Insulators
ST-20/J(R) Porcelain Pin Insulator
Product Overview
20 kV ST-20/J(R) porcelain pin insulator with 175 mm shell diameter.
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Technical Parameters
| Parameter | Unit | Source drawing |
|---|---|---|
| Model | ST-20/J(R) | |
| Rated voltage | kV | 20 |
| Height H | mm | 185 |
| Diameter D | mm | 175 |
| Creepage distance | mm | 400 |
| Puncture voltage | kV | 180 |
| Failing load | kN | 13 |
| Wet power-frequency withstand | kV | 65 |
| Dry power-frequency withstand | kV | 85 |
| Impulse withstand | kV | 135 |
Source Data Note
The source listing table labels ST-20/J with 340 mm creepage; its ST-20/J(R) drawing specifies 400 mm. Values above follow the pictured ST-20/J(R) drawing.
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