In the transmission lines , it plays an essential role in its operation. The designing of an insulator can be done using different materials like rubber, wood, plastic, mica, etc. The special materials used in the electrical system are glass, ceramic, PVC, steatite, polymer, etc.
But the most common material used in the insulator is porcelain and also special composition, steatite, glass materials are also used. This article discusses an overview of different types of insulators and its working.
These are classified into different types based on their rating which includes the following. If one disc used 11kv voltage then the remaining discs use 66kv voltage. This kind of insulator is used in distribution systems. The voltage capacity of this insulator is 11kV. It is designed with a high mechanical strength material. These are connected in vertical as well as horizontal positions. The construction of this insulator is simple and needs less maintenance as compared with other types.
This also called disc insulator and the designing of these insulators can be done using materials like porcelain or glass. This type of insulator is used in the cross arm of the pole, these insulators are used in voltage range up to 33kv beyond that it would become too bulky.
Pin type insulators are secured with steel or lead bolts onto transmission poles they are mostly used for straight running transmission lines. These type of insulators are used in high voltage range, these insulators are suspended from the cross arm and the line conductor is fastened to the cross arm. This insulator will suspend and support high voltage transmission lines.
It is cost-effective for high voltage transmission. This insulator will look similar to the suspension type but it can hold heavier physical loads.
Strain type insulators are used to relieve the tension of the line whenever there is a corner or sharp curve. There are several types of overhead line insulators. Most commonly used types are Pin type insulators Suspension type insulators Strain insulators Shackle insulators Pin type insulators Pin type insulators or pin insulators are popularly used in electric distribution systems up to 33 kV voltage level.
They are secured on the cross arms of the pole to carry power lines. There is a groove on the upper end of a pin insulator for housing the conductor. Conductor wire is passed through this groove and secured by binding with the same wire as of conductor. Wool, dry air, plastics, and polystyrene foam are all examples of good insulators. Materials that do not insulate well are called conductors. Your email address will not be published.
Save my name, email, and website in this browser for the next time I comment. Skip to content Insulators are useful to help separate electrical conductors when they come into physical contact.
Additional Questions Why are insulators used in overhead lines? Which type of insulator is used on kV transmission lines? Strain type insulator What type of insulator will be used if the direction of the transmission line is to be changed? Why are transmission lines not insulated? What are 3 types of insulators? What conductor is used for 11kv line?
Why are the insulator used? Why do we need insulating materials? Are overhead cables insulated? Why are overhead wire not insulated?
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