Transformer high-voltage bushings with a voltage of 150 kV with RIP insulation are available with a porcelain insulator (STARIP®+ series) and with a polymer insulator (STARIP®-Si+ series) in accordance with the international standard IEC 60137.
Main technical characteristics
| RIP-insulated transformer bushings STARIP®+/STARIP®-Si+ series | 145 | |
| Parameter | U measurement | Meaning |
| Highest operating voltage 50/60 Hz | kV | 145 |
| Partial discharge level | pCL | < 5 |
| Test voltage: 50 Hz;1 min. dry | kV | 305 |
| Lightning impulse test voltage: 1.2/50 µs | kV | 650 |
| Switching test voltage pulse: 250/2500 µs | kV | – |
| Maximum rated current: Imax/450 mm 2 | A | 800 |
| Maximum rated current (removable core): Imax | A | 1600 |
| Maximum rated current fixed core): Imax | A | 2000 |
| Minimum arc path length | mm, SW | 1301 |
| Creepage distance | mm | 4500 |
| Specific creepage distance | mm/kV | 31.0 |
