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.












