Table 1 Insulation aging acceleration factor for continuous operation at the hottest spot temperature during one load cycle [33]
From: Fuzzy logic applied to the diagnosis of technical conditions of distribution transformers
Hottest spot temperature °C (HST) | Insulation aging acceleration factor (IAAF) |
|---|---|
110 | 1.00 |
120 | 2.71 |
130 | 6.98 |
140 | 17.2 |
150 | 40.6 |
160 | 92.1 |
170 | 201.2 |
180 | 424.9 |
190 | 868.8 |
200 | 1723 |