11kV & 33kV high voltage U70BL 70KN Glass insulator
IEC designation | U40B/110 | U70B/146 | U70B/127 | U100B/146 | U100B/127 | U120B/127 | U120B/146 | U160B/146 | U160B/155 | U160B/170 | |
Diameter D | mm | 178 | 255 | 255 | 255 | 255 | 255 | 255 | 280 | 280 | 280 |
Height H | mm | 110 | 146 | 127 | 146 | 127 | 127 | 146 | 146 | 155 | 170 |
Creepage distance L | mm | 185 | 320 | 320 | 320 | 320 | 320 | 320 | 400 | 400 | 400 |
Socket coupling | mm | 11 | 16 | 16 | 16 | 16 | 16 | 16 | 20 | 20 | 20 |
Mechanical failing load | kn | 40 | 70 | 70 | 100 | 100 | 120 | 120 | 160 | 160 | 160 |
Mechanical routine test | kn | 20 | 35 | 35 | 50 | 50 | 60 | 60 | 80 | 80 | 80 |
Wet power frequency withstand voltage | kv | 25 | 40 | 40 | 40 | 40 | 40 | 40 | 45 | 45 | 45 |
Dry lightning impulse withstand voltage | kv | 50 | 100 | 100 | 100 | 100 | 100 | 100 | 110 | 110 | 110 |
Impulse puncture voltage | P.U | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 |
Power frequency puncture voltage | kv | 90 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 | 130 |
Radio influence voltage | μv | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
Corona visual test | kv | 18/22 | 18/22 | 18/22 | 18/22 | 18/22 | 18/22 | 18/22 | 18/22 | 18/22 | 18/22 |
Power frequency electric arc voltage | ka | 0.12s/20kA | 0.12s/20kA | 0.12s/20kA | 0.12s/20kA | 0.12s/20kA | 0.12s/20Ka | 0.12s/20Ka | 0.12s/20Ka | 0.12s/20Ka | 0.12s/20Ka |
Net weight per unit | kg | 2.1 | 3.6 | 3.5 | 4 | 4 | 4 | 4 | 6.7 | 6.6 | 6.7 |