Actuality of theme:       Presently the condition with illumination in industry of Ukraine can be appraised as critical. According to information of statistical documents of the system of lighting installations, in more than 60% production areas of industrial buildings, 75% apartment of administrative buildings, including more than three fourths of schools and other educational premises, about 90% outside illumination in general do not answer the normative requirements. The principal reasons of such condition are the shortage of economic sources of light and lighting devices, exploitation of physically threadbare wares. In addition the technical level of some domestic analogues is not as high as that of leading foreign firms. Condition of affairs with illumination is complicated by electric power price rise. In the conditions of steady energy resources price increase, and growth of requirements to requirements to quality of illumination, the main problems are the cost cutting, the rational use of energy and increase of ecological cleanness of lighting installations. Lighting installations of industrial enterprises in our country consume more than 40% electric power, used for artificial lighting.       The tems of artificial lighting on industrial enterprises have large influence on visual work, physical and moral conditions of people, and, consequently, on labour productivity, quality of products and industrial injuries.       The more precise and tense is visual work, the greater is this influence. Numerous researches ascertained the dependences of function of sight on the terms of artificial lighting. They are followed at setting norms of quality and quality descriptions of industrial lighting installations and at making recommendations on the choice of sources of light, systems and methods of artificial lighting.       Pulsations of luminosity at power supply of industrial frequency (50 Hertz) have negative influence on sight and cause the eye fatigue. The phenomenon of stroboscopic effect can appear at quick lighting of moving and revolving objects and it increases the danger of industrial injuries. Precautions on the decries of pulsations to the level, set by norms, must be taken in lighting installations.       Nowadays, due to the growth of lighting loading, there is the tendency of application of energy conservation lamps. To compare different sources of light, cost, term of service, consumable power and other parameters need to be taken into account. Therefore the task of estimation of electromagnetic compatibility (EMC) of artificial sources of light according static and dynamic characteristics is very actual.       Purpose of work:       The work is aimed to estimate electromagnetic compatibility of artificial sources of light (lamps) according to static and dynamic characteristics. To achieve our target we need to solve the following task.       1. to get static descriptions (dependence of lamp light stream on network tension, which remains unchanging during every test) of different lamps by means of experiment and process them by the least– squares method;       2. to get dynamic descriptions (dependence of lamp light stream on network tension at its rapid changes) of different lamps by means of experiment and process them by the least– squares method;       3. to compare all types of lamps, used in research on the fact of sensitiveness to the change of tension and efficiency of application of one or another lamp.       Contents of work:       1. The EMC estimation according to static characteristics.       The changes of tension on the clamps of lighting electric receivers (briefly lamps) worsen the terms of work at artificial lighting and influence on the durability of lamps. Influence of tension declination on illumination:       * The durability of lamps of lighting goes down, so at the level of tension 1.1 V the durability of incandescent lamps decreases in 4 times.       * The light stream of incandescent lamps goes down by 40 per cent, and luminescent lamps by 15 per sent at the level of tension 0.9 V.       * Luminescent lamps twinkle at the level of tension less than 0.9 V, and they do not glow at all at tension 0.8 V. Therefore in general case for the EMC estimation it is required to develop the dynamic models of transformation processes of electric energy in light one, changes of lamps durability and influences on a man (fatigue, psychological reaction), resulting in diminishing productivity and worsening health.       The level of complication of models is determined by concrete problem specifications. The inertia of lamps is usually ignored at the slow changes (declinations) of tension and static descriptions are used; EMS is estimated within the terms of dynamic models at rapid changes of tension. Static characteristics are found by means of experiment of steady tension during every test. Usually the tension is expressed by relative units from nominal, and static characteristics are approximated by the sedate function of kind. Researches of different types of lamps are represented in this work: incandescent (IL) lamps, luminescent lamps (LL) and energy conservation lamps (ECL). Static processing of researches according to the least-squares method was undertaken, analytical characteristics were got.       2. Dynamic characteristics of EMC lamps.       A necessity in dynamic models arises up at the rapid changes of tension, which diminish lamp durability and cause unfavorable influences on a man due to change of luminosity of workplace.       One of the parameter of electromagnetic compatibility (EMC) of lamps is flicker level of tension, which estimates the additional eye fatigue from vibrations of tension. In the standard 13109-97 in the flickermodel a standard 60 W incandescent lamp is used. Application of incandescent lamps is not recommended lately. In this connection, there is the necessity to consider lamp parameters in flicker model, which are used on the examined enterprise. For this purpose it is necessary to know the parameters of lamps models. In [4] parameters were determined by means of low-frequency modulation of tension with bearing frequency 50 Hertz. The range of possible vibrations is within the limits from 0.5 to 35 Hertz. It is known that frequency modulation is applicable, if frequency of vibrations is far less than bearing frequency. This condition is executed for the initial range of frequencies. In this connection there was a necessity in determination of parameters of models according to temporal characteristics.       Transitional functions are determined on the reaction of object on the salutatory change of entrance value. Vibrations of tension are the operating values of tension. It is impossible to carry out the rectangular jump of operating values. Therefore the rapid change of instantaneous values of tension was carried out with the help of tiristor key which shunted the resistance, switched on with the lamp, in the offered method. The processes of change of instantaneous values of tension and light stream were written down by analog-digital transformers. According to the data received by means of quadratic average on the interval 0.01 s. the graphs of change of operating values of tension and light stream were received. Setting different constants of time on graph of change of tension, the graph of the expected light stream was being built. Constant of time sought for was determined according to the least-squares method as minimum of average square declinations of planned and actual graphs of light stream.       Researches were executed for different types of lamps of different power.       Literature:       1. Козлов В.А., Билик Н.И., Файбисович Д.Л. Справочник по проектированию электроснабжения городов. – Л.: Энергоатомиздат, 1986. – 254с.       2. Шидловский А.К., Борисов Б.П., Вагин Г.Я, Куренный Э.Г., Крахмалин И.Г. Электромагнитная совместимость электроприемников промышленных предприятий. – К.: Наукова думка, 1992. – 235 с.       3. Шидловский А.К., Куренный Э.Г. Введение в статистическую динамику систем электроснабжения. – К.: Наукова думка, 1984. – 268 с.       4. Brauner G., Hennerbichler C. Lamp models for flicker simulation and illumination planning / 5th International Conference: Electrical power Quality and utilisation, Cracow, 1999 – P. 235 – 240.