Woodward 9907-147 | ProTech-203 TMR Overspeed Protection

Availability: 99 left in stock

Woodward 9907-147 ProTech-203 Overspeed Protection System Module The 9907-147 (Model: 9907-147 REV N) is a high-integrity digital overspeed protection device belonging to...

SKU: 9907-147

Manufacturer: Woodward
Product No.: 9907-147
Product Type: TMR Overspeed Protection
Product Origin: USA
Payment:T/T, Western Union
Weight: 6500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Woodward 9907-147 ProTech-203 Overspeed Protection System Module

The 9907-147 (Model: 9907-147 REV N) is a high-integrity digital overspeed protection device belonging to the Woodward ProTech-203 family. Engineered for mission-critical turbine applications, this system employs a Triple Modular Redundant (TMR) architecture to ensure maximum operational safety. The 9907-147 (Part Number: 9907-147) monitors prime mover speed via three independent magnetic pickups (MPUs), each feeding a dedicated CPU. By utilizing two-out-of-three (2oo3) voting logic, the system eliminates single points of failure, providing reliable trip execution even if a single sensor or processor channel fails.

This specific version of the 9907-147 (ProTech-203: 9907-147) is a De-Energize-to-Trip (DET) model. In this configuration, the trip relays are normally energized during safe operation and will de-energize to trigger a turbine shutdown. This fail-safe design ensures that the turbine enters a protected state in the event of total power loss, wire breakage, or internal hardware faults. Adhering to strict industrial safety standards (E-E-A-T), the unit is housed in a lockable metal enclosure, making it the industry standard for protecting gas, steam, and hydro turbines in power generation and petrochemical facilities.

Detailed Technical Specifications

The 9907-147 (9907-147) provides high-resolution speed measurement and ultra-fast hardware-based response times.

Feature	Details
Manufacturer	Woodward
Model Number	9907-147 (Revision N)
Series	ProTech-203 Overspeed Protection System
Trip Logic	De-Energize-to-Trip (DET) / Fail-Safe
Redundancy	Triple Modular Redundant (TMR) / 2oo3 Voting
Input Voltage	24 VDC (18–32 VDC range)
Speed Inputs	3 Independent Magnetic Pickups (MPU)
Trip Response Time	< 12 ms (Deterministic hardware trip)
Relay Outputs	Redundant Form-A / Form-C Safety Relays
User Interface	Three Independent LCDs and tactile keypad
Dimensions	482.6 mm x 310.4 mm x 142.7 mm
Weight	6.5 kg
Communication	Modbus, CANbus, RS-232/RS-485
Operating Temp	–15 °C to +60 °C
Enclosure	Lockable, vibration-resistant metal housing

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