Annotation: In the article the negative impact of higher transmission and consumption of reactive power, proved feasibility reactive power compensation in load. According to the research, the mechanism of compensation based on synchronous motors with feedback on the system cos φ control current winding.
Key words: reactive power, power loss, synchronous motor, static compensator, network load, power factor induction motor.
Annotation: The article describes the installation of an improved reflect meter, complete with six infrared LED lights. As a result of theoretical research developed experimental setup for physical modeling of thermal stress in the workplace with an intense heat. Based on the physical modeling of the regularities of changes thermoradiation intensity depending on the spatial arrangement of heat sources.
Key words: heat flow, sensor, excessive heat radiation, heating temperature, measurement range.
Annotation: The article suggests dynamic mechanical model allows to simulate dynamic processes start and "pounced" load on the shaft of the induction motor, as well as to determine the starting points in the various laws regulating the speed of automatic control systems.
Key words: asynchronous motor, simulation, mechanical characteristic, voltage, frequency, engine idling, starting torques.
Annotation: The article, based on an analysis of existing light sources used in industrial, civil and residential buildings, the study shows the noise characteristics and the electromagnetic radiation of low pressure fluorescent lamps.
Key words: light, fluorescent lamp, lighting, the frequency spectrum of the radiation, noise, electromagnetic radiation measurement range.
Summary. In article, on the basis of the analysis of the existing light sources used in industrial, civil and in household rooms, characteristics of modern luminescent lamps of low pressure with electronic input-regulate devices are investigated.
Key words: light, illumination, fluorescent lamps, man, ultrasound.
Summary. The article presents the results of using the binary system cooling rescuer safety helmet. It is found that this allows a long time to carry out work under the influence of the presence of excess radiation protection from mechanical particles, as well as during extreme situations such as burning chemicals, magnesium alloys, electric circuits. For protection from ultraviolet radiation additionally developed a special coating with photochromic properties.
Key words: thermal radiation; protective helmet, air cooling, carbon dioxide, transparent protective shield.
