Description
Product Parameters
| Parameter | Specification |
|---|---|
| Brand / Series | GE Mark VIe Speedtronic |
| Model | IS200SPIDG1ABA |
| Input Voltage | 125 VDC or 240 VDC (jumpered) |
| Output Rails | +5V @ 20A, +12V @ 5A, -12V @ 3A, +24V @ 2A (isolated) |
| Total Output Power | 250W continuous |
| Protection | Overvoltage, overcurrent, short-circuit, overtemperature |
| Status Indicators | 4 LED indicators per rail (OK/FAULT), input power LED |
| Voltage Regulation | ±1% (all rails) |
| Ripple/Noise | < 50 mV peak-to-peak |
| Isolation | 1500 VAC (input-to-output) |
| Operating Temperature | –30°C to +65°C |
| Mounting | VME 6U rack-mount with backplane connectors |
Advantages & Key Features
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Multiple Isolated Outputs: Provides all necessary voltages for Mark VIe modules in a single board, reducing cabling and external power supplies.
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Comprehensive Protection: Overvoltage crowbar, current limiting, and thermal shutdown protect expensive processor and I/O boards from power faults.
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Status Monitoring: Each output rail has dedicated OK/FAULT LEDs and backplane-accessible status registers via GE ToolboxST.
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High Efficiency: >85% conversion efficiency reduces heat generation within the Mark VIe cabinet.
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Backplane Integration: Directly powers VME backplane slots without external wiring, simplifying installation.
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Drop-In Replacement: Direct mechanical/electrical replacement for earlier GE power boards such as IS200SPIDH1A and IS200SPIDG1A.
Application Fields
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Gas & Steam Turbines (GE Frame 6B/7EA/9E/HA): Supplies power to VME processors (IS420UCSBH1A, IS420UCSCH1A), I/O boards (IS200SCTLG1ABA, IS200SCTTG1AAA), and communication modules.
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Combined Cycle Plants: Powers HRSG control system components.
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Oil & Gas: Provides reliable DC power for compressor station control panels.
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Offshore Platforms: Used in marine turbine enclosures where compact power distribution is essential.
Comparison with Competing Products
| Feature | GE IS200SPIDG1ABA | Competitor A (Emerson PWR Supply) | Competitor B (Siemens PS Module) |
|---|---|---|---|
| Output Rails | 4 (isolated) | 2 (non-isolated) | 3 (non-isolated) |
| Total Power | 250W | 150W | 192W |
| Voltage Regulation | ±1% | ±3% | ±2% |
| Protection | OV, OC, OT, short | OV, OC only | OV, OC only |
| Backplane Direct Power | Yes | No | No |
| Status Monitoring | Per-rail via ToolboxST | External LED only | External LED only |
Key Advantage: IS200SPIDG1ABA provides more isolated output rails and higher total power than competitors, with direct backplane integration and per-rail status monitoring via the Mark VIe system.
Selection Guidelines & Recommendations
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Input Voltage: Select 125 VDC or 240 VDC via onboard jumper. Verify plant battery voltage before setting.
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Load Calculation: Ensure total load on each rail does not exceed specified limits (e.g., +5V @ 20A max). Use GE ToolboxST to monitor rail currents.
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Controller Firmware: Use Mark VIe firmware v6.0 or later for full status register readback from IS200SPIDG1ABA.
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Spare Strategy: Keep one spare per turbine cabinet; lead times typically 6–10 weeks.
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Retrofit: Direct replacement for IS200SPIDH1A and IS200SPIDG1A—no cabling changes required.
Important Cautions
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No Hot-Swap: IS200SPIDG1ABA is not hot-swappable. Always de-energize the Mark VIe rack before insertion/removal.
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Jumper Setting: Input voltage jumper (JP1) must be set before power-on. Incorrect setting will damage the board.
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Load Balance: Do not exceed per-rail current ratings. Distribute loads across rails evenly where possible.
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Cooling: Ensure adequate airflow around IS200SPIDG1ABA as it dissipates up to 40W of heat.
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Grounding: Connect system ground at a single star point to avoid ground loops.
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ESD Handling: Use grounded wrist straps during handling; field repair not possible due to conformal coating.
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