Kapton is a material developed by DuPont company. It is commonly used for insulation of electric and electronic devices. It offers excellent, physical, electrical, thermal and chemical resistant characteristics. It is a polyimide and it is usually available in a form of a homogeneo...

This paper researches the influence of the placement during the 3D printing process on the quality of the final product. The tensile tests were carried out on standard dog-bone specimens, which were printed both horizontally or vertically with three orientation angles 0°, 45°, 90°&...

The article presents a research focused on reliability testing of glued joints on conductive textile ribbons during the washing and drying cycles. For the experiment, the textile ribbons with electrically conductive silver coated copper threads were used. The SMD chip resistors were con...

Dielectric materials are an essential part of all electrical devices. One of the reasons, their properties are studied, is that they are most impacted by internal and external influences during the lifetime of the electrical device. Composite materials are commonly used as a dielec...

The aim of this article is to verify the possibility of using inductive coupling for the on-line measurement of partial discharges MV cables. At its principle, inductive coupling records partial discharges that cause current changes over this coupling only. This natural selectivity can&...

The breakdown phenomena and determination of dielectric strength is one of the essential topics in the field of insulating materials for high-voltage applications. In the case of basic thermosetting plastics, including epoxy resins, dielectric breakdown analysis has been performed many times,...

Natural oils with their price and environmentfriendly behaviour are more used these days like insulation fluids in transformers. There are often based on eg. rapeseed, soy, sunflower etc. oils. Compatibility between new materials used in transformers needs to be further discussed. Few p...

The current trend in the field of industrial diagnostics of the electrical appliances is to lower the maintenance costs by appropriate procedures of optimization of all processes from design, manufacturing, operation to decommissioning and recycling. Online monitoring of the current state of...

The paper proposes a design procedure of a current sensor. The winding design is analyzed regarding its impact on the operational characteristics and is evaluated for a preferred application. The paper also discusses the measurement results and given frequency characteristic and quality ...

This paper is focused on the analysis of selected dielectric parameters stability under the conditions of selected accelerated climatic aging. This stability is analyzed for glass fiber reinforced composites with different thermosetting matrix suitable for the production of electrical insulating ...

This paper deals with reliability of soldered / glued joints on electrically conductive textile ribbons during the electrical current ageing. The soldering was realized with tin-bismuth solder paste by hand soldering with hot air. The gluing was realized by UV curable non-conductive...

The paper summarizes the theoretical background of the accelerated aging test method of electrical insulating materials and its reliability by using the Arrhenius approach. Arrhenius equation presents generally accepted practice for assessing reliability, life-time, and degree of decomposition of a&#x...

Based on the experience of Atmos Chrast company - a leading Czech manufacturer of the air compressors, there was initiated a development of specialized data acquisition unit for on-site diagnostics of the air compressors. The unit allows systematic and long-term monitoring of operating&...

The paper deals with the analysis of a measurement process in the field of the variability in the measurement process. In the beginning it defines some variability sources in the measurement process, more precisely in the measurement process setting. These variability sources are t...

The main aim of this research is to present the effect of different nanostructured fillers (single metal oxides) on dielectric and mechanical properties. Silicon dioxide (SiO2), Magnesium oxide (MgO), Aluminium oxide (Al2O3), Zinc oxide (ZnO) and Titanium dioxide (TiO2) with average size...

Recent demands for thin and more resistant materials, that can be used in rotating machines, is causing the evolution of the new generations of materials. Conventional electroinsulating materials include a variety of composite materials, such as the combination of resin, mica and glass&...

This paper describes an initial experiment involving the action of an electric field on carbon nanotubes (CNTs). The spatial orientation of nanotubes is assumed due to the influence of electric field. An arrangement of nanotubes could provide better sensor properties of carbon nanotubes...

This publication is a follow-up to the study of an embroidered temperature sensor based on the hybrid resistive thread. It is necessary to be able to create a reliable electrical contact of the resistive thread by techniques which will be suitable for textile series production...

With the increasing use of Smart Textile products, there is currently a great deal of effort to increase the quality (mechanical, chemical and electrical) of electrical interconnection of hybrid conductive threads. This paper focuses on two techniques of the interconnection of hybrid co...

This article presents a research focused on a conformal coating used for printed circuit board (PCB) protection. Conformal coatings are an integral part of electronic assemblies to increase resistance to the effects of harmful environments and to improve reliability. An experiment for i...