Woodward 8237-1369 ProTech-GII Overspeed Protection

Overview

The ProTech-GII is a robust and highly configurable overspeed detection system engineered for the safe shutdown of steam, gas, and hydro turbines during overspeed or overacceleration events. It is suitable for turbines of all sizes and integrates seamlessly into existing turbine safety systems. Here are the key features and functionalities of the ProTech-GII:

Key Features & Functionality

1. Acceleration Detection
   • Function: The system can detect high acceleration events by using the derivative of the speed signal.
   • Benefit: Provides an additional layer of protection by issuing a trip command during rapid acceleration, preventing potential damage.
2. MPU (Magnetic Pickup Unit) Detection
   • Function: Each module includes MPU open-wire detection circuitry to ensure proper connection before turbine operation and loss-of-speed detection logic to monitor MPU functionality during operation.
   • Benefit: Enhances reliability by ensuring the speed sensors are functioning correctly, which is critical for accurate speed measurement.
3. Automatic Overspeed Test Routine
   • Function: The ProTech-GII can be configured to perform routine overspeed tests using an internal frequency generator to simulate an overspeed condition.
   • Benefit: Ensures system reliability by regularly testing the overspeed detection functionality and logging the results for maintenance records.
4. Sulfur Contamination Resistant
   • Feature: The unit is coated with a conformal material that offers long-term protection against H2S and SO2 gases.
   • Compliance: Meets IEC 721-3-3 1994 standards for environmental Class 3C2.
   • Benefit: Enhances durability and reliability in environments with sulfur contamination, such as those near oil refineries or chemical plants.
5. On-line Repair
   • Design: Features a triple-modular design (modules A, B, C) allowing one module to be replaced while the turbine continues to operate.
   • Structure: Backplane plug-and-operate structure with module-to-module learning function.
   • Benefit: Minimizes downtime and enhances maintainability by allowing repairs and replacements without shutting down the turbine.

Configurations

• Redundant Trip Relay Outputs: Available in configurations with two dual redundant trip relay outputs using a 2-out-of-3 voted architecture for higher reliability.
• Independent Trip Relay Outputs: Alternatively, three independent non-voted trip relay outputs with individual alarm relays.
• Speed Readouts and Communication: Includes 4–20 mA speed readouts and Modbus® communications for easy integration into any turbine safety system.

Power Input and Mounting

• Power Input: High voltage/low voltage power input.
• Mounting: Panel mount design suitable for integration into various control systems.

The ProTech-GII is a versatile and reliable solution for turbine overspeed protection, offering advanced detection features, robust environmental resistance, and ease of maintenance, ensuring the safety and efficiency of turbine operations.

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Beyond Products: Spare parts hold a crucial role, and we’re here to assist. Inform us of your needs, and we’ll extend our support wholeheartedly.

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E-mail: [email protected]
Business Hours: 24/7
Address: No.601, Hongwen Liuli, Siming District, Xiamen, China

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