Overview

The IS200EHPAG1DCB is a high-voltage gate pulse amplifier board designed for GE’s EX2100 excitation control systems. Its primary function is to receive gate commands from the ESEL logic board and amplify them into high-voltage pulses that trigger up to six silicon-controlled rectifiers (SCRs). These SCRs regulate the generator field current, ensuring stable voltage output and safe operation under varying load conditions.

Moreover, the EHPAG1DCB includes enhanced thermal handling and fault detection compared to earlier EHPA models. It monitors airflow and temperature, helping prevent overheating and misfiring. In addition to its core amplification role, the board contributes to system diagnostics and protection, making it essential for high-power industrial environments.

Therefore, this module is widely used in steam, gas, and hydroelectric power plants where precise SCR control and excitation reliability are critical.

Technical Data

Typical Applications

• Generator Excitation Systems: Controls SCR firing for field current regulation.

• Power Bridge Interface: Acts as a gate driver between controller and SCRs.

• Thermal Protection Systems: Monitors airflow and temperature to prevent overheating.

• Industrial Generator Control: Used in petrochemical, mining, and manufacturing sectors.

• System Retrofits: Compatible with legacy EX2100 installations for modernization.

Example: During generator startup, the EHPAG1DCB ensures synchronized SCR firing to establish stable excitation. Its thermal and airflow monitoring helps protect the system from thermal stress and electrical anomalies.

FAQ

Q1: What does the IS200EHPAG1DCB board do?
A1: It amplifies gate pulses to control six SCRs in excitation systems.

Q2: Is it compatible with EX2100 systems?
A2: Yes, it integrates seamlessly with GE’s EX2100 excitation platform.

Q3: What monitoring features are included?
A3: It monitors airflow and temperature to enhance thermal protection.

Q4: How is it mounted?
A4: It is rack-mounted inside the excitation cabinet.

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