Home / Products / Speedtronic / Speedtronic Mark IV

Speedtronic Mark IV Control System Parts

GE Speedtronic Mark IV Turbine Control System — DS3800 Series

237+
DS3800 Parts
Tested
& Certified
Global
Shipping

About Speedtronic Mark IV

The GE Speedtronic Mark IV is a legacy turbine control system widely used on Frame 5, Frame 6, and Frame 7 gas turbines. Introduced in the 1980s, it uses the DS3800 series of printed circuit boards for all control, protection, and monitoring functions. Despite being a legacy system, thousands of Mark IV units remain in service worldwide. BDB Turbine Parts maintains extensive inventory of DS3800 boards including processor cards, I/O boards, relay drivers, power supplies, and communication modules.

Specifications: Board series: DS3800 | Architecture: Triple Modular Redundant (TMR) | I/O: Analog & Digital | Communication: ARCNET

Applications: GE Frame 5, Frame 6B, Frame 7EA gas turbines, steam turbines, compressor drives

DS3800 Series Parts in Stock

DS3800CXCIA

Controller Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800CXCIA. Ava...

DS3800DCMC

Regulator Card

DS3800DCMC1C

Regulator Card

DS3800DEPB

Excitation Power Board

DS3800DEPB1A

Excitation Power Board

DS3800DFCA

Firing Circuit Auxiliary Card

DS3800DGRA

Auxiliary Card Regulator

DS3800DGRC

ignal Isolated Auxiliary Board

DS3800DGRC1C

Digital Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800DGRC1C. Avail...

DS3800DHVA

Digital Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800DHVA. Availab...

DS3800DLCB

Analog Daughter Board

DS3800DLIB

Module Card Inverter

DS3800DMEC

Digital Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800DMEC. Availab...

DS3800DMPG

Ethernet Bus Interface Board

DS3800DMPK

General Regulator Board

DS3800DMPK1C

General Regulator Board

DS3800DMPK1E

General Regulator Board

DS3800DOWA

Regulator Auxiliary Board

DS3800DOWA1A

Regulator Auxiliary Board

DS3800DRFA

Digital Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800DRFA. Availab...

DS3800DSAB

Servo Valve Module

DS3800DSAB1A

Digital Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800DSAB1A. Avail...

DS3800DSFC

CIRCUIT BOARD

DS3800DSWB

Digital Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800DSWB. Availab...

DS3800HAFA

CARD AUXILIARY FUNCT

DS3800HAIA

ANALOG CONVERSION BD

DS3800HAIC

ANALOG INPUT CARD

DS3800HAMC

Hardware Board for GE SpeedTronic Mark IV gas turbine control system. Part number DS3800HAMC. Availa...

DS3800HARA

EAROM CARD

DS3800HCMA

COMMUNICATIONS CONTROL BOARD

View All DS3800 Parts

Other Speedtronic Generations

Speedtronic Mark V (DS200) Speedtronic Mark VI (IS200/IS215) Speedtronic Mark VIe (IS220/IS230) All Speedtronic Parts

Frequently Asked Questions - Speedtronic Mark IV

What DS3800 boards are most commonly needed?
The most requested Mark IV boards include DS3800HMPK (processor), DS3800NPPC (power supply), DS3800DEPB (excitation), DS3800HAIA (analog input), and DS3800DMPC (digital output) cards.
Are Mark IV DS3800 boards still available?
Yes, BDB Turbine Parts maintains stock of DS3800 boards through our global network. Many boards are available from stock or with short lead times.
Can Mark IV be upgraded to Mark VI or Mark VIe?
Yes, GE offers migration paths from Mark IV to Mark VIe. However, many operators choose to maintain their Mark IV systems due to the significant cost of migration. We support both strategies.
Do you offer repair services for DS3800 boards?
We can connect you with certified repair facilities that specialize in DS3800 board repair and testing. Many boards can be economically repaired rather than replaced.
How do I identify which DS3800 board I need?
Each DS3800 board has a unique suffix identifying its function (e.g., HMPK = processor, NPPC = power supply). Contact us with your board designation or turbine application and we will identify the correct part.

Need DS3800 Boards?

Contact our team for pricing and availability on all Speedtronic Mark IV components.

Request Quote Browse DS3800 Parts