Accelerated life testing of high voltage stator coils with enhanced PET-mica insulation system
Bibliographic record
Abstract
The electrical life of an enhanced PET-mica insulation system used for large rotating electrical machines was investigated by means of voltage endurance (VE) and thermal cycling tests. VE and thermal cycling tests are well understood and industry recognized test methods to qualify new or improved insulation systems. These are reliable test methods for comparing new insulation systems with service proven insulation systems. To develop a life curve, VE testing was performed at three different voltage levels and the acquired data was analyzed using Weibull analysis. A comparison was made between the PET-mica insulation system life curve and those of reference insulation systems. Results indicate that the slope of the VE curve for the new enhanced PET-mica insulation system is changed from previous systems of similar composition, indicating that the life of the insulation system will be comparatively longer and that life and reliability of large motors and generators using this system will be extended.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".