Home > Products > Electrical Polymer Insulator > Polymer Station Post Insulator > Station Post Composite Insulator
Product Description
Composite insulator is a special insulation control element that plays an important role in overhead transmission lines. There are many types of polymer insulators.
Composite insulators are also called synthetic insulators, non-ceramic insulators, polymer insulators, rubber insulators, etc. The main structure is generally composed of umbrella skirt, glass fiber reinforced plastic mandrel and end fittings. Umbrella skirts are generally made of organic synthetic materials, such as ethylene-propylene rubber, high temperature vulcanized silicone rubber, etc.; glass fiber reinforced plastic mandrels are generally reinforced with glass fiber, with oxidized resin as the matrix; end fittings are usually carbon steel or coated with hot zinc aluminum carbon structural steel.
Composite insulators can be divided into: composite suspension insulators, line column composite insulators, pin composite insulators, column composite insulators, composite railway insulators, composite hollow insulators.
Composite insulators are small in size, light in weight, light in structure, easy to transport, easy to install, and easy to maintain.
The composite insulator has good anti-fouling property and strong anti-fouling flashover voltage. Its wet withstand voltage and pollution withstand voltage are 2 to 2.5 times that of porcelain insulators with the same creepage distance. No need for cleaning and safe operation in heavily polluted areas.
Polymer insulators have superior electrical properties and high mechanical strength. The polymer insulator has good tensile and flexural strength, which is 2 times higher than ordinary steel and 8-10 times higher than high-strength porcelain materials, which effectively improves the reliability of safe operation.
It has good waterproof performance. Its overall structure protects the internal insulation from moisture. It does not require preventive insulation monitoring testing or cleaning, reducing routine maintenance efforts.
Polymer insulators have good sealing performance and high resistance to electrical corrosion.
Polymer insulators have high impact resistance and impact resistance, good brittleness resistance and creep resistance.
Polymer insulators have high flexural strength and high torsional strength. It enables them to withstand internal pressure. It can be used in combination with porcelain insulators and glass insulators.
We offer a wide range of composite insulators, please contact us for more details on composite insulators.
● Color: Red, Brown, Gray, or Customer's requirement;
● Applicable Standard: IEC, GB, BS, ANSI, AS, or Customer's requirement;
● Excellent mechanical and electrical properties,
●Hydrophobic properties of the silicone rubber insulation cover ensure high resistance to dirt and self-cleaning properties;
●Lower risk of mechanical damage during transport, assembly and operation;
●Resistance to UV radiation, ozone, and moisture;
●Shock and impact resistance – suitable for use in areas of seismic activity;
●Capable of carrying specific torsional loads.
|
Rated System Voltage (kV) |
Section Length (mm) |
Arcing Distance (mm) |
Creepage Distance (mm) |
Specific Creepage Distance |
Specified Cantilever Load (kN) |
Specified torsional Load (kN·m) |
Specified Tensile Load (kN) |
Lightning Impulse Withstand Voltage (kV) |
Power Frequency Withstand Voltage (kV) |
|
|
Dry |
Wet |
|||||||||
|
35 |
560 |
≥400 |
1260(e)/1020(d) |
53.7(e)/43.3(d) |
6 |
4 |
10 |
≥200 |
100 |
80 |
|
35 |
560 |
≥400 |
1260(e)/1020(d) |
53.7(e)/43.3(d) |
12.5 |
6 |
10 |
≥200 |
100 |
80 |
|
66 |
770 |
≥600 |
2250(e)/1820(d) |
53.7(e)/43.3(d) |
6 |
4 |
10 |
≥325 |
175 |
140 |
|
66 |
770 |
≥600 |
2250(e)/1820(d) |
53.7(e)/43.3(d) |
12.5 |
6 |
10 |
≥325 |
175 |
140 |
|
110 |
1150 |
≥900 |
3910(e)/3150(d) |
53.7(e)/43.3(d) |
8 |
4 |
10 |
≥450 |
250 |
200 |
|
220 |
2300 |
≥1900 |
7820(e)/6300(d) |
53.7(e)/43.3(d) |
8 |
4 |
10 |
≥950 |
490 |
395 |
|
220 |
2300 |
≥1900 |
7820(e)/6300(d) |
53.7(e)/43.3(d) |
12.5 |
6 |
10 |
≥950 |
490 |
395 |
|
220 |
2300 |
≥1900 |
7820(e)/6300(d) |
53.7(e)/43.3(d) |
16 |
6 |
10 |
≥950 |
490 |
395 |
|
330 |
3650 |
≥3000 |
11260(e)/9080(d) |
53.7(e)/43.3(d) |
10 |
4 |
10 |
≥1175 |
635 |
510 |
|
750 |
7200 |
≥6500 |
24800(e)/20000(d) |
53.7(e)/43.3(d) |
12.5 |
6 |
10 |
≥2100 |
1200 |
960 |
|
Order Information: ①Voltage grade; ②Specified mechanical load; ③Creepage distance; ④Power frequency withstand voltage; ⑤Lightning impulse withstand voltage; ⑥Insulation distance; ⑦Coupling type Ps. Different design could be supplied as customer requirements |
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