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The GE DS2020FEANRP100A Field Exciter Module is a 100 Amp power supply unit designed for precise control of motor and generator excitation in GE industrial drive and turbine control systems.
⚡ Function and Application
This module is a critical component in the excitation control system for rotating electrical machinery. Its primary function is to:
- Regulate Field Excitation: It manages and controls the DC current supplied to the field winding of a synchronous motor or generator, which in turn controls the machine’s magnetic field strength.1
- Voltage and Power Control: By precisely controlling the excitation current, the module ensures stable and accurate output voltage and reactive power (VAr) regulation for generators, or maintains synchronism in large synchronous motors.
- Application: It is part of the GE Mark V Drive Control System series and is widely used in the control systems for gas and steam turbine automated drive assemblies.2
⚙️ Technical Specifications (100 Amp Model)
The “100A” in the part number, DS2020FEANRP100A, is the key differentiator, indicating its high current rating.
| Feature | Specification / Description |
| Product Series | GE DS2020 (Modular assembly within the Mark V Series) |
| Functional Name | Field Exciter Module / Power Supply |
| Current Rating | $\mathbf{100 \text{ Amps DC}}$ (Maximum Excitation Current) |
| Input Power | Single-phase, 600 V AC at 50/60 Hz |
| DC Output | Typically 500 V DC at 50 Amps (Note: The 100A refers to the module’s overall max rating/capability) |
| Field Supply Style | Supports NRP (Plugging) and NRX (Non-Plugging) styles of non-reversing field supplies. |
| Components | Contains voltage-limiting components such as electrolytic capacitors (rated at $\mathbf{660 \text{ V AC}}$) and various resistors and diodes. |
The modular design uses a sturdy metallic chassis for secure installation and is engineered to meet the demands of industrial environments requiring high power and precise control.3
You may find this video on the principles of field excitation helpful: lesson 11: Generator Excitation System. This video provides a good fundamental explanation of how DC excitation current is controlled to adjust the magnetic field in a generator, which is the exact function of the DS2020FEANRP100A module.
