Woodward 8237-2597 ProTech-GII Overspeed Protection System

Product Description

The 8237-2597 is Woodward ProTech‑GII triple redundant overspeed protection device for rotating machinery safety loops. It adopts independent three-channel speed monitoring architecture, receives pulse signals from MPU magnetic pickups, judges overspeed, acceleration faults and triggers trip relays. It is designed for gas turbines, steam turbines, hydro turbines and large reciprocating compressors, providing independent safety protection separate from the main governor control system.

Features

• Part No: 8237-2597, Brand: Woodward
• 3-channel independent speed monitoring, configurable 2oo3 voting trip logic
• SIL3 capable safety protection for turbo machinery overspeed
• Power supply: 24 VDC, bulkhead mounting type
• Local HMI: three independent LCD displays and keypad sets for each channel
• 4‑20mA analog output for real-time speed transmission to DCS/SCADA
• Modbus RS232/RS422 communication for remote reading and fault logging
• Built-in MPU cable break, short circuit and internal hardware self-diagnosis
• Supports online maintenance of single channel without tripping the whole system
• Conformal coated PCB option for humid, dusty turbine room environments

Applications

• Gas turbine, steam turbine, hydro turbine safety protection cabinet
• Power plant, refinery, oil & gas offshore platform turbo-machinery
• Reciprocating compressor and large rotating equipment overspeed safety loop
• Legacy ProTech-GII spare replacement and safety system retrofit
• Independent overspeed protection, isolated from turbine governor controller

FAQ

Q: What is the difference between ProTech-GII and regular speed governor?
A: The governor is for normal speed regulation; ProTech-GII is dedicated safety overspeed protection, independent safety trip layer.

Q: Is this SIL3 certified?
A: Yes, the ProTech-GII series supports SIL3 safety integrity level for turbine overspeed protection applications.

Q: Is this unit discontinued?
A: ProTech-GII is mature safety product, original production stopped, supplied as surplus, refurbished and tested spare parts only.

Q: What sensors does it connect to?
A: Magnetic pickup (MPU) speed sensors, standard passive speed probes for shaft pulse detection.