Description
Product Description
GE D20 EME 2400-21004 is a core excitation management module under GE’s D20 series, specifically designed for synchronous generator excitation control systems. It acts as the “brain” of the excitation system, regulating generator excitation current to maintain stable terminal voltage, optimize power factor, and provide rapid fault protection. GE D20 EME 2400-21004 supports analog-digital hybrid control, making it compatible with both new generator installations and legacy system retrofits. It integrates multiple control modes (constant voltage, constant power factor, constant reactive power) and protection functions, while supporting industrial communication protocols such as Modbus TCP/IP, IEC 61850, and DNP3 for seamless DCS/SCADA integration. With an operating temperature range of -20°C to +60°C and optional IP54/IP65 protection rating, GE D20 EME 2400-21004 delivers reliable performance in power plants, substations, petrochemical facilities, and distributed energy systems, supporting critical processes like generator startup, load regulation, and grid stability maintenance.
Product Parameters
- Module Type: Excitation management module (GE D20 series, generator excitation dedicated)
- Core Function: Generator voltage regulation, excitation current control, power factor optimization, fault protection, remote monitoring
- Electrical Specifications: 24VDC (or 110V/220V AC) auxiliary power; 100V AC PT secondary input; 5A AC CT secondary input; typical power consumption ≤100W
- Control Precision: Voltage regulation static error ≤±0.25% rated voltage; dynamic response time ≤50ms; ±0.5% voltage stability
- Protection Functions: Overexcitation limit (OEL), underexcitation limit (UEL), V/Hz limit, rotor overload protection (I²t integration), overvoltage/undervoltage protection
- Communication: Ethernet (RJ45), RS-232/RS-485 interfaces; supports Modbus TCP/IP, IEC 61850, DNP3, Modbus RTU
- Mechanical & Environmental: 120mm×80mm×30mm dimensions; ~0.5kg weight; DIN rail/cabinet mounting; -20°C to +60°C operating temperature; IP20/IP54/IP65 protection (model-dependent)
- Key Features: PWM trigger pulse output, 16-bit A/D converter, redundant power option, ToolboxST software compatibility, fault recording, PSS function support (with optional module)
Advantages and Features
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Precise Excitation Control
GE D20 EME 2400-21004 uses advanced PID algorithms to quickly adjust excitation current, maintaining stable voltage even during sudden load changes or grid fluctuations.
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Comprehensive Protection Mechanisms
Multiple built-in protection functions prevent rotor overheating, generator loss of synchronization, and iron core saturation, safeguarding critical generator components with GE D20 EME 2400-21004.
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Flexible System Integration
Multi-protocol support and diverse communication interfaces enable GE D20 EME 2400-21004 to seamlessly connect with DCS, SCADA, and HMI systems, facilitating centralized control and remote monitoring.
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Cost-Effective & Versatile
The module can replace traditional “PLC + communication module” combinations in small-to-medium systems, reducing overall system costs by up to 40% while supporting multiple application scenarios.
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Reliable & Easy to Maintain
Modular design simplifies installation and replacement, while fault recording and ToolboxST software compatibility streamline troubleshooting of GE D20 EME 2400-21004.
Application Cases in Application Fields
- Thermal/Hydro Power Plants: GE D20 EME 2400-21004 controls excitation for steam/water turbine generators, maintaining stable voltage and optimizing reactive power output to meet grid requirements.
- Distributed Energy Systems: In gas-steam combined cycle units, it provides fast response excitation control, adapting to fluctuating renewable energy inputs and ensuring grid compatibility.
- Substation Automation: The module monitors and controls substation equipment, enabling remote data acquisition and automated control for efficient grid management.
- Water Treatment Facilities: It controls on-site generator excitation and directly manages dosing pumps and aeration equipment, reducing system complexity and operational costs.
Comparisons with Competing Products
| Parameter | GE D20 EME 2400-21004 | Siemens 6RA80 | ABB UNITROL 6800 |
|---|---|---|---|
| Core Type | Excitation Management Module | DC Drive/Excitation Controller | Excitation System Controller |
| Control Precision | ≤±0.25% (voltage static error) | ≤±0.5% (voltage static error) | ≤±0.2% (voltage static error) |
| Protection Functions | OEL/UEL/V/Hz/rotor overload | Basic overcurrent/overtemperature | Full excitation protection suite |
| Communication Protocols | Modbus TCP/IP, IEC 61850, DNP3 | PROFINET, Modbus | IEC 61850, Modbus, PROFIBUS |
| Cost-Effectiveness | High (replaces multi-module combinations) | Medium | Low (targets large-scale systems) |
| Target Use | Medium generators, distributed energy, retrofits | Small generators, DC motors | Large power plant generators |
Selection Suggestions and Precautions
Selection Suggestions
- Choose GE D20 EME 2400-21004 for synchronous generator excitation control projects, especially retrofits of legacy systems or distributed energy applications requiring precise control and cost efficiency.
- Select it for power plants, substations, or industrial facilities needing reliable excitation control with seamless DCS integration and comprehensive protection.
Precautions
- Ensure the auxiliary power supply matches the module’s specifications (24VDC or 110V/220V AC) to avoid damage to GE D20 EME 2400-21004.
- Use ToolboxST software for parameter configuration and fault diagnosis to leverage the module’s full functionality.
- Follow proper wiring guidelines for PT/CT signals and communication lines, ensuring shielding and grounding to prevent interference.
- Regularly back up configuration files and calibrate the A/D converter every 2 years to maintain control precision.
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