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It looks like you repeated the last part of your previous request. I can provide the detailed information on the GE IS200EBACG2A Bridge AC Feedback Board (EBAC) again, which is used in the GE EX2100 Excitation Control System.
⚡ GE IS200EBACG2A Bridge AC Feedback Board
The IS200EBACG2A Bridge AC Feedback Board (EBAC) is a critical Printed Circuit Board (PCB) in the GE EX2100 Excitation Control System.1 Its primary function is to measure and condition the high-voltage AC feedback signals specifically from the Thyristor (SCR) Exciter Bridge.
This feedback is crucial for synchronizing the firing of the SCRs, which in turn regulates the DC field current supplied to the generator.
⚙️ Key Technical Specifications (G2 Version)
The G2 designation in the part number (IS200EBACG2A) indicates that this board is designed for higher-voltage excitation systems.
| Feature | Details |
| System | GE EX2100 Excitation Control System (often used with EX2100e) |
| Function | Exciter Bridge AC Voltage Feedback |
| Input Voltage Rating (G2) | Nominal AC input voltage up to 1000 V rms (+20%) at 50/60 Hz. |
| Inputs | Accepts three-phase AC voltage feedback from the exciter bridge input. |
| Transformers | Contains onboard transformers to safely scale down the high AC voltage to a low, measurable level. |
| Control Purpose | Provides the zero-crossing reference signals of the AC line voltage. |
| Processor Interface | Outputs measured data via DB9 connectors to the main controllers (M1, M2, and C) through the backplane. |
💡 Importance in Excitation Control
The EBAC board plays a fundamental role in the system’s stability and control:
- SCR Firing Control: The main Digital Signal Processor (DSP) board uses the zero-crossing reference signals from the EBAC to calculate the precise firing angle (or delay) for the SCRs. This accurate timing is how the system controls the output DC field current.
- Safety and Isolation: The onboard transformers provide electrical isolation between the high-voltage power components of the bridge and the sensitive, low-voltage control electronics, ensuring safety and protecting the controller.
- Voltage Range: The G2 version is necessary for installations where the exciter bridge operates directly from a higher voltage source (up to 1000 Vrms), distinguishing it from the G1 version (typically up to 480 Vrms).
The accurate and immediate feedback from the EBAC board is essential for stable Automatic Voltage Regulation (AVR) and quick response to changes in generator load and grid conditions.
It looks like you repeated the last part of your previous request. I can provide the detailed information on the GE IS200EBACG2A Bridge AC Feedback Board (EBAC) again, which is used in the GE EX2100 Excitation Control System.
⚡ GE IS200EBACG2A Bridge AC Feedback Board
The IS200EBACG2A Bridge AC Feedback Board (EBAC) is a critical Printed Circuit Board (PCB) in the GE EX2100 Excitation Control System.1 Its primary function is to measure and condition the high-voltage AC feedback signals specifically from the Thyristor (SCR) Exciter Bridge.
This feedback is crucial for synchronizing the firing of the SCRs, which in turn regulates the DC field current supplied to the generator.
⚙️ Key Technical Specifications (G2 Version)
The G2 designation in the part number (IS200EBACG2A) indicates that this board is designed for higher-voltage excitation systems.
| Feature | Details |
| System | GE EX2100 Excitation Control System (often used with EX2100e) |
| Function | Exciter Bridge AC Voltage Feedback |
| Input Voltage Rating (G2) | Nominal AC input voltage up to 1000 V rms (+20%) at 50/60 Hz. |
| Inputs | Accepts three-phase AC voltage feedback from the exciter bridge input. |
| Transformers | Contains onboard transformers to safely scale down the high AC voltage to a low, measurable level. |
| Control Purpose | Provides the zero-crossing reference signals of the AC line voltage. |
| Processor Interface | Outputs measured data via DB9 connectors to the main controllers (M1, M2, and C) through the backplane. |
💡 Importance in Excitation Control
The EBAC board plays a fundamental role in the system’s stability and control:
- SCR Firing Control: The main Digital Signal Processor (DSP) board uses the zero-crossing reference signals from the EBAC to calculate the precise firing angle (or delay) for the SCRs. This accurate timing is how the system controls the output DC field current.
- Safety and Isolation: The onboard transformers provide electrical isolation between the high-voltage power components of the bridge and the sensitive, low-voltage control electronics, ensuring safety and protecting the controller.
- Voltage Range: The G2 version is necessary for installations where the exciter bridge operates directly from a higher voltage source (up to 1000 Vrms), distinguishing it from the G1 version (typically up to 480 Vrms).
The accurate and immediate feedback from the EBAC board is essential for stable Automatic Voltage Regulation (AVR) and quick response to changes in generator load and grid conditions.
