System including a transformer

A system, including:

• at least one transformer which includes at least one tank configured to at least partially receive at least one liquid;
• at least one overflow device and at least a first connection device configured to fluidically connect the at least one tank and the at least one overflow device, the at least one overflow device including at least one flexible member which is elastically deformable, the at least one overflow device being configured to periodically receive a portion of the liquid from the at least one tank under deformation of at least a portion of the at least one flexible member and return at least a portion of the received liquid to the at least one tank through the connection device;
• and
• at least one surface increasing means configured to provide an increase in an area of a heat transfer surface of the connection device across which heat may be dissipated from the liquid by providing one or more of the following:
• one or more protrusions, in particular one or more fins, which extend from at least one surface of the connection device, configuring the connection device as a conduit which is guided in a coiled and/or meandering manner in at least a section thereof, and configuring the connection device as a conduit which has a total effective length of at least 25 cm;
• wherein the at least one flexible member provides a variable liquid storage volume in the at least one overflow device by being elastically deformed as the at least one overflow device receives liquid from the at least one tank to increase a liquid storage volume in the at least one overflow device.

A system, including:

• at least one transformer which includes at least one tank configured to at least partially receive at least one liquid;
• at least one overflow device and at least a first connection device configured to fluidically connect the at least one tank and the at least one overflow device, the at least one overflow device including at least one flexible member which is elastically deformable, the at least one overflow device being configured to periodically receive a portion of the liquid from the at least one tank under deformation of at least a portion of the at least one flexible member and return at least a portion of the received liquid to the at least one tank through the connection device;
• and
• at least one cooling device which includes at least one phase-change material, the at least one cooling device being arranged in thermal communication with the connection device liquid to dissipate heat from the liquid to the at least one phase-change material, when the liquid is received in the connection device;
• wherein the at least one flexible member provides a variable liquid storage volume in the at least one overflow device by being elastically deformed as the at least one overflow device receives liquid from the at least one tank to increase a liquid storage volume in the at least one overflow device.