Overview

The IS200EHPAG1DAB Gate Pulse Amplifier Board is a critical interface between the EX2100 controller and the power bridge in GE’s excitation systems. Its primary function is to amplify and distribute gate pulses to six Silicon Controlled Rectifiers (SCRs), enabling precise switching and control of generator field current.

Moreover, this board receives gate commands from the ESEL board and converts them into high-voltage pulses suitable for triggering SCRs. It also supports fault monitoring and thermal protection, ensuring system integrity under demanding operating conditions. In addition to its core function, the EHPAG1DAB contributes to excitation system diagnostics and fault isolation, making it essential for safe and efficient generator operation.

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

Technical Data

Typical Applications

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

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

• Fault Monitoring and Protection: Supports thermal protection and fault detection.

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

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

For example, during generator startup, the EHPAG1DAB board ensures synchronized SCR firing to establish stable field current. In addition, its fault monitoring features help prevent overheating and misfiring, protecting the excitation system from damage.

FAQ

Q1: What does the IS200EHPAG1DAB board do?
A1: It amplifies and distributes gate pulses to six SCRs for excitation control.

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

Q3: What voltage does it operate on?
A3: It uses a nominal 125 VDC input for gate pulse generation.

Q4: How does it connect to the controller?
A4: It receives gate commands from the ESEL board and interfaces with the power bridge.

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