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The GE DS2020FEANRX050A Field Exciter Module is a high-current power electronic assembly used in GE Mark V Turbine and Drive Control Systems.1 Its primary role is to provide precise regulation of the excitation current for rotating electrical machinery.2
⚙️ Key Specifications and Function
The part number breaks down the module’s function and specifications:
- DS2020: Identifies the modular series it belongs to within the GE Mark V platform.3
- FEAN: Stands for Field Exciter Assembly Non-reversing.
- RX050A:
- 050A indicates the module’s maximum Direct Current (DC) output rating of 4$\mathbf{50 \text{ Amps}}$.5
- NRX (often inferred from the part number) signifies compatibility with Non-Reversing / Non-Plugging field supplies.6
| Specification | Value |
| Product Series | GE Mark V Control System (often associated with gas/steam turbines and drives) |
| Functional Role | Field Exciter Module |
| Input Power | $600\text{V}$, $1\text{-Phase}$, $50/60\text{ Hz}$ |
| DC Output Current | $\mathbf{50 \text{ Amps}}$ (Maximum) |
| DC Output Voltage | $500\text{ VDC}$ |
| Field Supply Type | NRX (Non-Reversing, Non-Plugging) |
🎯 Application and Purpose
The Field Exciter Module is a critical component for controlling large synchronous motors and generators:
- Excitation Control: It controls the $\text{DC}$ current supplied to the field windings of the motor or generator. This field current is directly responsible for generating the magnetic field necessary for the machine’s operation.7
- Voltage and Stability: By precisely regulating the field current, the module helps to maintain the output voltage and stability (synchronism) of the generator or motor drive system.8
- Physical Design: The module is typically housed in a robust, rectangular metallic chassis and often includes a built-in cooling fan for thermal management, which is essential for high-current power electronics.9
