GE IS200HFPAG1ADB High Frequency Power Supply PCB

الوصف

The GE IS200HFPAG1ADB High Frequency AC/Fan Power Supply Board (HFPA) is a specialized printed circuit board (PCB) designed by General Electric for use in the Mark VI Speedtronic Gas and Steam Turbine Control System.¹

Its primary function is to receive and convert input power (AC or DC) into the specific, regulated AC and DC voltages required by the Mark VI control system’s cooling fans and other high-frequency power circuits.²

🛠️ Key Function and Specifications

The IS200HFPAG1ADB is a revision of the IS200HFPA board family. It serves as a vital power component, ensuring the stable operation of critical electronics within the turbine control cabinet.

Functional Details

• Role: High Frequency AC/Fan Power Supply Board (HFPA).³

• Application: GE Mark VI Speedtronic Turbine Control Systems.⁴

• Power Conversion: It takes various AC or DC input voltages and converts them using an internal self-oscillating power supply inverter.⁵

• Output Control: It regulates and supplies power to cooling fans and other internal system power requirements.⁶

Electrical Output Specifications

The board provides several distinct output voltages, with a total output power not exceeding 90 VA:⁷

• AC Output:

  • $48\text{ VAC}$ (Square Wave, ⁸$25\text{ kHz}$)⁹

  • $17.7\text{ VAC}$ (Isolated, Square Wave)¹⁰

• DC Output:

  • $48\text{ VDC}$ (and sometimes listed as ¹¹$52\text{ VDC}$)¹²

Board Features

• Connectors: It typically features four stab-on connectors for power inputs and eight plug connectors for voltage outputs.¹³

• Indicators: Two LED indicators (labeled DS1 and DS2) are included to display the status of the output voltages (e.g., DS2 indicates the status of the ¹⁴$48\text{/52 V}$ outputs).¹⁵

• Protection: The circuitry is protected by a metal oxide varistor and four onboard fuses.¹⁶

• Design: It includes transformers and multiple heat sinks for thermal dissipation, which is crucial for high-frequency power circuits.¹⁷

The board is usually mounted near a fan enclosure or a board rack within the main Mark VI drive cabinets.¹⁸