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DCUG210B170/550T20R
Three-skirt structure: The insulator's main insulating body adopts a three-skirt structure, with a hat-shaped head and the first, second, and third skirts arranged axially downwards. All three skirts are inclined downwards and have drip edges. This design gives the insulating body a self-cleaning anti-fouling function, preventing flashover.
Keywords:
DCUG210B170/550T20R
Product Details
Structural Features
Three-skirt structure: The insulating body of the insulator adopts a three-skirt structure, with the cap-shaped head and the first, second, and third skirts arranged axially downwards. All three skirts are inclined downwards and have drip edges. This design gives the insulating body a self-cleaning function, preventing flashover. The maximum skirt extension of the first skirt is greater than that of the second skirt, and the maximum skirt extension of the second skirt is greater than that of the third skirt. This arrangement effectively reduces fouling on the second and third skirts, which are more difficult to clean, improving the self-cleaning effect of the insulator.
Umbrella rib design: The first skirt includes the first, second, and third umbrella ribs arranged from left to right. The three umbrella ribs are set downwards, which can further increase the creepage distance of the insulator, prevent creepage, and improve the performance against voltage surges. Several grooves are provided on the side of the third umbrella rib close to the axial center to increase the contact area with the adhesive, enhance the connection stability with the second skirt, and improve the mechanical strength.
Other structures: The lower skirt edge of the third skirt is an arc-shaped protrusion formed from the bottom upwards, and the upper skirt edge is an arc-shaped recess formed from the bottom upwards. Compared with the linear structure, this arrangement can increase the creepage distance of the insulator. Multiple rows of concave-convex textures are provided on the inner surface of the disc-shaped skirt opposite the steel foot to enhance the connection stability between the disc-shaped skirt and the steel foot; a semiconductor glaze is also provided on its surface to keep the surface of the disc-shaped skirt dry and make the surface voltage distribution more uniform, thereby maintaining a higher flashover voltage. In addition, it includes a steel cap and a steel foot. The steel cap is fitted on the cap-shaped head, and the steel foot is set in the accommodating groove. The insulator and the steel cap, and the insulator and the steel foot are bonded and fixed by an adhesive.
Performance Characteristics
Good antifouling performance: The three-umbrella structure design makes the underside smooth, without ridges, and open, with good self-cleaning performance in wind and rain, and a low natural fouling rate. In environments with high dust content, the advantages of the umbrella-shaped structure are even more pronounced, effectively reducing dust accumulation, improving self-cleaning, and enhancing the antifouling and anti-flashover performance of the insulator.
High insulation performance: Through the three-skirt structure, umbrella rib design, and the application of semiconductor glaze, the creepage distance of the insulator is greatly increased, which can improve the insulation performance of the insulator while ensuring mechanical strength, giving it a good withstand voltage level under pollution conditions. It can effectively prevent creepage and flashover during operation and adapt to various operating conditions, especially in heavily polluted, high-altitude, and dry desert areas.
Reliable mechanical strength: Using high-strength toughened glass and high-quality metal accessories, bonded together with cement adhesive, it has high mechanical strength. At the same time, through optimized structural design, such as the grooves of the third umbrella rib and the concave-convex textures of the disc-shaped skirt, the connection stability between the components is further enhanced, capable of withstanding various external forces such as mechanical tension, wind, and vibration in power transmission lines, ensuring that the insulator will not be damaged by mechanical stress during long-term operation.
Product Advantages Like other toughened glass insulators, it has the characteristic of self-destruction at zero value. When defects or aging inside the insulator cause the insulation performance to drop to a certain level, the glass will automatically break, allowing operation and maintenance personnel to observe and detect it on the ground or from a helicopter, eliminating the need for pole-by-pole inspection, reducing labor intensity, and saving line maintenance costs.
Application Scenarios Widely used in high-voltage overhead transmission lines of various voltage levels, especially in areas with harsh environmental conditions such as high dust, severe pollution, high altitude, and dry deserts, effectively improving the operational reliability of transmission lines and ensuring the safe and stable transmission of electricity.
