Bibliographic record
Abstract
This paper presents results on a preliminary characterization of several new extruded distribution cable technologies. Most of the power cables are of the 28 kV class and were extruded with different insulation and shield materials. Five types of insulation were used: conventional crosslinked-polyethylene (XLPE); three water tree retardant XLPE (WTRXLPE); and ethylene propylene rubber (EPR). Three types of semiconductive shields were also considered. The characterization comprised water and impurity contents of both the insulation and the shields, degree of crosslinking of the XLPE insulation, thermogravimetry (TGA) to evaluate the filler concentration in EPR and AC breakdown (ACBD) measurements on cable samples. The results show principally that the new technology cable components absorb much more water and that their insulations contain more impurities and their shields less than the conventional ones. Insulation is better crosslinked nowadays. The filler is well distributed in the EPR insulation thickness. XLPE and EPR cables have greater ACBD strength than WTRXLPE ones. A temperature rise of one of the WTRXLPE cable has been observed and attributed to thermal runaway.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".