Overview

The GE IS200EHPAG1BAA is a gate pulse amplifier board designed for GE’s EX2100 and EX2100e excitation control systems. Its main function is to receive fiber-optic gate commands from the ESEL logic board and amplify them into high-voltage pulses that trigger six silicon-controlled rectifiers (SCRs). These SCRs are used to regulate the generator field current, maintaining stable voltage output and enabling safe operation under varying load conditions.

In addition to its core amplification function, the EHPAG1BAA board is equipped with several monitoring and protection features, including:

• Conduction feedback,

• Airflow and temperature sensing,

• Onboard diagnostics.

These features help improve the system reliability, preventing misfires, overheating, and electrical faults. The board’s compact, rack-mounted design allows it to integrate easily into excitation cabinets. It is suitable for both new installations and retrofit projects.

This module is commonly used in steam, gas, and hydroelectric power plants, where precise SCR control is crucial for generator performance and protection.

Technical Data

Typical Applications

• Generator Excitation Systems: Controls SCR firing and ensures precise field current regulation.

• Power Bridge Interface: Interfaces between the controller and the SCRs in EX2100 and EX2100e excitation cabinets.

• Fault Monitoring & Thermal Protection: Monitors system health to prevent overheating and electrical faults.

• Industrial Generator Control: Used in petrochemical, mining, and manufacturing sectors for power generation and system protection.

• System Upgrades & Retrofits: Compatible with legacy GE excitation systems, enabling modernizations and expansions.

Example: During generator startup, the EHPAG1BAA board ensures synchronized SCR firing, allowing for stable excitation. Its diagnostic features help operators quickly detect faults, improving system safety and minimizing downtime.

FAQ

Q1: What does the IS200EHPAG1BAA board do?
A1: It amplifies fiber-optic gate signals to trigger six SCRs in excitation systems.

Q2: Is it compatible with EX2100e systems?
A2: Yes, it works with both EX2100 and EX2100e platforms.

Q3: What kind of input does it receive?
A3: It receives fiber-optic gate commands from the ESEL logic board.

Q4: What protection features are included?
A4: It monitors conduction feedback, airflow, and temperature, and includes LED status indicators for diagnostics.

Q5: What industries use this module?
A5: Industries include power generation, oil & gas, mining, and heavy industrial automation.