Abstract:
The invention is related to a dry transformer (40), comprising a transformer core (10) with at least two parallel limbs (12, 14, 16, 58, 60, 62) and belonging upper (26, 28, 30, 42, 44, 46) and lower (20, 22, 24) yokes and at least two hollow cylindrical coils (32, 52, 54, 56, 112, 114), each arranged around a limb (12, 14, 16, 58, 60, 62). A cooling system comprising at least one wall-like diaphragm (74, 90, 102) in-between neighboured coils (52, 54, 56; 112, 114) is foreseen which is in parallel to the orientation of the limbs (12, 14, 16, 58, 60, 62).
Abstract:
Es wird ein Leistungsschalter (1) zur Verfügung gestellt, welcher füllbar ist mit einem Löschgas und zwei relativ zueinander und entlang einer Längsachse (A) des Schalters verschiebbare Kontaktanordnungen aufweist. Die Kontaktanordnungen bilden ein Abbrandkontaktsystem (12) und ein dazu elektrisch parallel geschaltetes Nennstromkontaktsystem (9), wobei die eine der Kontaktanordnungen innere Nennstromkontakte (6) und äussere Nennstromkontakte (7) des Nennstromkontaktsystems (9)umfasst, die inneren Nennstromkontakte (6) die äusseren Nennstromkontakte (7) in Richtung der Längsachse (A) überragen und die äusseren Nennstromkontakte (7) die inneren Nennstromkontakte (6) koaxial umgeben. Ein solcher Leistungsschalter weist eine hohe Stromtragfähigkeit auf und zeigt ein sicheres Ein- und Ausschaltverhalten insbesondere während und nach einem auftretenden Kurzschlussstrom im Schalter.
Abstract:
A high-voltage device (100) is provided that comprises a conducting element (121; 122; 123) for conducting high-voltage current and at least one transient reducing unit (130) for reducing voltage peaks of existing propagating very fast transients by the generation of arcing, the transient reducing unit having at least one arcing occurrence surface (131; 131a; 131b; 131c). The at least one arcing occurrence surface of the at least one transient reducing unit is positioned in the vicinity of the conducting element such that arcing occurs between the transient reducing unit and the conducting element when the potential difference between the transient reducing unit and the transient conducting element is above a threshold value, namely at the occurrence of a very fast transient. Further, a method is provided for equipping a high-voltage device with the transient reduction unit.
Abstract:
The invention is related to a wound transformer core (10, 66, 82) with at least one core loop (12, 14) made of magnetic material, comprising multiple thin amorphous band-like iron sheets (16) which are concentrically stacked around at least one center axis (18, 20). A lower yoke section (24), an upper yoke section (22) and at least two limb sections (26, 28, 30) are developed, comprising a modular plate-like support structure (40, 74, 76) which is glued upright to the center axis (18, 20) on both face sides (70, 72) of the lower yoke section (24) and on both face sides (70, 72) of each limb section (26, 28, 30) in that way, that neighboured iron sheets are glued together at their outer edge. The modular plate-like support structure (40, 74, 76) comprises for each face side (70, 72) of the belonging core sections (24, 26, 28, 30) at least two plate-like modules (42, 44, 46, 48, 50, 86, 88, 90), which are connected each to each other by a first (100) or second (110) plug-in connection..
Abstract:
The invention relates to coils of a transformer, and particularly to a transformer having coils arranged to each other. Each coil (100, 1801, 1802) comprising a plurality of coil segments (102) of a modular type, each of which having a uniform cross-section. Each coil segment (102) is electrically connected to another coil segment (102) of the plurality of coil segments (102) forming a stack (100), the stack (100) defining a stack axis (A). The uniform cross-section of each of the plurality of coil segments (102) is a non-circular cross-section. The coils (100, 1801, 1802) of modular coil segments (102) may be efficiently manufactured.
Abstract:
A high-voltage device (100) is provided that comprises a conducting element (121; 122; 123) for conducting high-voltage current and at least one transient reducing unit (130) for reducing voltage peaks of existing propagating very fast transients by the generation of arcing, the transient reducing unit having at least one arcing occurrence surface (131; 131a; 131b; 131c). The at least one arcing occurrence surface of the at least one transient reducing unit is positioned in the vicinity of the conducting element such that arcing occurs between the transient reducing unit and the conducting element when the potential difference between the transient reducing unit and the transient conducting element is above a threshold value, namely at the occurrence of a very fast transient. Further, a method is provided for equipping a high-voltage device with the transient reduction unit.
Abstract:
Conductor arrangement (100) for reducing very fast transients in high voltage applications comprising a conductor element (10, 70) having a main conducting orientation x, a conductive annular shell element (20) coaxial to the conductor element (10, 70), thus forming an annular cavity (40) around the conductor element (10, 70). The annular shell element (20) in the main conducting orientation x comprises a first end portion (22) and a second end portion (24), wherein the first end portion (22) is conductively connected to the conductor element (10, 70). The second end portion (24) comprises an annular collar (26); wherein the collar (26) is substantially coaxial to the conductor element (10, 70), thus together with the conductor element (10, 70) forming a coaxial capacitor (30) which has a solid material filling (34). The capacitor (30) comprises a surge arrester (50; 51, 52; 34) which may serve as an energy conversion portion (50).
Abstract:
The invention is related to a wound transformer core (10, 66, 82) with at least one core loop (12, 14) made of magnetic material, comprising multiple thin amorphous band-like iron sheets (16) which are concentrically stacked around at least one center axis (18, 20). A lower yoke section (24), an upper yoke section (22) and at least two limb sections (26, 28, 30) are developed, comprising a modular plate-like support structure (40, 74, 76) which is glued upright to the center axis (18, 20) on both face sides (70, 72) of the lower yoke section (24) and on both face sides (70, 72) of each limb section (26, 28, 30) in that way, that neighboured iron sheets are glued together at their outer edge. Elongated through holes (52, 54, 78) are foreseen within the plate-like structure (40, 74, 76), which are arranged at least in part crosswise to the longitudinal extension of the stacked iron sheets.