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Natural oils are divided into vegetable and mineral oils. Compared with vegetable oils, the mineral oils show better dielectric properties, however, they are rather dangerous for the living environment and their flammability is higher. The vegetable oils are composed of natural ester molecules with a triacylglycerol structure. The mineral oils are a mixture of hydrocarbons produced from crude oil...
The aim of this paper is to describe cleaning processes of rotating machines in detail and to analyze the effect of chemical cleaning detergents on condition of the insulation system of the electrical rotating machines. The study emphasizes the importance of cleaning procedure as a part of the maintenance of electrical rotating machines. Three chemical solutions which contain different types of isoalkanes...
There are only a few materials that are promising composites. For decades high-voltage electrical insulation technology used ternary insulation systems; usually based on modified epoxy resins and reconstructed mica. Adding additional components into existing systems, it is possible to influence their properties. However, the disadvantage is an inhomogeneous composite structure that emerges from the...
This paper focused on modified resin that contain epoxy matrix on base improving the thermal conductive, a new composite system was designed by applying new phase represented by the nano or microparticles of silica. In this paper, low quantities bisphenol A (DGEBA) with diamine crosslinker (Laromin C260). In order to assess the challenge of improving the electrical properties while not changing or...
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