L’Afrique rêve depuis longtemps de créer sa propre usine d’isolateurs polymères haute tension et cette année, leur rêve devient réalité. Le premier fabricant d’isolateur en caoutchouc de silicium 33kV (isolant polymère) passe désormais régulièrement à une production réelle. Ce n’est pas seulement un début, mais aussi une étape importante pour le peuple tanzanien. Étant un […]
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 […]
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 […]
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 […]
Embout d’extrémité d’isolateur ferroviaire du marché indien Les raccords d’extrémité de l’isolateur composite en silicone pour la traction aérienne de 25KV ferroviaires ont des exigences spécifiques. Les raccords d’extrémité doivent être en fonte à graphite sphéroïdal de grade: 400/15 de IS: 1865-1991 ou raccords en acier forgé selon BS-970 (partie II). L’approbation de l’essai de […]
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 […]