الوصف
The part number GE IS200IGEHG1ACA refers to a specific revision of the IGBT Passive Interface Board used in the GE Mark VI Speedtronic Turbine Control System and Innovation Series Drives.
It is functionally the same as the IS200IGEHG1A board, with the final characters, ACA, denoting a specific manufacturing revision, assembly, and protective coating applied to the board.
⚙️ Function of the IS200IGEHG1ACA
The board’s primary role is to act as a passive interface within the high-power electronics section of the drive system:
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Signal Normalization: It provides the necessary signal conditioning and interface components (like resistors and diodes) to ensure the control logic’s signals are correctly and safely delivered to the gate terminals of the large IGBT (Insulated-Gate Bipolar Transistor) power modules.
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Protection: It incorporates passive components such as transient voltage suppression diodes and resistors that help protect the IGBT gates and the control circuitry from electrical noise and voltage spikes generated during high-speed power switching.
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System Integration: It supplies the output stage interface components needed at the IGBT gate terminals for systems using dual IGBT modules. This is crucial in power conversion applications like the turbine’s Static Starter or the Generator Excitation System.
🔍 Technical Details and Revision Code
The structure of the part number is standard for GE industrial control components:
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IS200: Identifies the board as belonging to the GE Mark VI Speedtronic series.
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IGEH: The functional acronym for IGBT Gate Electronics Harness (or Interface).
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H1A: Specifies the core hardware revision.
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CA: The suffix that designates the assembly revision and coating type. In this context, the ‘C’ often indicates a specific Conformal Coating, a protective film that shields the board’s circuits from environmental contaminants like moisture, dust, and chemicals.
This board has no fuses or adjustable hardware, simplifying its maintenance, and it includes two LED indicators that illuminate when the IGBTs are gated ON, which assists with basic diagnostics.



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