Study of relationship of structural and steam curing characteristics in nanostructured binder based foam concrete

In the paper the results of steam curing characteristics in nanostructured binder based foam concrete and their comparison with analogues are presented. Also the comparison study of parameters of vapor permeability,sorption hymidity,capillarity rise, heat conductivity (in dry service conditions) is realized. Effect of cellular composite structure on properties and reinforcement process of foam concrete is studied

Choice of commutation device and development of the scheme of a universal sectionalizing point with automatic load transfer function for the 0.38 kV electric network

The overestimated length of rural power lines of 0.38 kV leads to the fact that it is often not possible to fulfill both the sensitivity conditions of the protective device installed at the transformer substation and protecting the line from overloads and short circuits, and the requirements of the power supply reliability of consumers. This problem can be solved by installing in-line universal sectionalizing point equipped with an automatic load transfer function. The use of these devices allows dividing a line into sections provides the necessary sensitivity of protection for each section of the line and the possibility of supplying power to undamaged areas from a backup power source. In addition, only with the use of automated switching devices installed in power lines, it is possible to create intelligent electrical networks. When developing these devices, it is necessary to take into account the electromechanical characteristics of switching devices that are planned to be used for switching lines