ABSTRACT
The increasing demands on the operability, reliability, and quality of all electrical equipment and the reduction of their production and operating costs require the use of sophisticated methods of their diagnostics. This chapter considers the conditions for the operation of the equipment of the diagnosed object to be mostly normal. These are conditions that respect the requirements of the manufacturer. The necessary instrumentation consists of a set of meters with suitable converters needed to convert a set of object states to a set of signals that are measured and recorded. The sensor system should be part of the diagnosed object, as it is necessary to perform diagnostics during the construction of the electrical equipment. In terms of the choice of diagnostic methods, the chapter aims to distinguish between online and offline diagnostic methods. The task of establishing a forecast is to determine the development of the state of the diagnosed device.
