At Contune International Co., Ltd, we take pride in our commitment to delivering cutting-edge testing equipment that drives innovation and quality in various industries worldwide. Recently, we achieved another significant milestone by successfully shipping a state-of-the-art thermal-mechanical testing machine to Mexico. This advanced piece of equipment is set to play a pivotal role in enhancing […]
The existing IEC doesn’t succficiently reveal the potential adhesion problems in polymeric line insulators.
Algeria, a country covering 2,381,741 square km in Africa, and the largest nation in Africa too, is seeking the opportunity of development in the electricity industry. With the rapid growth of demand for electricity, some merchants smell the potential fortune in self-supplying electrical components, such as high voltage polymeric insulators. In recent years, more and […]
With the world’s recovery from COVID-19 epidemic situation, manufacturers of composite insulators become active again. The first batch of upgraded polymer insulator crimping machines is about to go overseas to India Hyderabad. In the first half of this year, we have been dedicated to R&D of new appearance and optimized function of current testing machines […]
Different housings are available these days for the external insulation of EHV and UHV bushings. These include: porcelain, which may or may not also be coated with RTV silicone material to improve pollution performance; hybrid housings consisting of a porcelain core with a polymeric housing; and a composite housing based on an internal FRP tube […]
The thermal-mechanical test is one of the most significant tests for composite insulators. Here we have a partial section of International Standard IEC 61109 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. IEC […]
What is a composite insulator? The composite insulator is also called the polymeric insulator. It is developed after toughened glass insulator and ceramic insulators, whose main insulation structure is consists of a fiberglass core (rod) and silicon housing and sheds. One both sides, 2 metallic fittings are installed on each side with crimping technics. These […]
Scope and object This International Standard applies to composite suspension/tension insulators consisting of a load-bearing cylindrical insulating solid core consisting of fibers – usually glass – in a resin-based 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 […]
Africa has been dreaming about establishing its own factory of high voltage polymeric insulators since long ago, and this year their dream come true. The first manufacturer of 33kV silicon rubber insulator (polymeric insulator) is now moving its pace steadily to real production. This is not only a start but also a milestone for Tanzanian […]
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 […]