Main Technical Parameters of Three-Umbrella Type (AC Type) Disc-type Suspension Toughened Glass Insulator (GB and IEC)
The Parameters of Three-shells Type ( AC ) Toughened Glass Suspension Insulator(GB & IEC)
Insulator Model | Drawing Number | Nominal Diameter D (mm) | Structure Height H(mm) | Nominal Creepage Distance L (mm) | Connection Mark (mm) | Rated Mechanical Breaking (kN) | Individual Tensile Load Test( kN) | Power Frequency Dry Withstand Voltage (kV) | Power Frequency Wet Withstand Voltage (kV) | Lightning Impulse Withstand Voltage (kV) | Impulse Overvoltage Breakdown Withstand Voltage (p.u.) | Minimum Power Withstand Voltage (kV) | Radio Interference 10kV 1MHz( μ V) | Visible Corona Voltage Foot/Cap(kV) | Power Frequency Arc Experiment | Insulator Single-piece weight (kg) |
| UG160B170/550T 20R | 12 | 330 | 170 | 550 | 20 | 160 | 80 | 85 | 50 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 8.0 |
| UG210B170/550T 20R | 12 | 330 | 170 | 550 | 20 | 210 | 105 | 85 | 50 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 10.2 |
| UG300B195/550T 24R | 12 | 330 | 195 | 550 | 24 | 300 | 150 | 85 | 50 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 11.3 |
| UG300B195/635T 24R | 12 | 380 | 195 | 635 | 24 | 300 | 150 | 100 | 60 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 15.3 |
| UG420B205/635T 28R | 12 | 400 | 205 | 635 | 28 | 420 | 210 | 110 | 65 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 16.5 |
| UG550B240/550T 32R | 12 | 400 | 240 | 635 | 32 | 550 | 275 | 110 | 65 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 17.5 |
Main technical parameters of three-umbrella type (DC type) - disc-type suspended toughened glass insulator (GB and IEC)
The Parameters of Three-shells Type ( DC ) Toughened Glass Suspension Insulator(GB &IEC)
Insulator Model | Drawing Number | Nominal Diameter D (mm) | Structure Height H(mm) | Nominal Creepage Distance L (mm) | Connection Mark (mm) | Rated Mechanical Breaking (kN) | Individual Tensile Load Test( kN) | DC Dry withstand Voltage (kV) | DC Wet withstand Voltage (kV) | Lightning Impulse Withstand Voltage (kV) | Impulse Overvoltage Breakdown Withstand Voltage (p.u.) | SF6 Breakdown Withstand voltage (KV) | Radio Interference 10kV 1MHz( μ V) | DC visible electric Corona Voltage Foot/Cap(kV) | Insulator Single-piece weight (kg) |
| DCUG160B170/550T20R | 12 | 330 | 170 | 550 | 20 | 160 | 80 | 140 | 55 | 140 | 2.8 | 210 | ≤50 | ≥50 | 8.9 |
| DCUG210B170/550T20R | 12 | 330 | 170 | 550 | 20 | 210 | 105 | 140 | 55 | 140 | 2.8 | 210 | ≤50 | ≥50 | 10.4 |
| DCUG300B195/550T24R | 12 | 330 | 195 | 550 | 24 | 300 | 150 | 150 | 60 | 140 | 2.8 | 225 | ≤50 | ≥50 | 11.3 |
| DCUG300B195/635T24R | 12 | 380 | 195 | 635 | 24 | 300 | 150 | 150 | 60 | 155 | 2.8 | 225 | ≤50 | ≥50 | 15.3 |
| DCUG420B205/635T28R | 12 | 400 | 205 | 635 | 28 | 420 | 210 | 150 | 65 | 155 | 2.8 | 225 | ≤50 | ≥50 | 17.5 |
| DCUG550B240/635T32R | 12 | 400 | 240 | 635 | 32 | 550 | 275 | 160 | 70 | 155 | 2.8 | 225 | ≤50 | ≥50 | 18.8 |
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