GE IS200EDEXG1A Exciter De-Excitation BoardDescription The IS200EDEXG1A module is engineered to store and dissipate energy provided to the generator, ensuring safe and efficient de excitation. It features conduction sensing feedback and voltage retention capabilities, allowing operation during power failures. The module is typically controlled by the EXTB board. Specifications Type: De Excitation Module. Power Input: 24 VDC (converted from 125 VDC by the EPSM module). Capacitors: 8 x 35V 1800F