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Woodward 8237-1246
Product Name: ProTech-GII Overspeed Detection System (Bulkhead Mount, HV/LV, Voted Relays)
Product Introduction: A high-integrity, triple-modular redundant (TMR) overspeed protection system designed for steam, gas, and hydro turbines. It features a 2-out-of-3 voting architecture to ensure safe and reliable turbine shutdown upon detecting overspeed or overacceleration events.
Technical Specifications:
- Mounting Type: Bulkhead mount
Detailed content
- Power Input: Dual redundant HV (90–264 VAC) and LV (24 VDC)
- Operating Temperature: -20°C to +60°C
- Enclosure Rating: IP56 (dust and water resistant)
- Weight: Approx. 10 kg (22 lb)
- Speed Inputs: 3 passive/active magnetic pickup (MPU) channels
- Relay Outputs: 2 dual redundant trip relays (2-out-of-3 voted)
- Communication: Modbus RTU via RS-485
- Response Time: < 40 milliseconds
- Certifications: SIL-3 (IEC 61508), API 670 compliant
Functional Features:
- Triple-modular redundancy with online replaceable modules
- Integrated acceleration detection for overacceleration protectionWoodward
- Automatic overspeed test routine with result logging
- MPU open-wire and loss-of-speed detectionWoodward
- Sulfur-resistant conformal coating for harsh industrial environments
- 4–20 mA analog speed output for remote monitoring
- Comprehensive event logging (last 20 overspeed events, 50 trips)
Application Scenarios:
- Steam, gas, and hydro turbine overspeed protection
- Power generation utility plants
- Oil and gas processing facilities
- Industrial cogeneration plants
- Marine turbine propulsion systems
