GE IS200EDEXG1AFA Exciter De-Excitation board

IS200EDEXG1AFA is an Exciter De-Excitation Board manufactured by General Electric as a part of the EX2100 series used in Excitation control systems.IS200EDEXG1AFA serves as the primary PCB in an EX2100 De-Excitation Module, allowing conduction sensing feedback, voltage retention during power outages, and de-excitation firing.The EPSM module, which converts 125VDC to 24VDC, provides power to the board.In the de-excitation module, the EDEX board is the main board.To assure operation in the event of a power outage, EDEX provides de-excitation SCR firing, conduction sense feedback, and voltage retention.On the EXTB board, EMlO initiates de-excitation.The EXTB board opens the 41 DC contractor (41A/41B) or breaker, then passes the excitation signals from the auxiliary contacts to the EDEX's SCRfiring circuits.EDEX is divided into two categories.The Group 1 board is for SCR de-excitation, while the Group 2 board is for diode de-excitation.EDEX is usually controlled by EXTB but can initiate de-excitation if control fails.

Part Number: IS200EDEXG1AFA 
Manufacturer: General Electric
Series: EX2100
Product Type: Exciter De-Excitation board
Weight: 0.25 kg
Origin of Product: United States
Dimensions (LxWxH): 22.8 x 15.2 x 3.5 cm
Function: Primary PCB for EX2100 De-Excitation Module
Power Supply: EPSM module converts 125 VDC to 24 VDC
De-Excitation Control: SCR firing, conduction sense feedback, voltage retention
Controlled By: EXTB board (can initiate de-excitation if control fails)
SCR/Diode Category: Group 1: SCR de-excitation, Group 2: Diode de-excitation
Excitation Application: Synchronous generator voltage and reactive power control
DC Usage: Provides static magnetic field to rotor field windings

What is GE EX2100 IS200EDEXG1AFA 
The IS200EDEXG1AFA is a Exciter De-Excitation board that is part of the EX2100 series of Excitation Control Systems.

What is Excitation in Control Systems?
It is a component of the synchronous generator that performs control and protection functions such as voltage and reactive power control.

Why is DC utilized as a Source of Excitation?
To create a static magnetic field, an excitation voltage or current is applied to the field windings of a rotor.

ICS TRIPLEX

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