24kv-27kv 10kn Polymeric Pin Insulator/Line Post Insulator

In recent years, the application field of polymer pin insulator, Polymer insulator, 25kV Composite Post Insulators has been continuously expanded and the demand for the development of various new series has continued to rise. We put the quality concept throughout every minute link from design and development to after-sales service. We listen to the requirements and needs of every customer. We are strict with ourselves, lenient with others, diligent in our work, faithful to our duties, not to blame others, not to shirk responsibility, not to distort the facts, not to deceive customers, is the basic principle that all our employees should follow.

Improvements in electrode shape

The average breakdown field strength of uniform electric field and slightly inhomogeneous electric field gap is much higher than that of extremely inhomogeneous electric field gap. Generally speaking, the more uniform the electric field distribution, the higher the average breakdown field strength. Therefore, the electrode shape can be improved and the electrode curvature radius can be increased to improve the electric field distribution and increase the breakdown voltage of the gap. At the same time, the electrode surface should try to avoid burrs, edges, etc. to eliminate the phenomenon of local enhancement of the electric field. If an extremely non-uniform electric field is unavoidable, a symmetrical electric field (rod-rod type) should be used whenever possible.

Even if the electric field is extremely uneven, in many cases, in order to avoid strong corona discharge under the operating voltage, the electrode curvature radius must be increased.

Figure 2-25 shows some methods of changing the shape of the electrode to adjust the electric field. These methods can be summarized as follows: 

(1) Increase the radius of curvature of the electrode: For example, add a spherical shield to the end of the transformer bushing (see Figure 2-25(a)), use expanded diameter wires (the cross-section is the same, the radius is increased, see figure 2-25(b)), etc., use the method of increasing the electrode curvature radius to reduce the surface field strength.

(2) Improve the electrode edge: The electrode edge should be made into an arc, or try to make it as close as possible to an equipotential surface (see Figure 2-25(c)) to eliminate the edge effect.

(3) Make the electrode have the best shape; such as adding a metal flat ball to the high-voltage lead through the wall, and the edge of the wall hole is made into a rotating body similar to a vertical chain line (see Figure 2-25(d)), so as to improve its electric field distribution.

Adjusting the electric field and reducing the local excessively high field strength are effective measures to improve the electric strength not only for the gas gap but also for other insulation structures. For different insulation structures, in addition to improving the electrode shape, other methods of adjusting the electric field can also be used.

solid insulating covering

In a slightly uneven electric field, covering the surface of the high-field-strength electrode with a solid paper insulating layer can also increase the gap breakdown voltage, and the covering layer has a significant effect on increasing the air gap breakdown voltage, but covering the counter electrode with an insulating layer , to improve the air gap breakdown voltage research needs to be further in-depth.

Insulator designed mainly for flexural loads (bending) but also tension and compression, thus having combined loading capability. Normally utilized as a single unit can also be a double insulator assembly. Composite materials are most suitable for the application on compact lines and retrofitting due to their flexibility, overloads absorption capacity and reduced weight. We have thousands of pieces line post from 33kV to 362kV worked on lines all over the world, and there is no single accidents happens. 

We have our own silicone rubber workshop and lab. Each batch of rubber shall be tested and we have our own formula which makes our insulator tracking and earsion performance stable and good. Below is the key parameter of our rubber. 

Our company with strong strength, reasonable price, good service and a number of enterprises to establish a long-term partnership. With high quality products and perfect after-sales service, we have won the consistent reputation of customers all over the country. We sincerely welcome customers from home and abroad to visit, investigate and discuss business cooperation.

Our destination is 'You come here with difficulty and we supply you with a smile to take away' for 24kv-27kv 10kn Polymeric Pin Insulator/Line Post Insulator. Our company is customer-oriented and strive to meet customer requirements with satisfactory quality, innovative technology, complete varieties, reasonable suggestions and services. We'll satisfy you with our qualified service!

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