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GE DS3815PDPA
Product Name: GE DS3815PDPA 125V PSU Board
Overview:
The DS3815PDPA is a power supply module for the Mark VI Speedtronic turbine control rack, configured for 125 VDC input with extended temperature capability and enhanced mechanical robustness. This IS200-series PSU converts a 125 VDC plant supply into the regulated voltages required by the CPU, I/O boards, and backplane. It is discontinued by GE with limited stock available.
Detailed content
Technical Specifications:
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Series: Mark VI / IS200 Speedtronic
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Input Voltage: 125 VDC (90–150 VDC range)
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Outputs: 48 VDC / 24 VDC / 5 VDC
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Total Capacity: 250W
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Hold-Up Time: 20 ms at full load, 125 VDC input
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Inrush Current Limiting: Yes, soft-start circuit
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Protection: Overvoltage, overcurrent, overtemperature, input reverse polarity
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Status Outputs: DC OK, Overload, Overtemperature
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Connector: Backplane card-edge connector + 2 × front-panel terminal blocks
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Cooling: Convection (no fan)
Performance Parameters:
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Operating Temperature: -40 to +75°C (derate above 65°C)
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Storage Temperature: -40 to +85°C
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Filtering Efficiency: 85% at full load
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Vibration Resistance: Enhanced (tested to 2g, 10–500 Hz)
Material Composition:
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Large components secured with industrial adhesive
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Reinforced solder joints on critical connections
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105°C-rated capacitors and higher-grade semiconductors
Features:
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Vibration-resistant construction for turbine decks and compressor stations
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Direct 125 VDC input compatibility (standard turbine control bus voltage)
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Extended temperature range (5°C higher than standard PAAA variants)
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Full 250W capacity sufficient for heavily populated 15-slot racks
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Cost-effective vibration solution (lower cost than PDMA with conformal coating)
Applications:
Turbine decks, compressor stations, and other high-vibration environments where standard PSUs develop cracked solder joints.
Precautions:
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Every unit should run on test rig at +75°C ambient for 24 hours, pulling full 250W load before deployment
