US 10,707,007 B2Granted

Transformer with heated radiator member

AssigneeSiemens Aktiengesellschaft

InventorFlorian Bachinger

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Abstract

An electrical device for connecting to a high-voltage power grid has a boiler, which is filled with an insulating fluid and in which a magnetizable core and at least one winding, which surrounds a section of the core, are arranged, and a cooling system which includes at least one radiator which is arranged outside the boiler and is connected thereto via the radiator in order to circulate the insulating fluid, wherein the radiator has at least two heat exchange elements which are connected in parallel with one another. In order to enable a cold start to be accelerated and to be carried out even at relatively low temperatures only one of the heat exchange elements has a heat-conducting connection, as a heated heat exchange element, to a heat source which generates heat when the operation of the electrical device is started.

Claims7

Dependent claims

An electrical device for connecting to a high-voltage power grid, the electrical device comprising:

a boiler filled with an insulating fluid;
a magnetizable core and at least one winding, which surrounds a section of said core, disposed in said boiler;
a cooling system having at least one radiator arranged outside said boiler, said cooling system including an inflow line and a return flow line each connecting said boiler to said radiator in order to circulate the insulating fluid;
and
at least one heat pipe;
said radiator having at least two heat exchange elements connected in parallel with one another, said at least one heat pipe forming a heat conducting connection between only one of said at least two heat exchange elements and at least one component selected from the group consisting of said boiler and the insulating fluid;
and
said one of said at least two heat exchange elements being a heated heat exchange element due to heat transferred thereto from said at least one heat pipe.

5 more elements

Dependencies are inferred from the claim text.