The GE IS200EDEXG1B is an Exciter De-Excitation Control Board for the GE Speedtronic EX2100e gas turbine control system. It is a critical component of the system, responsible for safely and efficiently shutting down the turbine in the event of an emergency.

The IS200EDEXG1B is a printed circuit board that contains a number of electronic components, including:

·A SCR (silicon controlled rectifier) firing circuit, which is used to control the firing of the SCRs in the de-excitation bridge.
·A conduction sense feedback circuit, which is used to monitor the current flowing through the de-excitation bridge.
·A voltage retention circuit, which is used to maintain the voltage on the generator field during the de-excitation process.

The IS200EDEXG1B is a reliable and robust board that is designed to withstand the harsh conditions of the gas turbine environment. However, it is important to note that it is a static-sensitive device and should be handled with care.

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