Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.50 (2)
  • Click a star to rate this product
    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.50 (2)
  • Click a star to rate this product
The IS200EDEXG2A is an Exciter De-excitation Board produced by General Electric as part of their EX2100e series. This model uses SCR firing for conduction paths. IS200EDEXG2A is also equipped with dual independent firing control circuits.



3 Year Warranty: Learn More
Sell Surplus: Have a IS200EDEXG2A to sell? Sell Now
Exchange Credit: Learn more about our exchange credit program
  • Part Number: IS200EDEXG2A
  • Manufacturer: GE Industrial Systems
  • Series: EX2100e Excitation Control

IS200EDEXG2A Technical Specifications

Board Type Bridge/Protection Board
Functional Acronym/Abbreviation EDEX
Model Type Exciter De-excitation
Part-Specific Manual GEI-100466
Power Supply Rating 28 VDC
Series EX2100e
Series Manual GEH-6781L EX2100e Excitation Control
Standard De-excitation Provided 33, 53, or 77 Thyristor

Product Description

The IS200EDEXG2A model is part of the EX2100e series produced by General Electric. This model is the primary Exciter De-excitation board. During operation, the primary function of this model is to fire SCR functions, which will then allow the conduction paths to go through the field discharge inductor, allowing the field energy to be dissipated. If this model is being used in larger excitation systems it is highly recommended that EDEX models are paralleled. This model is also equipped with dual independent firing control circuits. 

The IS200EDEXG2A board is not only used as the main board in the de-excitation module, but it is also one of the primary boards in the crowbar module. The EDEX board is connected to the EAUX board and is controlled by this board for de-excitation, but the EDEX board can self-initiate de-excitation if the EAUX board fails. The EDEX board can also sense magnetic fields produced by the field discharge currents that are flowing through the thyristor through the mounted Hall effect conduction sensors featured on this board. 

The IS200EDEXG2A board has two firing control circuits which are powered by different power supplies that also use separate conduction sensors indicating that they are mutually independent. While the EDEX board has a part-specific manual that is the GEI-100466 as it is difficult to find at this time the best manual to use is the GEH-6781L EX2100e Excitation Control User’s Guide. 

If you would like to look into purchasing the IS200EDEXG2A board, please contact us during our Monday through Friday business hours by phone or email for a pricing quote. 

Reviews For IS200EDEXG2A

Internal Review

The IS200EDEXG2A board is used for a multitude of functions which includes voltage retention, de-excitation SCR firing, and conduction sensing feedback for the de-excitation module. For more information refer to the above manuals. - AX Control Tech Team

Repair Services For IS200EDEXG2A

Type Lead Time Price Action
Repair Service 1-2 weeks $1865

Our highly skilled technicians can repair your IS200EDEXG2A. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More