Product details
| 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 |
A high-quality 120kN high voltage suspension glass insulator, such as the U120B, is an essential component in overhead power transmission lines. These insulators are designed to withstand high mechanical loads and provide reliable insulation for the conductors.
The U120B insulator is engineered to meet the stringent requirements of high voltage transmission systems. It is constructed from high-quality, specially treated glass that is capable of withstanding the rigors of outdoor exposure and harsh weather conditions. The insulator is designed to provide excellent electrical insulation properties, ensuring the safe and efficient transmission of electricity.
With a rated mechanical tension of 120kN, the U120B insulator is capable of supporting heavy conductor loads and withstanding high wind and ice loads. This makes it suitable for use in both medium and high voltage transmission lines. The insulator is also designed to be corrosion-resistant, ensuring a long service life and minimal maintenance requirements.
The U120B insulator is easy to install and maintain, making it a cost-effective choice for power utilities. Its robust construction and high-quality materials ensure reliable performance under all operating conditions. Additionally, the insulator is designed to comply with international standards and specifications, guaranteeing its quality and reliability.
In conclusion, a good quality 120kN high voltage suspension glass insulator like the U120B is an essential component for ensuring the safe and reliable operation of overhead power transmission lines. Its high mechanical strength, excellent electrical insulation properties, and corrosion resistance make it a reliable choice for power utilities looking to ensure the efficiency and reliability of their transmission systems.
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