TRANSFORMER WITH TEMPERATURE-DEPENDENT COOLING Russian patent published in 2019 - IPC H01F27/02 H01F27/08 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the electrical equipment. Electrical device (1) comprises housing (6), located in housing (6) and loaded with high voltage active part (2), which in its work creates heat, provided for cooling insulating liquid (20), which is filled with housing (6), and cooling unit (8) for cooling of insulating liquid (20), which has at least one cooling element (10) which is connected with possibility of passing heat with external atmosphere, through which cooling liquid (20) is directed, in which there is economically limited or even prevented temperature fluctuations, at that, cooling unit (8) has lifting section (15, 15.1) connected with housing (6) and equipped with lifting branches (9), which on each lifting branch (9) is connected to cooling element (10), wherein the volume of lifting portion (15, 15.1) is selected depending on the coefficient of thermal expansion of insulating liquid (20) such that filling level (21) at given temperatures reaches a different number of lifting branches (9).

EFFECT: limiting temperature fluctuations.

15 cl, 6 dwg