| Application: | High-voltage, High-temperature |
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| Material: | Semiconductor |
| Structure: | Antifouling Insulator |
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| External shed profile glass insulator | |||
| IEC designation | U210BD | U210BD1 | |
| QOCI Type | UG210B170/450D | UG210B170/550D | |
| Mechanical failing load | kN | 210 | 210 |
| Nominal Diameter D | mm | 300 | 340 |
| Nominal Spacing P | mm | 170 | 170 |
| Creepage distance L | mm | 450 | 550 |
| Socket coupling | mm | 20/24 | 20/24 |
| Wet power frequency withstand voltage | kv | 45 | 50 |
| Dry lightning impulse withstand voltage | kv | 120 | 135 |
| Power frequency puncture voltage | kv | 130 | 130 |
| Radio interference voltage(10kV 1MHz) | μv | 50 | 50 |
| Corona visual test P/C | kv | 18/22 | 18/22 |
| Power frequency electric arc voltage | ka | 0.12s/20ka | 0.12s/20ka |
| Impulse puncture voltage | P.U | 2.8 | 2.8 |
| Net weight per unit | kg | 7.5 | 9.5 |
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