Abstract:
Eine Vorrichtung (1) zur Kühlung eines elektrischen Leistungsschalters (2) in einem Schaltschrank (3), umfassend einen Kühler (4) mit einem Kühlkörper (6), welcher thermisch leitend mit dem elektrischen Leistungsschalter (2) verbunden ist, zeichnet sich dadurch aus, dass der Kühler (4) weiterhin einen sich in vertikaler Richtung erstreckenden kaminartigen Abzug (8) sowie ein mit dem Kühlkörper (6) thermisch leitend verbundenes Wärmerohr (10) umfasst, welches sich vom Kühlkörper (6) aus in den kaminartigen Abzug (8) hinein erstreckt und an welchem im Innenraum des kaminartigen Abzugs (8) angeordnete Kühlrippen (12) vorgesehen sind.
Abstract:
Die Erfindung betrifft einen Umsteller für einen Transformator bestehend aus mehreren zueinander parallelen, beabstandeten und kreisförmig um eine Mittellängsachse (MLA) angeordneten Kontaktstäben (2) und einer gegenüber den Kontaktstäben (2) drehbeweglichen Kontaktanordnung (5), wobei zur Erzeugung einer Konvektionskühlung die Kontaktstäbe (2) zumindest teilweise hohl ausgebildet sind und jeweils zumindest eine erste Öffnung (6) zum Einströmen eines Kühlmediums und jeweils zumindest eine zweite Öffnung (7) zum Ausströmen eines Kühlmediums aufweisen und wobei die erste und zweite Öffnung (6, 7) entlang der Mittenlängsachse (MLA) zueinander beabstandet angeordnet sind.
Abstract:
Die Erfindung betrifft ein Steuergerät, insbesondere einen elektrischen Schalter (4) zur Verwendung für ein Elektrohandwerkzeug (1), wie ein Akku- und/oder Netz- Elektrowerkzeug, beispielsweise Bohrmaschinen, Schleifer, Sägen, Hobel, Winkelschleifer o. dgl., mit einem Elektromotor (3). Der Schalter (4) besitzt ein Gehäuse (5) zur Aufnahme wenigstens eines wärmeerzeugendes Bauteils, wie eines Leistungstransistors, eines MOS- FETs, eines Triacs o. dgl., das insbesondere in einer elektrischen Schaltungsanordnung, die beispielsweise zur Steuerung und/oder Regelung des Elektromotors (3) durch entsprechende Steuerung und/oder Regelung des durch das Bauteil zum Elektromotor (3) fließenden elektrischen Laststroms dient, angeordnet ist. Ein Mittel (8) zur Wärmeleitung steht einerseits mit dem Gehäuse (5) des elektrischen Schalters (4) und/oder mit dem wärmeerzeugenden Bauteil, insbesondere mit dem im Gehäuse (5) befindlichen Leistungshalbleiter, und andererseits mit einem dem Schalter (4) zugeordneten gekühlten Bereich (9) in Verbindung.
Abstract:
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.
Abstract:
Le dispositif de refroidissement permet de s'adapter aux installations existantes, sans remettre en cause le développement de celles-ci. Il consiste à utiliser des caloducs (12) encastrés partiellement dans le carter (10) de l'appareil. Cette partie encastrée (12A) du caloduc (12) pénétrant dans le carter (10) possède un manchon (14) d'isolation électrique et bon conducteur de la chaleur. Application aux disjoncteurs d'une installation électrique moyenne tension et à fort ampérage.
Abstract:
The switching apparatus and the method are for varying the impedance of a phase line of a segment of an electrical power line. The phase line includes n conductors electrically insulated from each other and short-circuited together at two ends of the segment. The apparatus comprises at least one first vacuum interrupter connected in series with at least one of the conductors; at least one first controllable motor for selectively opening and closing the at least one first vacuum interrupter; a detector for detecting a parameter representative of current operating conditions of the phase line; and a controller for controlling the at least one first controllable motor according to the parameter detected by the detector.
Abstract:
The invention provides a cooling device (1) for a Gas Insulated Switchgear. The cooling device (1 ) comprises a condenser (11) arranged outside the gas chamber (2), an evaporation part (13) arranged in the gas chamber, and at least one fluid conduit (12) connect the evaporator device (13) and the condenser (11); the fluid conduit (11 ) is heat conductive and is filled with low-boiling condensate (120) to transfer heat from the evaporation part (13) to the condenser (11). The evaporation part (13) and the at least one fluid conduit (12) can be integrated together, and the evaporation part (13) is the gas chamber end of the at least one fluid conduit (12). Or the condenser (11) is a separated part and it is liquid connective with al! the fluid conduits (12). The condenser (11 ) comprising a heat sink (110) which is connected with the fluid conduit (12) and is arranged outside of the gas chamber (2).
Abstract:
An electrode assembly (70) for a circuit breaker (10) is provided. The electrode assembly (70) includes a conductive assembly (90) and a heat transfer assembly (200). The conductive assembly (90) includes a stem portion (92) and a contact portion (94). The heat transfer assembly (200) includes a number of elongated bodies (202), a first heat transfer surface (204), and a second heat transfer surface (206). The first heat transfer surface (204) is disposed on the conductive assembly (90). Each heat transfer assembly body (202) includes a second heat transfer surface (206). Each heat transfer assembly body (202) is coupled to the conductive assembly (90) with the first heat transfer surface (204) coupled to a number of second heat transfer surfaces (206).
Abstract:
A cooling apparatus is provided for a switchgear. The switchgear has an enclosure having a plurality of compartments. The cooling apparatus includes at least one evaporator constructed and arranged to be mounted in one of the compartments. The evaporator includes an evaporator plate having surfaces defining passage structure therein, and a cover plate covering a portion of the evaporator plate to seal the passage structure. A condenser is located at a higher elevation than the evaporator. First and second conduits fluidly connect the evaporator plate with the condenser. A working fluid is in the passage structure so as to be heated to a vapor state at the evaporator, with the first fluid conduit transferring the vapor to the condenser and with the second fluid conduit passively returning condensed working fluid back to the passage structure of the evaporator.
Abstract:
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.