Turbine & Rotating Machinery Overspeed Protection Solution — WOODWARD 9907-147 | PROTECH 203
Where This Product Is Used
The WOODWARD PROTECH 203 (P/N 9907-147) is a dedicated overspeed protection controller engineered for critical rotating machinery across heavy industry. Typical deployment environments include:
- Steam turbines in power generation plants and cogeneration facilities
- Gas turbines in oil & gas processing, pipeline compression, and LNG terminals
- Industrial compressors in petrochemical and refinery applications
- Hydro turbines in small-to-medium hydroelectric stations
- Turbo-expanders in air separation and gas processing units
- Marine propulsion turbines requiring certified overspeed trip logic
Wherever a rotating shaft must be protected from catastrophic runaway, the PROTECH 203 provides the independent, fail-safe trip channel that safety standards demand.
Technical Specifications
- Part Number: 9907-147
- Series: PROTECH 203
- Manufacturer: WOODWARD
- Function: Electronic overspeed protection / emergency trip controller
- Speed Sensing: Magnetic pickup (MPU) input — passive or active
- Trip Channels: Triple redundant speed sensing with 2-out-of-3 voting logic
- Trip Output: Relay and solid-state outputs for actuator / solenoid trip
- Power Supply: 24 VDC nominal (consult datasheet for full range)
- Communication: Serial / discrete I/O interface
- Enclosure: Panel-mount module, DIN-rail compatible chassis
- Weight: 5.44 kg (module assembly)
- Operating Temperature: Per WOODWARD environmental specification
- Certifications: Designed to meet SIL 2 / SIL 3 functional safety requirements (application-dependent)
Why Engineers Specify This Model
- Independent protection channel: The PROTECH 203 operates entirely independently of the main turbine control system (e.g., MicroNet, 505), ensuring the trip function is never compromised by a control system fault.
- 2oo3 voting architecture: Three independent speed channels with majority-vote logic eliminate nuisance trips while maintaining full protection integrity.
- Proven field reliability: WOODWARD PROTECH systems have accumulated millions of operating hours across global power and process industries.
- Simplified compliance: Pre-engineered to align with IEC 61511 / IEC 61508 safety lifecycle requirements, reducing SIL assessment burden.
- Fast trip response: Sub-millisecond detection-to-trip latency protects machinery before overspeed damage propagates.
- Retrofit compatibility: Drop-in replacement for legacy PROTECH installations; minimizes re-engineering cost during upgrades.
Complete System Bill of Materials
A fully functional PROTECH 203 overspeed protection loop typically includes the following components (available separately on Konmask.com):
- WOODWARD 9907-147 PROTECH 203 — Overspeed Protection Controller (this item)
- Magnetic Pickup Unit (MPU) — speed sensor, e.g., WOODWARD 9905-xxx series
- Redundant 24 VDC power supply module
- Solenoid trip valve / hydraulic trip block (OEM-specified)
- Terminal block wiring harness and shielded MPU cable
- WOODWARD service tool / configuration software (if parameter adjustment required)
Contact [email protected] for a complete BOM quotation tailored to your turbine model.
Compliance & Industry Standards
- IEC 61511 — Functional Safety: Safety Instrumented Systems for the Process Industry Sector
- IEC 61508 — Functional Safety of E/E/PE Safety-Related Systems
- API 670 — Machinery Protection Systems (overspeed trip requirements)
- NFPA 85 — Boiler and Combustion Systems Hazards Code (applicable steam turbine installations)
- ISO 10816 / ISO 20816 — Mechanical vibration evaluation (system context)
Buyers are responsible for verifying that the specific unit revision and firmware version meet the SIL rating required by their safety case. Konmask can provide documentation support upon request.
Quality Assurance & Sourcing
- Genuine WOODWARD product: Konmask sources exclusively from authorized distributors and verified OEM supply chains — no grey-market or counterfeit risk.
- Pre-shipment inspection: Each unit undergoes visual inspection and documentation verification before dispatch.
- Traceability: Serial number and revision level recorded at point of sale; full chain-of-custody documentation available on request.
- Warranty: Supplied with standard WOODWARD manufacturer warranty; extended coverage options available.
- Export compliance: Units shipped in compliance with applicable export control regulations (ECCN / EAR).
How to Source This Part
Procurement is straightforward through Konmask.com:
- Add to cart directly for standard stock units.
- Request a quote for volume orders, project BOM packages, or expedited delivery requirements.
- Email: [email protected]
- Phone / WhatsApp: +0086 19859288691
- Lead time: Contact us for current stock availability and lead time confirmation.
- Shipping: Worldwide export; DHL / FedEx / sea freight options available.
Application-Specific FAQ
Q: Can the PROTECH 203 replace an older PROTECH 202 or 201 unit?
A: In most cases yes — the PROTECH 203 was designed as a backward-compatible upgrade. Verify wiring pinout and firmware revision against your existing installation drawings before replacement.
Q: Does this unit require WOODWARD factory calibration before installation?
A: The 9907-147 ships with factory default parameters. Site-specific overspeed setpoints must be configured using WOODWARD’s service tool by a qualified commissioning engineer.
Q: Is the PROTECH 203 suitable for SIL 2 applications?
A: The PROTECH 203 architecture supports SIL 2 capability in a 1oo1 configuration and SIL 3 in redundant configurations, subject to a full SIL verification per IEC 61508. Consult your functional safety engineer for the specific SIL claim applicable to your installation.
Q: What speed range does the 9907-147 support?
A: The PROTECH 203 supports a wide configurable speed range suitable for most industrial turbine applications. Refer to the WOODWARD product datasheet (available on request) for exact Hz/RPM limits.
Q: Can Konmask provide a test certificate or FAT report?
A: Yes. Factory Acceptance Test (FAT) documentation and material traceability certificates can be arranged. Contact us at the time of order.
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Contact: [email protected] | +0086 19859288691
