Tag Archives: polymer insulator

February 17, 2017

Routine tests of composite insulator with voltage greater than 1000V in IEC 61109 2008

Last time we talked about sample test of silicone composite insulator for AC system above 1KV, the IEC 61109:2008 has defined it clearly. Today let’s the coming section”routine test” of polymeric insulator in this IEC 61109: 13 Routine tests 13.1 Mechanical routine test Every insulator shall withstand, at ambient temperature, a tensile load at RTL […]

Insulator testing machines, Polymer insulators
February 15, 2017

Sample test method and rules of suspension and tension composite insulator in IEC 61109:2008

Sample test is a major method of insulator acceptance inspection for mass production. It is widely used by inspectors of insulators from manufacturers, power girds and electrical laboratories. Here we have definition, rules, test method and acceptance criteria of composite insulator of suspension type and tension type of international standard IEC 61109:2008 “spension and tension […]

Polymer insulators
February 8, 2017

Thermal-mechanical pre-test of composite insulator in IEC 61109:2008

Thermal-mechanical test is one of the most significant test for composite insulators. Here we have partial section of International Standard IEC 61109 2008: Insulators for Insulators for overhead lines – Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V – Definitions, test methods and acceptance criteria. IEC […]

Insulator testing machines
January 25, 2017

End fitting of railway insulator of Indian market

End fitting of railway insulator of Indian market The end fittings of silicone composite insulator for 25KV railway overhead traction have specific requirements. The end fittings shall be made of spheroidal graphite cast iron to grade: 400/15 of IS:1865-1991 or forged steel fittings to BS-970(Part-II). Approval of the type test of the insulator implies employment […]

Insulator testing machines, Overhead line fittings, Polymer insulators
June 22, 2015

Composite insulator (Polymeric insulator)

What is composite insulator? Composite insulator is also called polymeric insulator. It is developed after toughen glass insulator and ceramic insulators, whose main insulation structure is consist of a fiber glass core (rod) and silicon housing and sheds. One both side, 2 metallic fittings are installed on each side with crimping technics. These 2 metal […]

Polymer insulators