Abb Schweiz Ag

Abb Research Ltd.

Gabriel Schuler

Harshavardhan M Karandikar

Patrik Reto Kaufmann

Tilo Buehler

Rahul Pawar

Beat Guggisberg

Oleksandr Sologubenko

Reto Flueckiger

Peter Unternaehrer

Jerry Earl

Harshavardhan M Karankikar

Stefan Wicki

Herbert Kaufmann

A cooling apparatus is provided for a switchgear. The switchgear has one or more primary contacts constructed and arranged to connect to a terminal of a circuit breaker. The cooling apparatus includes an evaporator constructed and arranged to be associated with each primary contact. A condenser is located at a higher elevation than the evaporator. Fluid conduit structure fluidly connects the evaporator with the condenser. A portion of the fluid conduit structure defines a busbar tube electrically connected with an associated primary contact and defining a busbar of the switchgear. Working fluid is in the evaporator so as to be heated to a vapor state, with the fluid conduit structure being constructed and arranged to transfer the vapor to the condenser and to passively return condensed working fluid back to the evaporator for cooling the at least one primary contact and the associated busbar tube.

Cooling apparatus for switchgear with heat pipe structure having integrated busbar tube

A cooling apparatus for cooling a switchgear is provided. The switchgear has one or more primary contacts supported by a bushing and constructed and arranged to connect to a terminal of a circuit breaker. The cooling apparatus includes at least one evaporator associated with each primary contact, a condenser apparatus located at a higher elevation than the at least one evaporator, fluid conduit structure connecting the at least one evaporator with the condenser apparatus, and electrically insulating working fluid in at least one evaporator so as to be heated to a vapor state, with the fluid conduit structure being constructed and arranged to transfer the vapor to the condenser apparatus and to passively return condensed working fluid back to the at least one evaporator.

Switchgear having evaporative cooling apparatus

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Arth, Switzerland

Gabriel Schuler