ISO series standards are in great demand in all countries where production is developed. Nevertheless, the standards are also used in the field of medicine, education, science, and logistics. One of them is the Energy Management System, which represents the consequences and methods of energy conservation management to minimize the cost of using energy resources. Unfortunately, in the Russian Federation the system of introducing an energy sign is a rare phenomenon. The article discusses problems that may arise when implementing an energy management system and possible ways to solve them.

In this work, based on the analysis of specialized scientific literature, an attempt is made to explore important and relevant aspects of the use of automatic reclosure (AR) systems in the field of electric power industry. General information about the operating principle and purpose of automatic reclosure devices is presented. The generally accepted classification of the latter, as well as their functions and basic operating parameters, is considered. The key features of the operation of this type of network automation are listed. Particular attention is paid to the application of autorecloser technology in the electric power complex. The current problems and limitations associated with the use of autorecloser devices in modern power supply systems are described, and possible ways to overcome them are outlined.

The analysis of the unipolar electric motor design and calculations showed the fundamental possibility of creating a low-speed electric motor with a power of up to 100 kW with a nominal rotation speed of 200 rpm. The electric motor under study has a fairly high efficiency, however, the current collector and the increased weight of active materials is a significant disadvantage. The advantages of the electric machine include the possibility of regulating the speed of rotation, both through the power channel by armature current, and through the low-power channel through the excitation system. Simultaneous control makes it possible to determine the most optimal control laws in terms of speed and efficiency of the rowing electric installation. It seems that unipolar electric motors have great potential as a low-speed electric motor, including with a superconducting excitation winding.

The article is devoted to the technical aspects of the use of protective shutdown devices in 220 and 380 V networks. The physical foundations of the functioning of protective devices in AC networks with a voltage of up to 1,000 V. are described in detail. The analysis of wiring diagrams for protective disconnection devices in single- and three-phase networks of TN-C-S and TN-S type grounding systems, as well as in electrical networks without grounding, has been performed.

The offered thermal method of diagnosing of the lead-acid storage battery allows, analyzing a temperature field on a surface of the case of the battery, to define malfunctions and to predict its residual resource.

This article discusses the possibility of applying analysis and calculation methods used in linear electrical circuits to some nonlinear circuits. It is shown that if we abandon quantitative criteria for the analysis and synthesis of nonlinear circuits using linear principles, then some problems of nonlinear electrical engineering can be solved quite correctly on the basis of linear theory. As an example, we consider the simplest ferroresonant voltage stabilizer using the superposition method and the equivalence of ferroresonant circuits of serial and parallel connections.

Geometricians and ordinary people have always been interested in such a figure as a ball and its "shell" – a sphere. Many real objects in astronomy, physics, biology and other natural sciences have the shape of a ball. We meet with balloons every day. Also, the tasks for the sphere and the ball are found in the tasks for the unified state exam at school. This is the relevance of the research: it is very important to study the various properties of the presented figures for their correct and competent application in real life. The purpose of this work is to prove the effectiveness of the use of spherical surfaces in various spheres of human activity. The hypothesis of this work: in the manufacture of solar panels in the form of a sphere or spherical cells, the performance of such batteries will increase.

The article considers the efficiency of using transformer fluid 561 as a cooling and dielectric liquid for filling oil transformers. The effect of this liquid dielectric on the human body is analyzed, as well as the risk of environmental impact of the substance is assessed. The characteristics of heat resistance and Gorenje characteristics of transformer liquid 561 are given. The conclusion is made about the feasibility of using the reduced liquid dielectric based on the advantages in comparison with other types of dielectrics used in power transformers.