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The GE DS2020FEANRP075A Field Exciter Module is a 75 Amp capacity power electronic component essential for controlling rotating electrical machinery within GE drive and turbine control systems.1
💡 Function and Application
The module’s primary purpose is to precisely manage and regulate the excitation current supplied to the field winding of a synchronous motor or generator.2 This direct control is crucial for maintaining system stability and performance.
- Excitation Control: It serves as a power conversion and regulation stage in the excitation system (often within the GE Mark V Drive Control Series or similar drive panels).
- Voltage and Power Regulation: By controlling the DC current supplied to the machine’s field, the module directly influences the magnetic field strength, thereby regulating the output voltage and reactive power (VAr) of a generator or maintaining synchronization in a synchronous motor.
- Capacity: The “075A” in the part number specifies its maximum current rating, meaning the module can supply up to 75 Amps of current to the motor field.3 This places it in the high-amperage range for field exciter modules in this series (which typically range from 50A to 100A).4
⚙️ Technical Details and Features
The DS2020FEANRP075A is a highly specialized, modular assembly:5
| Feature | Specification / Description |
| Product Series | GE DS2020 (Modular assembly within the Mark V Drive Control System) |
| Functional Name | Field Exciter Module |
| Current Rating | $\mathbf{75 \text{ Amps DC}}$ (Maximum Output) |
| Input Power | Typically Single-Phase, 600 V AC at 50/60 Hz |
| Output Voltage | Typical DC output is up to 500 V DC |
| Field Supply Style | Supports NRP (Plugging) style field supplies, which are non-reversing. It can also function with NRX (Non-Plugging) field supplies. |
| Physical Design | Features a sturdy semi-open metallic chassis with mounting holes and includes an integrated cooling fan for thermal management. |
| Protection | Incorporates built-in protection features like overvoltage, undervoltage, and overcurrent protection to ensure component longevity. |
The DS2020 designation implies that the unit is a specialized hardware assembly, often consisting of multiple printed circuit boards (PCBs) and power components (like Thyristors or SCRs) bolted together on a metal backplane.6
For more information on the core principles of the equipment that this module controls, here’s a video on Generator Excitation System. This video explains the basic operation and control of DC excitation current in generators, which is the system the GE DS2020FEANRP075A module is designed to power and regulate.
