International Co.,Ltd. (TCI) specializes in manufacturing and exporting insulators, power fittings, bushings, cables and accessories for power transmission lines and substations. In addition to supplying high-quality products to our customers, we also provide superior technical assistance and services to meet their various needs.
Why Choose Us
Rich Experience
More than 70% of TCI's staff has bachelor degrees or higher. Many senior engineers and technicians are knowledgeable and experienced in the fields of high voltage, macromolecule research and machine manufacturing. We also have a well-established skilled workforce.
Professional Team
We has the complete management and technology teams, modern office facilities and business management software guaranteeing our clients secure operation solutions and sustainable business models.
Our Certifications
We implement the ISO 9001:2015 Quality Control and the ISO14001:2015 environmental management systems.
Our Market
TCI's products have been exported to 100 countries in the world. Our high quality products and services have helped us to obtain overseas market share and good reputation.
Advantages of Composite Station Post Insulator
Lightweight
They are much lighter, making them easier to handle and install.
01
High Strength
The fiberglass core provides high mechanical strength.
02
Excellent Insulation
Silicone rubber offers superior insulation performance and is hydrophobic, preventing water film formation.
03
Durability
They are resistant to impact, vandalism, and environmental factors like UV light and pollution.
04
Low Maintenance
Their design and materials reduce the need for regular cleaning or maintenance.
05
We offer the following Product Specifications
|
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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Materials of Post Insulator
Porcelain insulators
This is the most preferred material for insulators used in the overhead transmission lines. It is made from a combination of materials like clay, aluminum silicate, quartz and feldspar. It is then concealed with a smooth glaze that provides protection from dust, moisture and other impurities. It does not have any level of porosity which helps it to preserve its dielectric strength.It does not have any cracks or bubbles and this helps it to keep its insulation resistance high.
Glass insulators
This type of material has high resistance to electricity and has low factor for thermal expansion. It has higher dielectric strength compared to the porcelain due to its hardening process which is used for manufacturing them. It is also important as the insulating properties of glass cannot be affected by the external temperatures. This is because the tensile strength of the glass material prevents it from heating up in case of high temperatures.
Polymer insulators
This insulator is also known as composite insulator which is used in the overhead lines. It consists of an epoxy resin, fiberglass and a rod-shape core which is properly enclosed with sheds of the polymer. The rod is connected with galvanized steel on both ends to help it resist the electrical heat as well as the environmental heat. They are also lightweight and can be transported without breaking or getting damaged. They also have high tensile strength which makes them the best insulators for areas with high level of environmental pollution.
Structure of Polymer Station Post Insulator
Insulation Component
Made of silicone rubber polymer, offering outstanding resistance to pollution flashover and excellent hydrophobic properties.
Core Rod
Typically composed of glass fiber-reinforced resin (FRP), providing high mechanical strength.
End Fittings
Constructed from galvanized steel or aluminum alloy, ensuring secure attachment to power equipment.
Strength Ratings of Post Insulators
For transmission lines, Post insulators have different strength ratings. This rating standard for post insulators is used in all applications of bus and high-voltage applications.
The Standard Strength Post Insulators
They are designed to satisfy all the ANSI standards for electrical and mechanical properties for their particular voltage classes.
These types are the most typical type of post insulators that are easy to find in the market. The 22kV and 33kV post insulator are in this category.
High Strength Post Insulators
They should have extra mechanical strength. This type is suitable for switch-transmission lines and heavy-duty bus applications.
These porcelain post insulators are the same as the standard strength post insulators in terms of electrical strength.
Extra-high Strength Post Insulators
This type is mainly employed for transmission projects with extremely heavy mechanical loads. They can either pass the ANSI electrical and mechanical standards. We can name a 115 kV and the 150 kV post insulator in this group.
Packaging & Delivery
Certifications
FAQ
As one of the most professional composite station post insulator manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy customized composite station post insulator made in China here from our factory.
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