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April 1, 2018

Contune Intl Corp will attend IEEE PES T&D Conference and Exposition 2018 in Denver USA

Contune International Corporation and her collaborating factory will attend IEEE PES T&D Conference and Exposition in Danver,Colorado,USA from 17th to 19th April. Our booth no.:907 By our manufacturer name: Zibo Qianheng Automation & Engineering Co.,ltd Here we have our staff to introduce our testing machines and production machines of composite insulator, ceramic insulator and glass […]

Insulator producting machine, Insulator testing machines
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
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
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