The IS200EACFG1B is an AC Feedback and Exciter Interface Board (ACFE) manufactured by General Electric (GE) as a vital part of the EX2100 Excitation Control System. This board is tasked with monitoring and processing analog AC signals from the generator – specifically voltage and current – and delivering this data to the control system for accurate voltage regulation and real-time system protection.

Operating as a signal interface, the IS200EACFG1B senses AC signals directly from the generator or auxiliary transformers. It filters, isolates, and scales these signals using precision analog circuitry, enabling the control system to analyze critical feedback values. The processed signals are used by the exciter controller to maintain proper generator output voltage, support synchronization, and manage dynamic loading conditions during operation.

The IS200EACFG1B plays an essential role in ensuring system stability, minimizing voltage transients, and supporting automatic voltage regulation (AVR). It also works in conjunction with protective relay logic, offering overvoltage, undervoltage, and loss-of-phase detection capabilities.

Engineered to meet GE’s reliability standards, this board is robust, industrial-grade, and intended for harsh power plant environments. Its modular design allows easy integration with other EX2100 components, enabling fast replacement or upgrades during maintenance cycles.

Typical applications include gas and steam turbine generators, especially where the GE EX2100 is deployed for excitation control. The board is field-proven and widely trusted across utility-scale generation and critical infrastructure applications.

⭐ Key Features:

• Designed for use in GE EX2100 Excitation Systems

• AC input signal monitoring for voltage and current feedback

• Provides essential data for voltage regulation and protective relaying

• High precision signal processing circuitry

• Interfaces with the control system via fiber or electrical connection

• Compact and rugged PCB for industrial environments

• Supports fault monitoring and diagnostics

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