GE DS3800DFXA1B1C DFX Excitation Control Board 

Technical Specifications

Model: DS3800DFXA1B1C

Brand: GE (GE Vernova)

Product Type: DFX Excitation Control Board

Applicable System: Speedtronic Mark IV gas & steam turbine control system

Core Function: Excitation field current sampling, feedback signal conditioning, excitation loop regulation

Connector: Multi‑pin board‑to‑board edge connector, hardware configuration jumpers, test measurement points

Circuit Feature: Precision signal conversion, surge suppression, built‑in noise filtering network

Indicator: On‑board LED for operating status and fault alarm indication

Power Supply: Rack backplane 24VDC auxiliary power supply

Operating Temperature:‑30℃ ~ +65℃, non‑condensing

Humidity:5%‑95% non‑condensing

Protection Class:IP20, cabinet rack‑mount installation only

Weight:0.43kg

Dimension:240mm ×190mm ×30mm

Application: Power plant generator excitation cabinet, turbine control cabinet

Product Function Description

DS3800DFXA1B1C DFX excitation control board is a key feedback regulating component for Mark IV turbine excitation system. It samples generator excitation field current and field voltage signals, completes precision conversion and noise filtering, and sends processed feedback data to main controller for closed‑loop excitation adjustment.

On‑board configurable jumpers adjust signal gain parameters to match different exciter unit specifications. LED indicators give direct visual feedback for commissioning and fault locating. The hardware revision 1B1C optimizes sampling circuit stability, effectively restraining electrical interference from power‑plant site, providing reliable feedback basis for generator voltage regulation and over‑excitation protection logic.

Product Details

Rack‑mount multilayer PCB board plugs into Mark IV system cabinet slot directly. Conformal coated circuit board resists dust, moisture and heavy electromagnetic interference to satisfy long‑term continuous operation of power generating equipment. This original OEM product has been end‑of‑life, widely used for unit overhaul and spare‑part replacement. Electrostatic protection shall be adopted during installation, verify jumper gain setting and hardware revision to guarantee system matching.