Solid dielectrics used in power apparatus

What are the different types of dielectric materials?

Dielectric materials are split into types based on their state – solid, liquid, or gas. Each type has differing dielectric properties and, due to its state, different applications. In practice, most dielectric materials tend to be solid. They are used as insulation in capacitors, high voltage transformers and switches, overhead lines and cabling.

What are the different types of solid dielectrics used in practice?

They can be broadly classified into three groups: organic materials, inorganic materials and synthetic polymers. Some of Solid Dielectrics Used in Practice materials are listed in Table 4.2 below. The kind of paper normally employed for insulation purposes is a special variety known as tissue paper or Kraft paper.

How is dielectric strength achieved?

accomplished by a process similar to gas breakdown. Under normal industrial conditions, however, the same solid materials are found to exhibit a wide range of dielectric strength, depending upon the cond

What is a dielectric used for?

Dielectrics have been widely used in current electronic and electrical industries, in capacitors, insulation, sensors, actuators, sonars, gate dielectrics, high-frequency transducers, electro-optical devices, and microelectromechanical systems.

Are dielectric materials solid or liquid?

Dielectric materials can be in solid, liquid, or even gas state. Among them, solid dielectrics are the most commonly concerned.

What is a solid dielectric?

Solid dielectrics have more complex conduction mechanisms (such as thermal, tunnelling, hoping) governed by free electrons, holes and ions. Solid dielectrics can be either: Glasses: are amorphous materials which have no three dimensional atomic ordering over distances greater than 2 nm (atoms are tenths of nm across).