An electric insulator is defined as which resist the flow of charge and make an internal electric charge of an insulator impossible to conduct an electric current under the influence of electric field. It needs a cross arm with a high length. Suspension insulators are cheaper in cost compared to pin type insulators for operating voltage above 50kv each unit of suspension insulators (insulator disc) is designed for comparatively low voltage (11kv) and can be increase the insulation strength by connecting these insulator disc modules in series.
Suspension Type Insulators (ST)
Application of suspension insulator is as follows:
At these voltages, the pin insulators become bulky, cumbersome and costly.
Hence for any operating voltage, a string of insulators can be used. The voltage rating is limited, i.e., up to 36kv. Applications of suspension type insulator: It needs more height for supporting structure and also to maintain similar ground permission of the current conductor.
Advantages and disadvantages of electric insulators.
Advantages of suspension type insulator suspension type insulator being economical as compared to pin type insulator for high voltage overhead transmission line each insulator disc is designed to operate for 11kv. The disadvantages of disc insulators include the following. The distance between the two conductors is greater. Each unit of suspension insulators is designed for comparatively low voltage.
The height of the transmission tower is higher.
This insulator reduces extreme tension on the line; The construction of the pin type insulator is simple and requires less maintenance. This article mainly talks about disadvantage of suspension type insulator and advantages of suspension type insulators. Core and link type insulator:
It should be used with the spindle.
It can be used vertically as well as horizontally. However, as will be demonstrated in this technical note,. The advantages of strain insulators include the following. Suspension insulators are cheaper in cost compared to pin type insulators.
Disadvantage of suspension type insulator.
These are used for low voltages upto 11kv; With an increase in the operating voltage, the insulation requirement will also increase. Fairly simple, and you can do it yourself. Disadvantages of suspension type insulator:
For example, for 66kv 6 number of discs are required.
It is a combination of both the above types of suspension insulators. Contents show voltage distribution over a suspension insulator string. Suspension insulator tensile strength is very large, you can put a number of connections clusters, increased compressive strength, in order to adapt to a variety of voltage levels of line use, generally available in sheet resistance line segments used, or dangling wires use, pin insulators only a single independent support wires, due to the pressure limit of the problems can only be. We can use them to perform at up to 115 kv in some configurations.
If the insulator is damaged, the stay or guy wires will not drop to the ground.
If the voltages are higher than 33 kv, it is common to use suspension type insulators. The higher voltage, more porcelain disc suspension insulator. In this article, we will be talking about voltage distribution and string efficiency of suspension insulator. It can be highly irritating to your skin and lungs if you come in direct contact with it.
Transmission system will have transmission voltages as high as 400kv and above voltage levels.
It is only used in the distribution line. These are designed with porcelain; We talked about advantages and disadvantages of each type of insulators. The advantages of suspension type insulators have:
Depending upon the working voltage, the desired number of discs can be connected in series.
(i) suspension type insulators are cheaper than pin type insulators for voltages beyond 33 kv. It tends to increase the spacing distance between the conductor. The disadvantages of suspension insulators are as follows: The advantages of suspension type insulators have:
Cheap price used in suspension insulator strings more flexibility to the line mechanical stresses due to wind and other factors are reduced in this suspension type insulator arrangement.
Each unit of suspension insulators (insulator disc) is designed for comparatively low voltage (11kv) and can be increase the insulation strength by connecting these insulator disc modules in series. Advantages of suspension insulators over pin type insulators. Suspension insulators are cheaper in cost compared to pin type insulators for operating voltage above 50kv. According to disadvantage of suspension type insulator, the engineers improve.
(ii) each unit or disc of suspension type insulator is designed for low voltage,usually 11 kv.
The pin of the insulator damaged the insulator thread. The string of this insulator is expensive compare with post and pin type insulators. Each suspension disc is designed for normal voltage rating 11kv (higher voltage rating 15kv), so by using different numbers of discs, a suspension string can be made suitable for any voltage level. In the previous article, we have discussed different types of insulators used in an overhead transmission line.
