This power supply board provides regulated DC power for GE Mark V turbine control systems. It converts AC input into stable voltages for all connected modules. You will find this board in power generation and gas turbine applications.
Key Technical Specifications
| Parameter | Details |
|---|---|
| Model Numbers | DS200EXPSG1A DS200EXPSG1ABB |
| Brand | GE (General Electric) |
| Category | Power Supply Board |
| Dimensions (W x H x D) | 280 mm x 180 mm x 35 mm |
| Weight | 1.2 kg |
| Input Voltage | 115V AC or 230V AC (selectable) |
| Output Rails | 5V DC (10A), 12V DC (3A), -12V DC (2A), 24V DC (5A) |
| Onboard Energy Storage | 8 x 1500 µF capacitors (12000 µF total) |
| Component Count | 256 discrete components |
| Output Interface | 2 x 32-pin edge connectors |
| Protection | Overvoltage, overcurrent, thermal shutdown |
| Efficiency | 78% typical at full load |
Physical Layout and Rack Mounting
This power supply board measures 280 mm in width and 180 mm in height. Its depth reaches 35 mm for standard Mark V racks. The unit weighs 1.2 kilograms due to the large transformer and heatsink. Two edge connectors plug directly into the backplane for power distribution.
Internal Architecture and Energy Storage
Two hundred fifty-six components populate this multi-layer power supply board. Eight 1500 µF capacitors create a massive 12000 µF total energy storage bank. This bank rides through AC line drops up to 100 milliseconds. Consequently, the turbine controller continues operating during brief power disturbances. Multiple switching regulators convert the bulk DC into four stable output rails.
Output Rails and Current Capacity
The board delivers 5V DC at 10 amps for logic and processor circuits. It also provides 12V DC at 3 amps for analog interface boards. A -12V rail at 2 amps supplies operational amplifiers and signal conditioners. The 24V rail at 5 amps powers I/O modules and field devices. Each output includes independent overcurrent protection with automatic recovery.
Protection Features and Monitoring
Overvoltage protection clamps each rail to prevent damage to downstream modules. Thermal shutdown disables all outputs when the board exceeds 90°C. The power supply also monitors input undervoltage and reports faults to the CPU. Green LEDs indicate the presence of each output voltage rail. Red LEDs trigger when any protection circuit activates unexpectedly.
Compatibility Note
Both DS200EXPSG1A DS200EXPSG1ABB share identical electrical specifications. The ABB suffix indicates a later hardware revision with improved component sourcing. You can use either version interchangeably in any Mark V rack.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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