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 […]
After end fittings of HV insulators have been crimped onto the core by crimping machine, the entire electrical insulators are supposed to be able to bear certain specific mechanical load as they will be used on overhead lines to support conductors and other line fittings. Here let’s see how international standard IEC 61109 defines such […]
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 […]
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 […]
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 universal testing machine? Universal testing machine (UTM) is a testing machine specifically designed for multi-function tests. It is applied on tests of metal, non-metal, composite material, whose testing function include but not limit to common mechanical tests like tension, compression, bending, cutting, tearing and etc. UTM is also can be used on tests of […]
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 […]
This polymer housing tightness testing machie, also known as boling test machine is designed and developed for composite insulator (also called polymeric insulator). In international electrical standard (IEC61109 insulators for overhead lines – composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1000V – definitions,test methods and acceptance criteria) for […]
What is “Insulator bending & torsion resistance testing Machine”? The bending torsion testing machine is mainly applicable in the mechanical bending (cantilever) and torsion test for post type insulators and pin type insulators with material of porcelain and polymer. As it is required in IEC standard and ANSI standard, porcelain post insulators for subsation and overhead […]
