Insulator Makes Life Better 
Current position: Orient > model >

Type of insulator used in transmission line

Type of insulator used in transmission line is various. Transmission line insulators are devices used to contain, separate or support electrical conductors on high voltage electricity supply networks.

Type of insulator used in transmission line

What are main types of insulator used in transmission line?
Pin insulators
Suspension insulator
Post insulators
Line post insulators
Strain type insulator
Shackle insulator
Spool insulator


Type of insulator used in transmission line is made of polymers, glass and porcelain--each with different densities, tensile strengths and performing properties in adverse conditions.

For each type of insulators, there have different features. For the pin type insulator is secured to the cross-arm on the pole and used for transmission and distribution of electric power at voltages upto 33 kV. Beyond operating voltage of 33 kV, the pin type insulators become too bulky and hence uneconomical.

For high voltages (>33 kV), it is a usual practice to use suspension type insulators which consist of a number of porcelain discs connected in series by metal links in the form of a string.

When there is a dead end of the line or there is corner or sharp curve, the line is subjected to greater tension. In order to relieve the line of excessive tension, strain insulators are used.

Relative Articles:
Pole line hardware
Polymeric station post insulators
11kv disc insulators specification
Pole stay wire

About Us - Composite insulator manufacturer
More than 30 years experience in power industry since 1978 as a composite insulator manufacturer in China, advanced manufacturing process, strict quality control test system, ISO certificated, excellent communication, considerate services, enable us to be a leading composite insulator manufacturer of composite insulator and polymer insulator.
Our Advantage
ISO 9001 certificate
5000h Aging Type Test Report
Considerate after-sale services
Patent Product and New Technique
Instant Response for Each Requirement

©2014 Zhengzhou Orient Power Co., Ltd All rights reserved. Tel/Fax: +86 371 86097078 
sales@composite-insulator.com  Orient is a composite insulator manufacturer for products of composite insulator and polymer insulator