Woodward 5437-1067A ProTech GII Independent Safety Module

The Woodward 5437-1067A ProTech GII Independent Safety Module is a high-reliability module of the Woodward ProTech GII series, part of Woodward’s SIL-3 overspeed protection system. It is designed to monitor and protect steam, gas and hydro turbines against catastrophic overspeed and over-acceleration events. As an overspeed safety device, it continuously measures turbine speed, detects dangerous acceleration, and triggers protective shutdown before machine limits are exceeded — a dedicated protection channel independent of the turbine governor.

Key Specifications:

• Brand: Woodward
• Model: 5437-1067A
• Series: ProTech GII Overspeed Protection
• Type: Overspeed / over-acceleration protection module
• Safety Level: SIL-3 system
• Application: Steam, gas and hydro turbine protection
• Function: Speed monitoring, overspeed / over-acceleration detection, protective shutdown
• Architecture Note: Independent protection module within ProTech GII system
• Country of Origin: USA

Woodward 5437-1067A ProTech GII Independent Safety Module is the overspeed protection module that watches turbine speed independently from the control loop: it detects overspeed and excessive acceleration on steam, gas or hydro turbines and acts to bring the machine to a safe stop before mechanical limits are reached. Its place in the ProTech GII SIL-3 system means protection is handled by a dedicated, high-reliability path, supporting fail-safe turbine shutdown philosophy.