GE IS200EDEXG1AFA Exciter De-Excitation Board

Overview

The GE IS200EDEXG1AFA is an Exciter De-Excitation Board designed for GE EX2100 Excitation Control Systems. It manages energy dissipation during generator shutdown to ensure safe, efficient operation. The board stores and dissipates excess generator energy, provides conduction sensing feedback, retains voltage during power failures, and initiates SCR de-excitation firing. Typically, the EXTB board controls it, but the board can act independently if control fails.

Technical Specifications

• Type: Exciter De-Excitation Board

• Application: GE EX2100 Excitation Control Systems

• Primary Functions:

• Energy storage and dissipation on shutdown

• Conduction sensing feedback

• Voltage retention during power failures

• SCR de-excitation firing initiation

• Control: Normally controlled by EXTB board; can independently initiate de-excitation

• Power Supply: Converts 125VDC to 24VDC via EPSM module

• Board Variants:

• Group 1: SCR de-excitation

• Group 2: Diode de-excitation

• Connectors: Configurable jumpers (JP1–JP6), bayonet connectors

• Protection: Multiple circuit protection elements

• Dimensions: 30 × 25 × 4 cm

• Weight: 1.5 kg