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
February 4, 2017

Insulators tested in vertical position and horizontal position

As we know,high voltage insulators shall subject to mechanical failing load test, and when we mention “test in vertical position and horizontal position”, this more refer to suspension insulator, tension insulator, post insulator and pin insulator. The suspension and tension insulator are normally tested in horizontal direction, as they are long in shape, with length […]

Electrical insulators, Insulator testing machines, Polymer insulators
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
January 22, 2017

Test of sheds and sheath material of composite insulator

Composite insulator’s shed and sheath are be made of high temperature vulcanizing (HTV) type silicone rubber, having silicone polymer content by weight 30% minimum. Alumina Tri hydrate (ATH) is used as filler. The filler is properly mixed with silicone compound to ensure the uniform distribution. Thickness of sheath shall be minimum 3 mm and shall […]

Insulator testing machines, Polymer insulators
March 11, 2016

Mechanical failing load tester for insulator(Cantilever & Tension)

Name:Mechanical failing load tester for insulator (Cantilever & Tension) Other name: Cantilever/Tension failing load tester for ceramic/polymeric/glass insulator Introduction: This Mechanical failing load tester is designed to do type test and sample test on high voltage electrical insulators,  testing their mechanical performance of cantilever failing load and tensile failing load. It is also called bending testing machine sometimes for […]

Insulator testing machines
June 23, 2015

Crimping machine for composite insulator flange

What is crimping machine? Crimping machine is a kind of machine used to crimp the bottom flange of high voltage insulators in insulator production. With high pressure from hydraulic power force, crimping machine press the metallic flange from all direction and make the metal fittings (flange) well attach the core of composite insulators. Crimping machine is also […]

Insulator producting machine
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
April 9, 2015

FRP sanding machine of composite insulator

THE INSULATOR ROD SANDING MACHINE (FRP SANDING EUQIPMENT FOR PRODUCTION OF INSULATORS) GENERAL INTRODUCTION Like its name, insulator rod sanding/grinding machine is designed and developed for electrical polymeric long rod insulators and pin type insulators. These 2 types of electrical polymeric insulator (with another name composite insulator) is made of  a fiber glass core in […]

Insulator producting machine, Insulator testing machines
March 23, 2015

Porosity testing machine for porcelain insulator

What is porosity testing machine? The porcelain shell porosity testing machine is mainly applied for testing the porosity of the porcelain insulator shell. Porcelain insulator tester, porcelain insulator testing machine, ceramic insulator testing machine,ceramic insulator tester,disc insulator tester Why do we need a porcelain porosity testing machine? To ensure the desired performance of an electrical […]

Insulator testing machines