Woodward 8237-1246 ProTech‑GII Overspeed Protection Module

Product Description

The Woodward 8237‑1246 is a ProTech‑GII overspeed protection module designed for high-reliability turbine safety. It provides rapid detection of overspeed or over-acceleration events, enabling safe turbine shutdown to prevent catastrophic failures. Moreover, its modular design ensures continuous operation even during maintenance or module replacement.

This overspeed protection device suits steam, gas, and hydro turbines in power generation and industrial facilities. In addition, it offers robust resistance to sulfur, H₂S, and SO₂ environments, making it ideal for oil & gas and corrosive applications. Remote monitoring via Modbus allows real-time diagnostics, helping engineers track performance efficiently.

Functional Highlights

• Triple Modular Redundancy (TMR): Three independent speed-sensing modules guarantee uninterrupted operation.

• Fast Response: Detects overspeed events within milliseconds, reducing mechanical risk.

• Online Replaceability: Modules can be swapped while the system remains fully operational.

• Sulfur Contamination Resistance: Reliable performance in H₂S and SO₂ environments.

• Remote Monitoring: Modbus connectivity supports diagnostics and data logging.

• Flexible Trip Outputs: Dual redundant or independent relay outputs support multiple configurations.

• Advanced Safety Functions: Monitors overspeed, over-acceleration, and provides fault diagnostics.

Technical Specifications

• Enclosure Type: IP56

• Dimensions: 330 × 486 × 153 mm

• Weight: 2.2lbs

• Operating Temperature: –4 to +140 °F

• Storage Temperature: –4 to +158 °F

• Power Supply:

• 90–264 Vac / 47–63 Hz

• 100–150 Vdc @ 30 W per module

• Relay Outputs: Three independent non-voted trip relays, 2-out-of-3 voted architecture

• Speed Readouts: 4–20 mA analog output

• Vibration Resistance: 0.04 G²/Hz, 1.04 Grms, 10–500 Hz

• Keypad/Display: Three 4.2-inch displays

• Nominal Output Voltage: 115 Vac / 240 Vac / 125 Vdc; Low output: 24 Vdc

• Communication Protocol: Modbus for integration with plant automation systems

Typical Applications

• Steam turbines in power generation plants

• Gas turbines in industrial and energy facilities

• Hydro turbines in renewable energy applications

• Oil & gas facilities requiring corrosion-resistant safety modules

• Critical industrial systems demanding fast overspeed protection

FAQ

Q1: Can the 8237‑1246 operate while modules are replaced?
A1: Yes, its online replaceable modular design allows uninterrupted operation during maintenance.

Q2: What types of turbines are supported?
A2: The module supports steam, gas, and hydro turbines in industrial and power generation applications.

Q3: How fast does it respond to overspeed events?
A3: The system detects overspeed within milliseconds, ensuring immediate protective action.

Q4: Is it suitable for harsh environments with sulfur exposure?
A4: Yes, it resists H₂S and SO₂ contamination, making it ideal for corrosive conditions.

Q5: Can it integrate with plant automation systems?
A5: Yes, it supports Modbus protocol for remote monitoring and diagnostics.