Description
GE 12SBD11B2A
Technical Specifications
- Board Type: Excitation Regulator/Control
- System: GE Excitation Systems
- Output: PWM or analog firing signals for SCRs.
Functional Features
- Precise automatic voltage regulation (AVR).
- Reactive power (VAR) and power factor control.
- Under-excitation and over-excitation limiting.
Application Scenarios
Installed in generator excitation panels at utility and industrial power plants.
Performance Parameters
- Fast dynamic response to load changes.
- High-resolution voltage sensing and regulation.
Material Composition
High-reliability PCB with precision analog components and protective encapsulation.
Structural Characteristics
Rack-mountable or plug-in module with multi-pin connectors for field and power wiring.
Working Principle
Compares generator terminal voltage to a reference setpoint and adjusts the firing angle of the exciter’s silicon-controlled rectifiers (SCRs) to maintain stable output.
Installation Requirements
- Disconnect all exciter power before servicing.
- Calibrate using manufacturer-approved test equipment after installation.
Usage Precautions
- Never adjust calibration potentiometers without proper training.
- Ensure cooling fans are operational to prevent thermal damage.
