Table 1 Material electrical parameters.
From: Research on digital twin diagnosis model for the thermal-electric field of high-voltage switchgears
Material | Copper | Epoxy resin | Air | Wet contamination | Dry contamination |
|---|---|---|---|---|---|
Relative permittivity | 1 × 1013 | 3.9 | 1.0006 | 10 | 3 |
Conductivity (S/m) | 5.99 × 107 | 1 × 10−15 | 1 × 10−14 | 10 | 1 × 10−14 |
Specific heat (J/(kg·K)) | 385 | 19 | 1005 | 628 | 860 |
Thermal conductivity (W/(m·K)) | 400 | 0.2 | 0.025 | 0.6 | 0.4 |
