Generator Stator Winding RTDs
Customized Generator Stator Winding RTDs
Summary
High‑reliability stator winding RTDs designed for hydroelectric generator monitoring. Built to deliver accurate temperature measurement, stable long‑term performance, and consistent build quality—from rehabilitation and rewind programs to replacements and retrofits.
Key Benefits
- Accurate, repeatable measurement for dependable monitoring
- Robust mechanical design to withstand generator installation and operation
- Consistent build quality via CNC‑machined laminates and controlled processes
- Traceable performance with calibration against recognized standards
- Configurable for generator design, geometry, and customer preferences
Built Differently
Pyrovia’s stator winding RTDs are produced using methods that improve control over geometry, structural integrity, and repeatability—resulting in RTDs tailored to the generator and the demands of hydro service.
- CNC‑machined laminate components for precise geometry and consistent quality
- Ability to machine insulating and semiconductive laminates for different application needs
- Monolithic probe body design for excellent resistance to compressive loads
- Custom probe configurations to support a wide range of rehabilitation and rewind requirements
Validated for Reliability
Each RTD is validated through testing that reflects in‑service conditions—supporting product integrity before installation and confidence in operation.
- High‑voltage hipot testing under static load to simulate field conditions and identify defects before installation
- Dielectric testing up to 5000 VAC for rigorous pre‑installation validation
- 8,000‑hour thermal aging at 180°C (with C2Mi) to assess long‑term reliability
- Successful thermal aging representative of approximately 25 years of typical hydro generator operation
Engineered for Performance
Design choices focus on stable, accurate measurement and dependable service in hydro applications.
- True bifilar heavy‑gauge platinum sensing element for improved noise immunity
- Class H components/consumables (RTI 180°C) for temperature resilience
- Calibration against traceable standards to support measurement accuracy
- Controlled HVLP paint application for uniform coating thickness and surface resistivity
- Support for alkyd‑based and epoxy‑based paint systems to meet installation requirements
Applications
- Generator rehabilitation programs
- Rewind projects
- Replacement and retrofit work
- Temperature monitoring of essential hydro generator assets
Typical Configuration Options
- Elements: single or dual
- Laminate body: insulating or semiconductive
- Geometries & dimensions: custom to slot/winding requirements
- Coatings: alkyd‑based or epoxy‑based (HVLP‑applied)
- Construction details: tailored to installation method and clearance
Key Specifications
- Element: Platinum 100 Ω at 0°C (0.00385 TCR)
- Wiring: 3‑ or 4‑wire; simplex or duplex
- Operating range: 0°C to 180°C
- Accuracy: Meets EN 60751, Class B, from 25°C to 150°C
- Laminates: NEMA G11 Class H / semiconductive Class H
- Cable: 22 AWG SPC, NEMA WC 27500
- Coatings: Alkyd or epoxy semiconductive coatings (HVLP applied)
- Dielectric strength: Up to 5000 VAC
- Compressive load strength: Up to 120 PSI
Why Pyrovia for Stator Winding RTDs
For teams that need more than a conventional probe, Pyrovia combines specialized manufacturing, controlled materials and coatings, and meaningful validation testing to deliver RTDs engineered for structural resilience, measurement performance, and long‑term reliability in hydro generator service.
