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Excellent anti-pollution flashover performance: This is its most important performance characteristic. Through a special umbrella skirt structure design and increased creepage distance, the insulator can effectively suppress the occurrence of partial discharge in a polluted environment, improve the flashover voltage, and reduce the occurrence rate of flashover accidents.
Keywords:
U160BLP1
Product Details
Structural Design
Optimized umbrella skirt structure: Anti-fouling disc-shaped suspension toughened glass insulators usually adopt a double-umbrella or bell-shaped umbrella skirt design. The double-umbrella structure insulator has an open umbrella shape, a smooth inner skirt without ridges, which can effectively reduce the accumulation of dust and dirt, resulting in a low dust accumulation rate and good self-cleaning performance in wind and rain; the bell-shaped umbrella skirt utilizes the different wetting periods inside and outside the umbrella and the discharge suppression effect of the high ridge under the umbrella to improve the anti-fouling performance.
Increased creepage distance: By adding several deep ridges to the lower surface of the umbrella skirt or increasing the size of the umbrella skirt, the creepage distance of the insulator is increased. The creepage distance is generally 20%~30% higher than that of ordinary insulators, or even more, thereby improving the electrical strength of the insulator under polluted conditions.
Advanced connection structure: Using internationally advanced cylindrical head structure, the head is small in size, light in weight, and high in strength, which can save metal materials and reduce the cost of lines. At the same time, to meet the needs of live operation, the traditional domestic structure shape is adopted on the brim for easy installation and maintenance.
Performance Characteristics
1. Good anti-flashover performance: This is its most important performance characteristic. Through special umbrella skirt structural design and increased creepage distance, the insulator can effectively suppress the occurrence of partial discharge in a polluted environment, improve the flashover voltage, and reduce the occurrence rate of flashover accidents.
2. Self-breaking at zero value, easy to detect: Like ordinary toughened glass insulators, it has the characteristic of self-breaking at zero value. When defects or aging occur inside the insulator, causing the insulation performance to decrease to a certain extent, it will automatically break, making it easy for operation and maintenance personnel to observe and find on the ground or by helicopter, eliminating the need for pole-by-pole inspection, reducing labor intensity, and saving line maintenance costs.
3. Good arc resistance and vibration resistance: After being burned by lightning during operation, the new surface is still a smooth glass body, and there is a tempered internal stress protection layer, which can still maintain sufficient insulation performance and mechanical strength. At the same time, under vibration conditions such as conductor swing, the electromechanical performance is not easily attenuated.
4. Good self-cleaning performance, not easy to age: Glass insulators themselves have the characteristics of not being easy to accumulate dirt and easy to clean. Glass insulators operating on southern lines are relatively clean after being washed by rain. Moreover, after long-term operation, its electromechanical performance is basically the same as when it left the factory, and no obvious aging phenomenon has occurred, and the service life is long.
5. Large main capacitance, uniform voltage distribution in series: The dielectric constant of glass is 7-8. This gives glass insulators a larger main capacitance, and the voltage distribution in series is uniform, which helps to reduce the voltage borne by the insulators near the conductor side and the grounding side, thereby reducing radio interference, reducing corona loss, and extending the life of the insulators.
Application Scenarios
1. Areas with severe industrial pollution: such as transmission lines near metallurgical, chemical, and cement plants. These areas contain a large amount of dust and waste gas pollutants in the air, which easily accumulate on the surface of insulators, leading to insulator flashover. Anti-fouling disc-shaped suspension toughened glass insulators can effectively resist the erosion of these pollutants and ensure the safe operation of the lines.
2. Coastal areas: Coastal areas have high air humidity and contain salt, which is highly corrosive to insulators. Ordinary insulators are prone to flashover accidents. Anti-fouling disc-shaped suspension toughened glass insulators have good anti-fouling performance and corrosion resistance, and can adapt to the harsh environment of coastal areas.
3. Foggy areas: In foggy areas, the surface of insulators is prone to forming a wet water film, causing soluble substances in the dirt to dissolve and form a conductive layer, increasing the risk of flashover. The special structure and performance of anti-fouling disc-shaped suspension toughened glass insulators can effectively prevent this from happening and ensure the safe operation of the lines in foggy weather.
| Structural Type | Product Model | Mechanical Rupture Load (kN) | Maximum Nominal Diameter (mm) | Nominal Structural Height P (mm) | Minimum Nominal Creepage Distance (mm) | Connection Type Marking | Type of Locking Pin | Single weight (KG) |
| Standard Type | U70BLP | 70 | 255 | 146 | 400 | 16 | W | 4 |
| U70BLP1 | 70 | 280 | 146 | 450 | 16 | W | 5.3 | |
| U70BLP2 | 70 | 320 | 146 | 550 | 16 | W | 8.5 | |
| U100BLP | 100 | 260 | 146 | 400 | 16 | W | 5.7 | |
| U100BLP1 | 100 | 280 | 146 | 450 | 16 | W | 5 | |
| U100BLP2 | 100 | 330 | 146 | 550 | 16 | R | 8.5 | |
| U120BP | 120 | 260 | 146 | 400 | 16 | R | 5.9 | |
| U120BP1 | 120 | 280 | 146 | 450 | 16 | R | 5.3 | |
| U120BP2 | 120 | 330 | 146 | 550 | 16 | R | 8.5 | |
| U160BMP | 160 | 280 | 155 | 450 | 20 | R | 8.6 | |
| U160BLP | 160 | 280 | 170 | 450 | 20 | R | 8.9 | |
| U160BMP1 | 160 | 320 | 155 | 550 | 20 | R | 7.1 | |
| U160BLP1 | 160 | 320 | 170 | 550 | 20 | R | 7.4 | |
| U210BP1 | 210 | 280 | 155 | 450 | 20 | R | 7.9 | |
| U210BP | 210 | 320 | 170 | 550 | 20 | R | 9.4 | |
| U240BP1 | 240 | 280 | 170 | 450 | 24 | R | 8.3 | |
| U240BP | 240 | 330 | 170 | 550 | 24 | R | 9.7 | |
| U240BP2 | 240 | 380 | 170 | 635 | 24 | R | 11.5 | |
| U300BP1 | 300 | 380 | 195 | 635 | 24 | R | 13.2 | |
| U300BP | 300 | 380 | 195 | 690 | 24 | R | 13.9 |
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