History of the Development of Composite Insulators
Composite insulators are made of silicone rubber material composite high voltage insulators. The main rod and cross arm style, 35KV/110KV / 220KV line as a drape and resistant sheets bearing insulation products, is also used for 10KV line insulator product. Different types of composite insulators in different purpose use, the silica composite insulators for substations, with good hydrophobicity, aging resistance, resistance to tracking and resistance to erosion resistance, high tensile strength and flexural strength. Its high mechanical strength, good impact resistance, shock-proof and anti-brittle fracture performance, light weight, easy installation and maintenance, its upper and lower ends of the installation size porcelain post insulators mounting dimensions can be used interchangeably.
Advantages of Composite Insulators
1. Superior mechanical properties: the mandrel is made of epoxy glass fiber, its tensile strength was 1.5 times that of ordinary steel, high-strength ceramic 3 to 4 times axial tension is particularly strong and has a strong vibration absorption capacity, high performance of seismic damping porcelain insulators, 1/7 to 1/10.
2. Stain-resistant flash performance: composite insulator is hydrophobic, synthetic insulators umbrella in the rain when the corrugated surface does not wet the water film is formed, was the drops of water like dripping, is not easy to have a conductive channel, the higher its pollution flashover voltage for same voltage levels porcelain insulator 3 times.
3. Galvanic corrosion resistance is excellent: the surface of the insulator leakage flashover formation irreversibility deterioration tracking phenomenon, the general standard of not less than 4.5 (ie 4.5kV) composite insulators for 6 to 7.
4. Anti-aging properties: after decades Practice detection of composite insulators in addition to the color darken slightly and the dielectric constant and dielectric loss angle slightly increased, the surface wettability and electrical erosion resistance no change of tracking sex, indicating a good anti-aging properties.
5. Structural stability: General porcelain suspension insulator assembly structure within the plastic, galvanic corrosion, insulation resistance of the low value of zero will run, and the composite insulators Cover assembly structure, its heart is a solid rod of insulating material, does not exist deterioration of aggregate breakdown, zero value does not appear insulators.
6. Line operating efficiency: synthetic insulators weatherproof self-cleaning, without producing zero value insulator, so the cleaning and inspection can be changed to once every four to five years, reducing maintenance outage time.
7. Light weight: with the insulator own light weight transportation, construction jobs, which can greatly reduce the labor intensity of the staff.
www.compositeinsulators.net. Our company is a high-tech enterprise, which specializes in the manufacturing of composite insulators for electric power and electrical railways.
This article is come from:http://www.mobilesaccessories.net/index.php/know-about-composite-insulator.htm
Showing posts with label high voltage insulators. Show all posts
Showing posts with label high voltage insulators. Show all posts
Friday, February 1, 2013
Wednesday, November 7, 2012
What is an Insulator?
What is an Insulator?
In daily life, we can see many insulators. However, do you know what is insulator? The insulator is substance with not good conduction current and it is also called the dielectric guide. Their resistivity is high. There is no absolute boundary. Insulator under certain conditions can be transformed into the conductor. Either the solid or liquid, internal if there is a freely moving electrons or ions, then he would be conducting. No free moving charge, under certain conditions, it can produce conductive particles, so it can also be a conductor.
Different Kinds of Insulators
After you get the meaning of insulator, maybe you should know how to distinguish different kinds of insulators. There are many kinds of insulators, including power line insulators. There are many kinds of solid insulators, such as plastic, rubber, glass and ceramics; liquid such as various natural mineral oil, silicone oil, three chlorine biphenyl; gas such as air, carbon dioxide, sulfur hexafluoride. Normally, gas is a good insulator. In some special conditions, it will be converted into conductor insulator.
The Advantages of High Voltage Insulators
High voltage insulator under certain conditions such as heating, high pressure under the influence translates into the conductor. The high voltage insulator is also not conductive object. If the insulation material applied on both ends of the voltage, the material will appear weak current. The insulating material is usually only a trace of free electrons without breakdown before participating in the conductivity of charged particles is dominated by thermal motion and dissociation from intrinsic ion and impurity. Insulator electrical properties are reflected in the conductivity, polarization, loss and the breakdown process. An insulator is material that can prevent heat or electric flow. The high voltage insulators can be also used in this principle. Electrical insulator relative material is conductive and semiconductive, and they can take charge of patency of the flow (Note: in the strict sense, the semiconductor is an insulator, at low temperatures because it can stop the flow of electric charge, except in semiconductor doped with other atoms, which can release the excess charge to carry current). The term electrical insulators and dielectrics has the same meaning, but the two terms are used in different fields. A complete sense of heat insulator, according to the second law of thermodynamics is not possible. However, there are some material (such as silicon dioxide) is very close to the real electrical insulator. A larger class of materials for home and office wiring are perfect with no safety hidden trouble, and the efficiency is very high.
This article is come from: http://www.compositeinsulators.net/News/49.htm
In daily life, we can see many insulators. However, do you know what is insulator? The insulator is substance with not good conduction current and it is also called the dielectric guide. Their resistivity is high. There is no absolute boundary. Insulator under certain conditions can be transformed into the conductor. Either the solid or liquid, internal if there is a freely moving electrons or ions, then he would be conducting. No free moving charge, under certain conditions, it can produce conductive particles, so it can also be a conductor.
Different Kinds of Insulators
After you get the meaning of insulator, maybe you should know how to distinguish different kinds of insulators. There are many kinds of insulators, including power line insulators. There are many kinds of solid insulators, such as plastic, rubber, glass and ceramics; liquid such as various natural mineral oil, silicone oil, three chlorine biphenyl; gas such as air, carbon dioxide, sulfur hexafluoride. Normally, gas is a good insulator. In some special conditions, it will be converted into conductor insulator.
The Advantages of High Voltage Insulators
High voltage insulator under certain conditions such as heating, high pressure under the influence translates into the conductor. The high voltage insulator is also not conductive object. If the insulation material applied on both ends of the voltage, the material will appear weak current. The insulating material is usually only a trace of free electrons without breakdown before participating in the conductivity of charged particles is dominated by thermal motion and dissociation from intrinsic ion and impurity. Insulator electrical properties are reflected in the conductivity, polarization, loss and the breakdown process. An insulator is material that can prevent heat or electric flow. The high voltage insulators can be also used in this principle. Electrical insulator relative material is conductive and semiconductive, and they can take charge of patency of the flow (Note: in the strict sense, the semiconductor is an insulator, at low temperatures because it can stop the flow of electric charge, except in semiconductor doped with other atoms, which can release the excess charge to carry current). The term electrical insulators and dielectrics has the same meaning, but the two terms are used in different fields. A complete sense of heat insulator, according to the second law of thermodynamics is not possible. However, there are some material (such as silicon dioxide) is very close to the real electrical insulator. A larger class of materials for home and office wiring are perfect with no safety hidden trouble, and the efficiency is very high.
This article is come from: http://www.compositeinsulators.net/News/49.htm
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