GE DS200EXDEG1A EX2000 De-Excitation Control Board

DS200EXDEG1A belongs to the EXDE family used to control SCR firing in the generator-field discharge circuit. GE describes this function for normal and emergency shutdown, including field-voltage and contactor-energy limitation during opening.

DS200EXDEG1A belongs to the EXDE family described with two independent firing-control circuits. The circuits use separate control supplies and separate conduction sensors, so the two firing paths are more than two duplicated inputs sharing one sensing path.

DS200EXDEG1A belongs to the EXDE family that can fire its SCR from either control input or a selected anode-to-cathode overvoltage path. GE describes a P24 V command at shutdown; no exact breakover setting is inferred for G1A.

DS200EXDEG1A uses the EXDE family designation documented with stored capacitor energy for firing support. If a firing command coincides with input-power removal, GE states that the gate pulse can be maintained for at least one second.

DS200EXDEG1A belongs to the EXDE family requiring one board for each controlled SCR. GE describes configured master/follower modules relaying firing commands so parallel SCRs fire synchronously; the required board count follows the actual SCR arrangement.

DS200EXDEG1A belongs to the EXDE family using a separate conduction-sensor board connected through JCX and JCY. GE identifies these as 10-pin ribbon connections; the sensed conduction is used to verify operation of the discharge circuit.