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 Trihydrate (ATH) is used as a filler. The filler is properly mixed with silicone compounds to ensure uniform distribution. The thickness of the sheath shall be a minimum of 3 […]
As electrical industry grows with bigger demands and supplies, electrical high voltage insulators has entered a new stage of production furious. More and more factories in India, big or small, has smelled the chance and are eager to grasp the profit. When we talk about power construction, we feel difficult to ignore an important electrical […]
The creation of composite insulator started before the 1960s. This new insulator was firstly applied in America and then in France and Germany soon afterwards. It was quite slow for user to accept insulator with silicone rubber material in the beginning as most technical innovation would have some key problems to solve in the history. […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
