Glass post insulator ISHOS-20-10UHL1
| Nominal voltage, kV | 20 |
| Highest working voltage, kV | 24 |
| Minimum lightning impulse withstand voltage, kV | 125 |
| 50%- discharge voltage of industrial frequency at polluted and humid conditions, kV | 26 |
| For specified surface conductivity of polluted layer, mkCm | 10 |
| Minimum failing torsion moment, kNxm | 10 |
| Minimum creepage distance, sm | 30 |
| Bottom flange fitting dimensions, mm | Ø140* 4, hol Ø13 |
| ISHOS-20-10UHL1 |  |
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