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The world of diagnostics has to keep up with the needs and possibilities today's world requires and offers. Everybody want the desired information in a cheap way and with minimum delay. The world of diagnostics is no different. Online diagnostic tools can cover these demands. Proper usage of tools like CBM (Condition Based Maintenance) can save us lots of money otherwise spend on unnecessary maintenance...
Demands on current electrical insulating systems have increasing trend toward tolerance to environmental safe conditions. This trend of course subsequently requires finding a new way in the field of application of materials compatible with the surrounding environment, e.g. easy biodegradable. This applies particularly for electrical insulating liquids used in distribution transformers since their...
Electrical insulation system is an important part of electrical equipment with high requirements — accuracy, quality, reliability and environmental protection. In power and distribution transformers is the most common electrical insulating system oil-paper system. The liquid component of the insulation system is used as a cooling and insulating medium as well. The most commonly used liquid insulating...
The world of diagnostics has to keep up with the needs and possibilities today's world requires and offers. Everyone want to have the information they desire at the moment and, of course, at minimal cost. The world of diagnostics is no different. One tool that offers that is the online diagnostics. It has many benefits that allow, with proper usage of tools like CBM (condition based maintenance),...
Until now not much attention was paid to behavior of insulating materials under different voltage stresses. For decades, the applied research was done generally under AC voltage. As power electronics was involved in drives and dominated instead of DC drives, new troubles with lifetime occurred. The great influence of higher harmonics does not affect operating parameters only but also it limits the...
Partial discharge measurement and subsequent analyses is one of important and capable test of electro-technological diagnostics. This test evaluates the properties of electrical insulation system of electrical machines and devices. There are a lot of partial discharge test methods based on physical or chemical detection of partial discharge. Described experiment consists of laboratory testing of partial...
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