| Application: | High-voltage, High-temperature |
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| Material: | Semiconductor |
| Structure: | Antifouling Insulator |
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| IEC designation | U70BLD | |
| QOCI Type | UG70B146/450D | |
| Mechanical failing load | kN | 70 |
| Nominal Diameter D | mm | 280 |
| Nominal Spacing P | mm | 146 |
| Creepage distance L | mm | 450 |
| Socket coupling | mm | 16 |
| Wet power frequency withstand voltage | kv | 45 |
| Dry lightning impulse withstand voltage | kv | 120 |
| Power frequency puncture voltage | kv | 110 |
| Radio interference voltage(10kV 1MHz) | μv | 50 |
| Corona visual test P/C | kv | 18/22 |
| Power frequency electric arc voltage | ka | 0.12s/20ka |
| Impulse puncture voltage | P.U | 2.8 |
| Net weight per unit | kg | 5.4 |
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