Abb Schweiz Ag

Abb Research Ltd.

Abb Technology Ag

Abb S.p.a.

Patrik Reto Kaufmann

Joerg Gebhardt

Thomas Gradinger

Francesco Agostini

Jens Rocks

Ralf Gitzel

Stephan Wildermuth

Francoise Molitor

Tilo Buehler

Joerg Ostrowski

Oleksandr Sologubenko

Gabriel Schuler

Federico Gamba

Harshavardhan M Karandikar

Rahul Pawar

Klaus Kraft

Emmanuel Logakis

Maciej Mruczek

Libor Vitek

Kai Koenig

Jindrich Janos

Jerry Earl

Peter Unternaehrer

Harshavardhan M Karankikar

Boguslaw Samul

A system for monitoring a switchgear includes multiple infrared cameras with fields of view; a processing unit; and an output unit. The cameras acquire multiple image data of a plurality of phases of the switchgear, and the processing unit determines whether there is a phase imbalance in a specific phase comprising a determination from a plurality of image data that temperature information for a plurality of component parts and/or a plurality of connections for that specific phase has an overall enhanced temperature compared to the temperature information for the same plurality of component parts and/or the same plurality of connections for one or more other phases of the plurality of phases. The output unit is configured to output information that a fault or load imbalance has occurred in a phase.

System for monitoring a switchgear

A system for monitoring a switchgear includes: an infrared camera for acquiring at least one infrared image of the switchgear; a processing unit for determining a pixel in the at least one infrared image associated with a hottest temperature, determining e pixels in the at least one infrared image associated with a temperature that is within a threshold temperature of the hottest temperature, and determining that a hot spot exists in the switchgear as a determination, the determination being a utilization of the determined pixels in the at least one infrared image; and an output unit for outputting an indication of a fault in the switchgear based on the determined hot spot.

An arrangement for electrically connecting a circuit breaker to a laminated busbar in a switch gear cabinet in which the circuit breaker has at least one terminal to be contacted by a connecting bar and in which the laminated busbar includes at least one conducting layer for conducting electric current which is covered by adjoining insulating layers attached thereto, the arrangement including: a first cylindrical connecting element and a second cylindrical connecting element which are arranged at a distance to each other at the conducting layer and project away from the conducting layer; an electrically conducting distribution bar which is mounted to free end portions of the first and second cylindrical connecting elements; and a terminal member which is mounted to the distribution bar at a center between the first and second cylindrical connecting elements. The terminal member is to be contacted by the connecting bar.

Arrangement for connecting a circuit breaker to a conducting layer of a laminated busbar and switchgear comprising such an arrangement

A low or medium voltage switchgear monitoring system includes: at least one sensor; a processing unit; and an output unit. The at least one sensor acquires sensor data within a compartment of a switchgear. The sensor data includes first sensor data. The sensor data includes second sensor data. The second sensor data is acquired a set time after the first sensor data. The at least one sensor provides the first sensor data and the second sensor data to the processing unit. The processing unit determines status information for a compartment of the switchgear based on a comparison of the second sensor data to the first sensor data. The output unit outputs the status information.

Low or medium switchgear monitoring system

A cooling system includes an evaporator associated with a heat source. A condenser is located at a higher elevation than the evaporator. A heat pipe structure fluidly connects the evaporator with the condenser. A fan forces air through the condenser. A working fluid is in the evaporator so as to be heated to a vapor state, with the heat pipe structure transferring the vapor to the condenser and passively returning condensed working fluid back to the evaporator for cooling of the heat source. A plurality of thermoelectric generators is associated with the condenser and converts heat, obtained from the working fluid in the vapor state, to electrical energy to power the fan absent an external power source. The thermoelectric generators provide the electrical energy to the fan so that a rotational speed of the fan is automatically self-regulating to either increase or decrease based on a varying heat load.

Switchgear cooling system comprising a heat pipe, fan and thermoelectric generation

A condenser for condensing vapor to liquid for cooling a switchgear having a heat generating component inside an enclosure and tubing structure associated with the heat generating component. A working fluid is disposed within an end portion of the tubing structure. The condenser includes a hollow tubular base defining a volume and having first and second opposing opened ends. A plurality of fins extends from a periphery of the base. The fins are in spaced relation and disposed about the entire circumference of the base. A first end cap is coupled to the base so as to close the first opened end. A second end cap is coupled to the base to close the second opened end. The second end cap has port structure constructed and arranged to fluidly communicate the tubing structure with the volume.

Passive cooling system for switchgear with star-shaped condenser

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

Cooling apparatus cooling for an electrical or electronic device, comprising an at least partially hollow body containing a refrigerant and having a plurality of electrically conductive sections Each electrically conductive section has a respective coupling portion suitable to be operatively associated with a corresponding electrically conductive part of the electrical or electronic device, wherein the at least partially hollow body further comprises one or more electrically insulating sections. Each electrically insulating section is positioned between and electrically insulates from each other two adjacent electrically conductive sections.

Cooling apparatus for an electrical or electronic device, and electrical or electronic device, in particular a circuit breaker, comprising such cooling apparatus

A cooling apparatus is provided for a switchgear having at least one primary contact to connect to a terminal of a circuit breaker, with a busbar joint connected to the primary contact. The cooling apparatus includes an evaporator associated with the primary contact. A condenser is located at a higher elevation than the evaporator. Heat pipe structure fluidly connects the evaporator with the condenser. Heat transfer structure is coupled with the busbar joint for removing heat from the busbar joint. Working fluid is in the evaporator so as to be heated to a vapor state, with the heat pipe structure transferring the vapor to the condenser and passively returning condensed working fluid back to the evaporator for cooling the at least one primary contact.

Cooling apparatus for switchgear with enhanced busbar joint cooling

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.

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Baden, Switzerland

Patrik Reto Kaufmann