GE IS200EDEXG1AEA Exciter De-Excitation ModuleDescription The GE IS200EDEXG1AFA is a De Excitation Module used in the EX2100 Excitation Control System. It plays a critical role in safely dissipating residual energy from a generator during shutdown. This board is designed to provide conduction sensing feedback, voltage retention during power failure, and controlled SCR de excitation firing. Specifications Model: IS200EDEXG1AFA Series: EX2100 Excitation Control Function: Bridge and protection board