Turbine Speed Monitoring Solution – Westinghouse 7381A73G01 | WDPF Series
Where This Product Is Used
The Westinghouse 7381A73G01 Speed Sensor Card is a critical signal-conditioning and speed-measurement module deployed in high-reliability industrial control environments. Typical application sites include:
- Coal & Gas Power Plants – Turbine shaft speed monitoring for overspeed protection and load control
- Nuclear Power Facilities – Reactor coolant pump speed feedback within WDPF safety-instrumented loops
- Combined-Cycle Plants (CCGT) – Gas turbine and steam turbine speed sensing for synchronization control
- Petrochemical & Refinery Plants – Compressor and pump speed feedback in distributed control systems
- Steel & Heavy Industry – Rolling mill drive speed regulation via DCS integration
- Water Treatment & Pumping Stations – Variable-speed pump monitoring and protection
Technical Specifications
| Part Number | 7381A73G01 |
| Manufacturer | Westinghouse Electric Corporation |
| Series / Platform | WDPF (Westinghouse Distributed Processing Family) |
| Module Type | Speed Sensor Card |
| Function | Magnetic pickup / proximity sensor signal conditioning & speed measurement |
| Input Signal | Magnetic pickup (MPU) / Variable Reluctance sensor |
| Output | Digital speed value to WDPF backplane / DCS controller |
| Form Factor | PCB card module, rack-mount |
| Weight | 1,760 g (approx.) |
| Compatibility | Westinghouse WDPF DCS racks and chassis |
| Condition Available | Refurbished / Tested / New Old Stock (NOS) |
Why Engineers Specify This Model
- Platform-native integration – Designed exclusively for the WDPF backplane; no signal conversion or adapter required
- High-frequency resolution – Accurately resolves low-pulse-count MPU signals at both low and high shaft speeds
- Proven field reliability – Deployed in power generation assets with multi-decade operational histories
- Overspeed trip support – Provides the speed signal chain required for turbine overspeed protection logic
- Drop-in replacement – Maintains original I/O addressing; no software reconfiguration needed on like-for-like swap
- Obsolescence solution – Sourced from certified surplus channels to extend WDPF system life beyond OEM support windows
Complete System Bill of Materials
The 7381A73G01 typically operates alongside the following WDPF components:
- WDPF Dual Processing Unit (DPU) controller card
- WDPF I/O Expansion chassis / rack
- Westinghouse power supply module (5 VDC / 24 VDC backplane)
- Magnetic pickup sensor (field-mounted, turbine tooth-wheel)
- Shielded twisted-pair signal cable (MPU to card terminal)
- WDPF communication highway interface module
- Engineering workstation running WDPF configuration software
Contact us if you need assistance sourcing any complementary WDPF modules.
Compliance & Industry Standards
- Designed and manufactured under Westinghouse QA programs aligned with ANSI/ISA-84 and IEC 61511 principles
- Suitable for use in SIL-assessed speed monitoring loops (site SIL validation required)
- Compatible with NERC CIP asset management frameworks for power utility control systems
- Meets IEEE 603 criteria for nuclear safety-system design (application-specific; consult your nuclear QA team)
Quality Assurance & Sourcing
- Each unit undergoes visual inspection, board-level cleaning, and functional bench test prior to shipment
- Sourced exclusively from decommissioned power plant inventories and certified surplus dealers – no counterfeit risk
- Traceability documentation (removal records, test reports) available upon request
- Packaged in anti-static ESD bags with foam-lined cartons for safe international transit
- 90-day warranty on all refurbished units; extended warranty available
How to Source This Part
- Confirm your WDPF rack slot designation and existing card revision level
- Submit your purchase order or RFQ via [email protected]
- Receive lead-time confirmation and proforma invoice within 24 hours
- Unit ships via DHL / FedEx with full tracking; typical transit 3–7 business days worldwide
- On-site installation support and remote commissioning guidance available
Application-Specific FAQ
Q: Can the 7381A73G01 be used with non-Westinghouse DCS platforms?
A: No. This card is designed for the WDPF backplane architecture. For third-party DCS integration, a signal converter or replacement with a universal speed input module is required.
Q: What sensor types are compatible with this card?
A: The card is optimized for variable reluctance (VR) magnetic pickup sensors. Compatibility with active (Hall-effect) sensors depends on card revision — contact us with your revision suffix for confirmation.
Q: Is this card suitable for overspeed protection duty?
A: The card provides the speed signal used by the WDPF overspeed protection logic. Final SIL suitability must be validated by your site safety engineer per IEC 61511.
Q: Do you offer exchange / core return programs?
A: Yes. We accept serviceable cores for credit toward replacement units. Contact us for core return terms.
Q: What is the typical lead time?
A: In-stock units ship within 1–2 business days. If not in stock, typical sourcing lead time is 2–4 weeks.
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