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Woodward 9907-147 ProTech 203 Overspeed Protection System

  • Product Name: Woodward 9907-147 ProTech 203 Overspeed Protection System
  • Product Description: A dedicated, microprocessor-based overspeed protection system designed to provide reliable, fail-safe overspeed shutdown for engines, turbines, and rotating machinery. It features redundant sensing and 2-out-of-3 voting logic for critical safety applications.
  • Technical Specifications:
    • Power Supply: 24 VDC (18–32 VDC)

Detailed content

    • Speed Inputs: 3 independent Magnetic Pickup (MPU) inputs
    • Speed Range: 100–20,000 rpm
    • Accuracy: ±0.25% of setpoint
    • Response Time: <20 milliseconds
    • Relay Outputs: 2 de-energize-to-trip relays, 1 alarm relay
    • Display: 3 LCD displays, 2 lines x 16 characters
    • Dimensions: 184 x 133 x 64 mm
    • Weight: 2.5 kg
    • Operating Temperature: -40°C to +65°C
  • Key Features:
    • 2-out-of-3 (2oo3) voting logic for trip decisions
    • Independent power supplies for each sensing channel
    • Adjustable overspeed trip points and time delays
    • Built-in self-test and continuous diagnostics
    • Non-volatile event logging for post-incident analysis
    • Manual and remote reset capabilities
    • Certified for use in safety instrumented systems (SRS)
  • Applications: Steam turbines, gas turbines, industrial engines, compressors, pumps, and any high-speed rotating equipment requiring certified overspeed protection.

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