FIELD: electrics.
SUBSTANCE: invention concerns electric equipment, particularly aggregate for playground heating, such as sports grounds, using cables (9, 9', 9") for electric current supply, deepened in ground soil. Aggregate features division of ground surface to be heated into several areas (1a, 1b, 1c, …, 1n), and heating of each area by at least two heating lines (9, 9', 9"), where each line is a secondary circuit of general transformer (3a, 3b and 3c). In addition, power supplied by each transformer can be adjusted depending on heating necessity for particular area.
EFFECT: prevented freezing of sports ground in an absolutely safe way in respect of electric current supply, at significant reduction of electric power consumption and commissioning and maintenance cost.
11 cl, 6 dwg
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