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Woodward 8520-0071

  • Product Name: ProTech 203 Overspeed Protection System (Base Unit)
  • Product Description: A triple‑sensor, fault‑tolerant digital overspeed trip device designed to protect prime movers (turbines/engines) from destructive overspeed conditions. It continuously monitors shaft speed via three independent magnetic pickups (MPUs).
  • Technical Specifications:
    • Speed Sensors: 3 × independent MPU inputs
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Detailed content

    • Trip Speed Range: 250–25,000 RPM (user‑configurable)
    • Power Supply: 24 V DC (18–32 V DC)
    • Outputs: 3 × relay trip outputs, alarm contacts
    • Enclosure: NEMA 4, rack‑mountable
    • Dimensions: 483 × 311 × 143 mm
  • Key Features:
    • Triple‑modular redundant (TMR) architecture for safety
    • On‑line testing and real‑time speed display per sensor
    • Independent MPU fault detection with adjustable timeout
    • Compliance with API 670 and IEC 61508 SIL 2
  • Applications:
    • Gas/steam turbines, diesel engines, generators
    • Power generation, oil & gas, petrochemical plants
    • Critical rotating machinery requiring overspeed protection

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