Tag Archives: composite insulator

February 13, 2018

1.Scope and object of IEC61109:2008 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

Scope and object This International Standard applies to composite suspension/tension insulators consisting of a load-bearing cylindrical insulating solid core consisting of fibres – usually glass – in a resinbased matrix, a housing (outside the insulating core) made of polymeric material and end fittings permanently attached to the insulating core. Composite insulators covered by this standard are intended […]

Electrical insulators, Polymer insulators
February 12, 2018

Introduction of IEC61109 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

Composite insulators consist of an insulating core, bearing the mechanical load protected by a polymeric housing, the load being transmitted to the core by end fittings. Despite these common features, the materials used and the construction details employed by different manufacturers may be quite different. Some tests have been grouped together as “Design tests”, to be performed only […]

Electrical insulators, Polymer insulators
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 13, 2017

Damage limit proof test and test of the tightness of the interface between end fittings and insulator housing in IEC61109:2008

Damage limit proof test and test of the tightness of the interface between end fittings and insulator housing,these two tests are two of the most important test in inspection process of composite insulator. Here is how international standard IEC 61109:2008 “Suspension and tension insulators for AC system with a nominal voltage greater than 1000V” defines these 2 […]

Insulator testing machines, 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 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
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