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The IS200EHPAG1AAA is an Exciter Gate Pulse Amplifier Board developed by GE. It is a part of the EX2100 control system.
The Gate Pulse Amplifier Board (EHPA) is responsible for receiving gate commands from the ESEL and controlling the gate firing of up to six SCRs on the Power Bridge.
Additionally, it serves as the interface for current conduction feedback, as well as monitoring bridge airflow and temperature.
Power Supply: Powered by a nominal 125 V dc power source supplied from the EPDM.
An onboard dc/dc converter ensures consistent power supply for SCR gating operations across the full range of input supply voltage.
LED Indicators: LEDs are incorporated into the design to provide visual indication of various system parameters.
These indicators illuminate to denote the status of the EHPA power supply, input gate commands from ESEL, EHPA outputs to the SCRs, currents into the bridge, line filter, cooling fan rotation, bridgetemperature, as well as alarms or fault conditions.
Gate Control and SCR Firing: Receives gate commands from the ESEL and effectively controls the gate firing of up to six SCRs situated on the Power Bridge.
This functionality ensures precise control over the excitation process, optimizing performance and stability.
The board's multifaceted functionality and comprehensive I/O capabilities make it an indispensable component of the 100 mm EX2100 Excitation Control system.
By facilitating precise gate control, providing critical feedback on bridge operation, and enabling real-time monitoring of environmental factors, the EHPA plays a pivotal role in ensuring the reliability, efficiency, and safety of the excitation process.
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