The GE IS200EPDMG1A is a critical component from GE's Mark VI turbine control system, specifically designed as an Exciter Power Distribution Module (EPDM). Here's a comprehensive technical breakdown
GE IS200EPDMG1A Core Functionality
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Distributes and regulates excitation power to generator field windings
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Interfaces between the Mark VI controller and exciter/stator circuits
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Provides protective relaying for overcurrent/undervoltage conditions
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Dual redundant power inputs (typically 125V DC)
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IGBT-based pulse-width modulation (PWM) output
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Built-in self-test and diagnostics
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Hot-swappable design (with proper procedures)
GE IS200EPDMG1A Technical Specifications
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Input Voltage:90-150V DC (nominal 125V)
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Output Current:0-10A DC (continuous), 15A (short-term)
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Control Signals:±10V analog, TTL discrete
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Response Time:<100μs for fault detection
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Isolation:2500V AC input-to-output
GE IS200EPDMG1A Physical Characteristics
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Dimensions: 9.5" x 5.3" x 1.75" (241mm x 135mm x 45mm)
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Weight: 4.2 lbs (1.9 kg)
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Connectors:
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48-pin AMP (control signals)
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25A screw terminals (power)
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Cooling: Natural convection (derating required above 50°C)
GE IS200EPDMG1A Compatibility
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Controllers: Mark VI, Mark VIe (with adapter)
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Exciters: GE EX2100, ALSPA
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Replacements:
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IS200EPDMG2A (next-gen version)
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IS215EPDMG1A (SIL-3 compliant)