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The GE IS200HFPAG2A is a High-Frequency AC/Fan Power Supply Board (HFPA), often referred to as a Fan/Transformer Card, within the General Electric Mark VI Speedtronic Turbine Control System.
Its core function is to be the primary power conversion and regulation source for the system’s cooling fans and other isolated, high-frequency circuits. This role is essential for thermal management and ensuring stable, clean power for the sensitive control electronics.
⚡ Key Specifications and Functions
The IS200HFPAG2A is an updated revision (G2) of the HFPA board, but it maintains the same fundamental purpose as the G1 version, providing power conditioning for auxiliary circuits.
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System: GE Mark VI Speedtronic Turbine Control System.
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Role: Converts high-voltage input (AC or DC) into regulated, low-voltage outputs.
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Input Power: Can receive high-voltage AC or DC input (e.g., 230 VAC). Input connections are typically made via four stab-on connectors.
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Key Outputs: It generates specific outputs, primarily a square wave AC/DC voltage for the fans and an isolated AC voltage for power circuitry.
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52 VDC / 52 VAC (Squarewave)
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17 VAC (Squarewave, used for isolated power)
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Output Capacity: The total load supplied by the board must not exceed 90 VA (Volt-Amperes).
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Cooling Management: The main application is powering the cooling fans mounted in the control cabinet to prevent overheating of the I/O and processor boards.
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Protection: The board includes four fuses and a Metal Oxide Varistor (MOV) to protect the circuit against power surges and overcurrent events.
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Diagnostics: Two Status LEDs (typically DS1 and DS2) are present to indicate the operational status of the output voltages (the 17V and 48V/52V outputs).
In summary, the IS200HFPAG2A is a critical utility board that underpins the reliability of the entire Mark VI system by ensuring stable power delivery and temperature control.
