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The GE DS200TCPSG1APE DC Power Supply Board is a crucial component of the GE Speedtronic Mark V Turbine Control System.1 Its primary function is to convert the main DC power into the regulated, lower-voltage DC power needed by the other control and I/O boards within the system.2
⚙️ Board Function and Role
The board is a type of TCPS (Turbine Control Power Supply) module, and its role is essential for operating the entire control system:
- Input Conversion: It receives bulk 3$125 \text{ VDC}$ power from the main Power Distribution Board (TCPD) in the power core.4
- Voltage Regulation: It converts and regulates this high DC input into the precise, stable DC voltages required for various control functions.5 These typically include, but are not limited to:
- Microprocessor Power Supplies (e.g., 6$+5 \text{ VDC}$)7
- Analog I/O Power for devices like RTDs (Resistance Temperature Detectors)
- Power for servo valve current outputs and 8$\text{mA}$ output circuits.9
- Location: The DS200TCPSG1APE is installed in the R (Control) and I/O cores of the Mark V panel, where it distributes the necessary power to the surrounding boards.10
📊 Technical Specifications & Connectors
| Specification | Detail |
| Manufacturer | General Electric (GE) |
| Series | Speedtronic Mark V |
| Functional Acronym | TCPS (Turbine Control Power Supply) |
| Product Type | DC Input Power Supply Board |
| Input Power | $125 \text{ VDC}$ |
| Fuses | Contains three fuses for circuit protection. |
| Diagnostics | Includes multiple on-board test points (TP). |
| Configuration | Has no hardware jumpers or software configuration settings. |
Key Connectors
The board features several connectors dedicated to power distribution to other modules:11
- J1: The main input connector for the 12$125 \text{ VDC}$ power supply.13
- JC: Supplies power to the TCQC and TCCA boards (often for power supply diagnostics).14
- JP1 / JP2: Supplies power connections to boards like the TCDA (Digital I/O) and sometimes AAHA boards.15
- 2PL: Used for daisy-chaining power supply voltages to various boards.16
The revision codes (e.g., ‘APE’) indicate specific manufacturing or design modifications compared to the base DS200TCPSG1A model.17
