Experience with DC Ramp Test Performed on Asphalt-Mica insulated Hydraulic Generators
Bibliographic record
Abstract
In order to prevent forced outages of old generators, condition-based maintenance and diagnostic tests are periodically conducted on their stator insulation systems. The DC ramp test is easy to perform, involves a light material and has proven to be an effective and nondestructive means for reducing in-service stator failure. During a DC ramp test, the I-V curve is continuously recorded. A recently developed method of modeling facilitates the separation of the measured current curve into its leakage, absorption and capacitive components. This modeling also helps to precisely point out the outset of any non linearity in the leakage current that could be related to a defect in the insulation system. This paper presents DC ramp test results conducted on old asphalt insulated machines. Modeling of the I-V curves is also performed and the results are compared with similar measurements conducted on a spare coil.
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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 | 0.000 |
| 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) | 0.000 | 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".