| Application: | High-voltage, High-temperature |
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| Material: | Semiconductor |
| Structure: | Antifouling Insulator |
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U70BLP is a glass insulator used for high-voltage transmission lines
Material: Tempered glass
Rated mechanical load: 70kN (approximately 7 tons)
Rated voltage: usually used for voltage levels of 35kV and above
Structure: Suspended structure, composed of iron cap, tempered glass umbrella plate, and steel feet
application area
Mainly used for high-voltage transmission lines, especially for high voltage and ultra-high voltage transmission lines that require high mechanical strength in sections and areas with high pollution levels (depending on the specific design)
Advantages and Characteristics
Zero value self explosion characteristic, easy to detect faults during inspection
Good stain resistance (depending on specific design)
High mechanic strength
long service life
| High voltage Double Shed Antifog Type Glass Insulator | |||
| IEC designation | U70BLD | U70BLD1 | |
| Diameter | mm | 280 | 320 |
| Socket coupling | mm | 146 | 146 |
| Creepage distance | mm | 450 | 550 |
| Socket coupling | mm | 16 | 16 |
| Mechanical failing load | KN | 70 | 70 |
| Wet power frequency withstand voltage | kV | 50 | 55 |
| Dry lightning impulse withstand voltage | kV | 125 | 140 |
| Impulse puncture voltage | P.U | 2.8 | 2.8 |
| Power frequency puncture voltage | kV | 130 | 130 |
| Radio influence voltage | μv | 50 | 50 |
| Corona visual test | kV | 18/22 | 18/22 |
| Power frequency electric arc voltage | ka | 0.12s/20ka | 0.12s/20ka |
| Net weight per unit | kg | 5.8 | 9.2 |
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