Porcelain and ceramic insulators
The main features of our porcelain and ceramic insulators are:
Our high, medium, and low voltage insulators are nowadays demanded by the following markets:
Porcelain Insulators Catalog
Power lines and other electrified wiring transmission of high-voltage electrical energy along suspended cables. While the wires themselves generally do not contain insulation, certain points along the electrified wiring require insulation. For example, insulators are required where live electrical cables meet the poles supporting them and when placed in buildings. Since insulators do not respond to electrical fields, they can go a long way in preventing fires and electrical failures.
Porcelain insulators typically contain high concentrations of some minerals such as alumina or clay. The combination of porcelain with other minerals allows electricity to pass through without reacting with nearby electrical conductors. This not only ensures greater safety, but also allows electricity to pass through without losing any of its power charge. Since porcelain does not conduct electricity, especially when combined with other non-conductive materials, it is the ideal material for insulators.
Porcelain insulators for railway poles have good chemical and thermal stability. It almost does not age or deteriorate and has good electrical and mechanical properties. New varieties such as large diameter, large tonnage L00~400KN, common-type and bell-type umbrella are now being used.
- Compared to polymers, the electrical resistance of porcelain is much higher: 25+ kV/mm vs. 20 kV/mm in polymers. Porcelain insulators in dry state as an electrical insulating material have better electrical properties than polymers. The electrical type tests show better results, giving longer useful life in terms of loads generated by electrical loads and other temporary electrical phenomena.
- Porcelain insulators have proven to have a higher resistance to surface degradation, they do not degrade or char during loads; the conductive path is created very slowly compared to the surface of a composite insulator. High thermal resistance, ceramic withstands temperatures up to 1000 °C: the surface is resistant to any type of degradation within the temperature range. The surface is stable against the effects of UV radiation.
Porcelain insulators have a wide field of application: contactors, disconnectors, transformers equipment, capacitors, grommets also with end surface, atypical insulators (filters). Characteristics of high plasticity during production, precision grinding possibilities, as well as carburizing and bonding with excellent mechanical properties allow a wide range of shapes to be created and used for any type of application.
Ecological. When it is time to remove them, porcelain insulators are not hazardous waste. They are made from natural materials through simple mixing and curing; they can be stored in landfills with other waste and, additionally, they can serve as recycled material to produce ceramics and other similar products.
- Porcelain insulators are perfect for areas experiencing extreme cold / heat environmental changes. They are suitable for environments with dust, salt and high humidity, or a combination of all of these. The highly glazed surface provides the product with better self-cleaning properties in heavily polluted areas. The product shows stable results in loads and short circuits in this type of environment; they are highly resistant to corrosion in acidic and caustic environments.
- The ceramic material offers a very high mechanical resistance under pressure and hardness. The porcelain insulator does not deform unless an external force is applied. A long service life of up to 40 years can be guaranteed. Therefore, many users have provided long-term operating references in various applications. The design is modified to fit the environment.
- The product offers many shapes during production. The enamel uses a wide range of colours according to clients’ needs, for example, grey or sky blue.
- Porcelain insulators do not present defects in the ceramic-metal interface. The combination of the ceramic insulator with cast iron or aluminium structures using traditional cementing agents is resistant to transition phenomena during electric discharge.
- The ceramic material is resistant to rodents, termites, birds, and other animals capable of jeopardising the integrity of the polymers. The surface of the insulator is highly enamelled and hard, which makes the product unappealing to animals.
- Porcelain insulators are attractive and have a timeless design.