🔹 Product Description
The WOODWARD 8237-1600 is a ProTech-GII Overspeed Protection Device designed for safety-critical turbine and rotating machinery applications. It is a panel-mounted electronic protection system used to monitor rotor speed and acceleration and initiate a shutdown command when dangerous operating conditions are detected.
The 8237-1600 features Triple Modular Redundancy (TMR), with three independent protection modules and 2-out-of-3 (2oo3) voting logic. Its voted input and relay architecture provides reliable overspeed protection while supporting fault detection and maintenance of individual channels.
The device is suitable for steam turbines, gas turbines, hydro turbines, and large industrial rotating equipment. It can operate as an independent protection system or interface with plant control and monitoring systems.

Key Applications:
- Steam turbine overspeed protection
- Gas turbine safety systems
- Hydro turbine protection
- Industrial generator protection
- Compressor and rotating machinery protection
- Power generation facilities
- Turbine emergency shutdown systems
⚙️ Product Datasheet & Parameters
- Brand: WOODWARD
- Model: 8237-1600
- Series: ProTech-GII
- Product Name: Overspeed Protection Device
- Product Type: Electronic Turbine Safety Protection System
- Place of Manufacture: United States (manufacturer origin)
- Product Status: Industrial automation spare part; actual condition depends on supplied unit
- Dimensions: Approximately 330 × 445 × 159 mm
- Weight: Approximately 10 kg
- Country of Origin: USA (verify individual unit nameplate)
- Power Requirements: High Voltage 90–264 VAC or 100–150 VDC; Low Voltage 18–32 VDC
- Power Consumption: Up to 30 W per module
- Mounting Type: Panel Mount
- Protection Architecture: Triple Modular Redundancy (TMR)
- Voting Logic: 2-out-of-3 (2oo3)
- Speed Inputs: 3 independent channels, one per module
- Sensor Compatibility: Magnetic Pickup (MPU) or compatible active speed probe
- Speed Measurement Range: 0.5–32,000 Hz-equivalent speed range, subject to sensor configuration and application
- Trip Outputs: Voted relay outputs
- Alarm Outputs: Independent module alarm relays
- Analog Outputs: Isolated 4–20 mA speed outputs
- Communication: Modbus RTU via RS-232 or RS-485
- Operating Temperature: -20°C to +60°C
- Relative Humidity: Up to 95%, non-condensing
- Safety Certification: IEC 61508 SIL 3
- Industry Standards: API 670, API 611 and API 612
- Discontinued Status: Non-Preferred Woodward model; still supported for existing installations and spare-part requirements. Preferred replacement: 8237-2600.
