An insulator is an electronic device that gives support to the poles and overhead line conductors. Its main purpose is to prevent the current flow toward the Earth. In transmission lines, it has an integral role to play. The manufacturers design the insulator using rubber, mica, wood or even plastic. They use special materials like glass, PVC, ceramic, polymer, steatite etc. However, the common material used is porcelain. You can buy them from the reputable Conical Support Insulators Manufacturer in India.
Depending on the voltage consideration, there are different varieties of insulators available. In this article, we can take a look at some of these types.
Different Types of Insulator
- Pin insulator
It is a type of overhead insulator; however, it is utilised commonly in power networks that go up to 33kv. You can see one pin, two or three-pin type insulators depending on the voltage of the application. The leakage happens through the surface. Hence it is recommended to increase the vertical length of the insulator surface area. Pin type insulators are secured with lead bolts or steel and put in straight running transmission lines. Beyond 33kv, the insulators are uneconomical.
- Suspension Insulator
This type of insulator contains porcelain discs that are connected via metal links to form strings. It is embedded in high voltage towers. The experts will suspend the conductor at the bottom end of the string while securing the other end to the tower cross arm. Each unit of this disc is designed for low voltage use, like 11 kV. The number of discs is connected appropriately for proper operations. The suspension insulators are suitable for steel towers. It also offers partial protection against lighting.
- Strain insulators
The manufacturers design the strain insulator to handle various mechanical stresses at different angles whenever there is a directional change in the lines. High voltage lines with a longer span and greater loading allow the operatives to arrange the insulator strings into a horizontal position. In those instances where a single string is not sufficient for high load-bearing capacity, they deploy two or more strings in parallel. This enables high conductor tension.
Meet the Experts
The conical insulators are made from porcelain or ceramic. The manufacturers design them accurately to yield maximised performance. They are utilised mainly for electrostatic precipitation, and you can get them in a customised finish.
You can buy conical support insulators from Reliance Potteries. They are a well-established exporter and manufacturer of high tension porcelain insulators. They follow an integrated approach toward quality management. Their advanced testing methods comply with international customer-specific standards.