GE Electric | DS200ADGIH1AAA | Generator Excitation Control Interface Module
Product Description:
The GE DS200ADGIH1AAA is a Generator Excitation Control Interface Module designed for Speedtronic™ Mark V turbine control systems. It provides critical signal conditioning, isolation, and monitoring between the turbine controller and generator excitation equipment (e.g., automatic voltage regulators).
Product Parameters / Specifications (DS200ADGIH1AAA):
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Feature
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Specification / Description
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Manufacturer
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GE Energy / GE Industrial Systems
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Series
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Speedtronic Mark V Turbine Control System
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Part Number
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DS200ADGIH1AAA
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Module Type
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Excitation Interface / Analog I/O Card
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Input Signals
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Generator Field Voltage (0–300 VDC), Field Current (0–10,000 A via Shunt)
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Output Signals
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Excitation Control (0–10 VDC), Trip Signals (Dry Contact)
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Isolation
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1500V AC (Channel-to-Backplane)
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Accuracy
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±0.2% FS (Voltage/Current Measurement)
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ADC Resolution
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16-bit (Signal Conversion)
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Sampling Rate
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1 kS/s per Channel
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Overload Protection
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150% Continuous, 300% for 1s
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Termination
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Screw Terminal (Field Wiring)
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LED Indicators
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Power, Fault, Channel Activity
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Power Supply
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+5 VDC (Backplane), ±15 VDC (Analog)
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Operating Temp
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-40°C to +70°C
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Compliance
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UL 508, IEC 61000-6-4 (EMC), IEEE C37.90 (Surge Immunity)
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Safety Rating
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SIL 2 (IEC 61508) for Excitation Fault Detection
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Key Features:
- High-Voltage Isolation – Galvanic separation between excitation equipment and control logic.
- Real-Time Monitoring – Tracks generator field voltage/current with <1ms latency.
- Fault Detection – Detects field ground faults, over/under-excitation.
- Redundant Inputs – Dual-channel measurement for critical signals (voting logic).
- Trip Relay Outputs – Hardwired contacts for immediate excitation system shutdown.
- Auto-Calibration – Self-diagnostic routines during startup.
Primary Function & Purpose:
Acts as a secure interface between turbine control and generator excitation systems, ensuring:
- Precise voltage regulation via Automatic Voltage Regulator (AVR) commands.
- Protection against field winding overcurrent/overvoltage.
- Synchronization of generator output with grid frequency.
Typical Applications:
- Generator Excitation Control – Adjusts field current to maintain terminal voltage.
- Protective Relaying – Triggers field breakers during faults (loss-of-field, overfluxing).
- Power Factor Regulation – Manages reactive power (VAR) output.
- Black-Start Support – Controls excitation during grid restoration.
Application Fields:
Critical for grid stability in:
- Power Plants: Gas/steam turbine generators, hydroelectric stations.
- Industrial Cogeneration: Paper mills, chemical plants with self-generation.
- Offshore Platforms: Offshore wind farm collector substations.
- Data Centers: Backup generator excitation management.
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