Patent ID: 11927398
Assignee: ABB SCHWEIZ AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H | IPC F  H

Claim 6:
7. A method of cooling at least one part of a medium voltage or high voltage switchgear with a cooling apparatus, the cooling apparatus comprising:
an evaporator section;
a fluid conduit; and
a condenser section,
wherein, the evaporator section comprises epoxy completely surrounding a current carrying contact, the epoxy forming a fluid channel that is in direct physical contact with the current carrying contact,
wherein, the fluid conduit fluidly connects the evaporator section to the condenser section,
wherein, the fluid channel is a section of the fluid conduit that is formed and entirely enclosed within the evaporator section and is electrically insulating,
wherein, the method comprises:
heating a working fluid in the evaporator section to a vapour state;
transferring the vapour by the fluid conduit to the condenser section;
condensing the vapour in the condenser section to the working fluid; and
passively returning the condensed working fluid via the fluid conduit to the evaporator section, and
wherein the fluid channel is configured to direct at least a portion of the working fluid into direct physical contact with an outer surface of the current carrying contact.