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CTV 254 isolateur en verre is used in high-voltage power transmission systems ranging from 10 kV to 330 kV. It has a diameter of 254 mm, a creepage distance of 320 mm, and can withstand a minimum mechanical failing load of 70 kN.Highly popular in the Algerian market, the CTV 254 glass insulator offers long-term reliability. Even after 30 years of operation, it maintains excellent mechanical and electrical properties.
lf there is no special instruction, W pin is used for U70B
| IEC designation | U70BL/146 | U70BS/127 | |
| Diameter D | mm | 255 | 255 |
| Height H | mm | 146 | 127 |
| Creepage distance L | mm | 320 | 320 |
| Socket coupling | mm | 16 | 16 |
| Mechanical failing load | kn | 70 | 70 |
| Mechanical routine test | kn | 35 | 35 |
| Wet power frequency withstand voltage | kv | 40 | 40 |
| Dry lightning impulse withstand voltage | kv | 100 | 100 |
| 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 | 3.6 | 3.5 |
Key Features of Glass Electric Insulators:
Superior Dielectric Strength: Glass provides excellent electrical insulation, minimizing the risk of current leakage and ensuring safety.
Durability: Resistant to weathering, UV radiation, and temperature fluctuations, glass insulators maintain their integrity over time.
Transparency: The clear nature of glass allows for straightforward visual inspections, facilitating maintenance and early detection of potential issues.
Advantages Over Other Materials:
Self-Cleaning Properties: The smooth surface of glass reduces the accumulation of dirt and pollutants, decreasing maintenance requirements.
Mechanical Strength: Engineered to withstand mechanical stresses, glass insulators are suitable for various environmental conditions.
Environmental Impact: Glass is recyclable, making it an eco-friendly choice for sustainable infrastructure projects.
we welcome you to video factory inspection at any time during working hours in ChinaJiangxi QOCI Electric Co.,Ltd.has been specialized in research and development of latest high-strength functional glass and power transmission insulators,which is the qualified supplier for State Grid Corporation of China and Southern State Grid Corporation of China,and is a participating unit of product standard formulation of the National Insulator Standard Committee.
The main products type are :standard-type insulator,antipollution-type insulator,aerodynamic type insulator,multi-umbrella type insulator,ground-wires type insulator,post insulator for line,pin insulator.Products are mainly used for transmission line insulation, suspension, support, tension conductors.Our products are divided into 5 major series: the standard type 40-550kN,filth-resistant type 70-420kN,aerodynamic type 120-300kN,multi-umbrella type 120-300kN,and ground circuit type,able to be used for line voltage from 10kV~1000kV.
