fatigue in high-ambient-temperature industrial environments.
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Transient Voltage Protection: To safeguard sensitive control logic, the DS2020EXPSG3 utilizes metal oxide varistors (MOVs) and inductors. These components act as a mechanical necessity to filter out electrical noise and clamp high-voltage surges that could otherwise damage the Mark V backplane.
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System Integration: As a Group 3 special assembly, this module is specifically tuned for the electrical requirements of Mark V excitation racks. It utilizes standard terminal strips for secure field wiring and reliable electrical contact under high-vibration conditions.
Technical FAQ
Q: What is the significance of the "Group 3" designation for this model?
A: Group designations in the DS2020 series specify the component population and voltage ratings. The DS2020EXPSG3 is specifically configured for Group 3 excitation requirements, and it is a professional best practice to ensure the Group number matches your existing rack configuration before replacement.
Q: Does this module require special handling during installation?
A: Yes. The DS2020EXPSG3 contains static-sensitive components. Technicians must use grounded wrist straps and ESD-safe packaging to prevent latent damage to the integrated circuits during handling or mounting.
Q: Can this power supply be used in redundant configurations?
A: Absolutely. The Mark V architecture allows for redundant exciter power supply paths. The DS2020EXPSG3 is designed to work in parallel configurations to provide bumpless power transfer if a primary supply failure occurs.