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The LXY Series U120BL Glass Insulator is engineered for high-voltage overhead transmission systems where mechanical strength, long-term stability, and dielectric reliability are essential. Featuring tempered toughened glass, this U120BL glass insulator provides exceptional resistance to electrical stress, weather exposure, and mechanical vibration. The smooth surface reduces pollution buildup, resulting in stable insulation performance over many years. This model is widely used in utility line upgrades, new infrastructure installations, and power grid modernization.
• Toughened glass construction with strong mechanical load rating
• Excellent pollution resistance and self-cleaning characteristics
• High dielectric strength and stable insulation performance
• Suitable for harsh outdoor and high-altitude environments
• Long service life with minimal maintenance requirements
The LXY U120BL glass insulator is suitable for multiple power system environments, including:
High Voltage Transmission Towers：Installed as part of insulator strings to support conductors and maintain necessary electrical clearance.
Substation Line Terminations：Ensures insulation between energized conductors and supporting equipment at substation entry and exit points.
Long-Distance Utility Lines：Used in high-tension or long-span sections that require strong mechanical capability.
Coastal or Industrial Pollution Zones：The smooth glass surface reduces contamination accumulation and improves insulation reliability.
Grid Modernization and Replacement Projects：Can replace porcelain models to improve reliability and reduce maintenance frequency.
(1) Compared with porcelain, it has a very high dielectric strength;
(2) High electrical resistivity;
(3) Compared with porcelain insulators, it has higher tensile strength;
(4) Due to its transparent nature, it will not be heated in sunlight like porcelain;
(5) The impurities and bubbles inside the glass insulator body are easily detected due to their transparency;
(6) The service life of glass is very long because its mechanical and electrical properties are not affected by aging;
(7) Glass is cheaper than porcelain.
Type | IEC Class | D mm | Hmm | Creepage Distance mm | Coupling Size | Min.Mechanical Failing Load KN | Min.Impact Failing Load KN | Min.Lighting Impulse Withstand Volt .KV | Power Frequency Withstand Volt.KV | Approx.Net Weight kg | |
Min.Wet One Minute | Min.Puncture volt. | ||||||||||
LXY-120 | U120BL | 255 | 146 | 320 | 16 | 120 | 678 | 100 | 40 | 110 | 4.2 |
Each unit undergoes mechanical tensile testing, dielectric strength evaluation, and environmental cycling tests to ensure compliance with international power utility standards.
Q1：Is the LXY U120BL glass insulator resistant to UV or aging?
A1: Yes, the toughened glass maintains strength and clarity under long-term exposure.
Q2：Can it replace porcelain or composite insulators directly?
A2: Yes, most installations allow direct replacement due to compatible dimensions and ratings.
Q3：Does it require frequent cleaning or maintenance?
A3: No, the surface offers a natural self-cleaning effect, reducing maintenance needs.
Q4：Is it suitable for polluted or coastal areas?
A4: Yes, its surface prevents heavy contamination buildup, making it reliable in harsh environments.
