Abstract:
Described is a working unit (1) comprising a stationary part (2) and a movable part (3) and a movable working device (4) defining an electrical user device, powered by a stationary electricity supply (5A) through a first contactless electricity supply line (L1), defined by a rotary transformer; the working unit (1) also comprises a control element (12), movable as one with the working device (4) and designed to vary a relative electrical property as a function of a parameter relative to the working device (4); the control element (12) is powered, at least temporarily, independently from the electricity supply of the working device (4).
Abstract:
Zum Prüfen eines Prüflings (2) wird ein Transformator (10) verwendet. Der Transformator (10) umfasst einen Transformatorkern (13), eine Hochstromseite mit einem ersten Leiter (11), der sich entlang einer ersten Richtung erstreckt, und wenigstens einen zweiten Leiter (12), der um den Transformatorkern (13) gewickelt ist. Der Transformatorkern (13) weist entlang der ersten Richtung eine Länge auf, die wenigstens dreimal so groß ist wie ein Abstand des Transformatorkerns (13) von dem ersten Leiter (11).
Abstract:
Die Erfindung betrifft eine Wicklungsfixiervorrichtung (10) für eine hohlzylindrische Hochspannungswicklung (12, 98), umfassend ein säulenartiges Element (14, 72, 96), welches an seinen beiden axialen (20, 112) Enden mit jeweils einem quer dazu angeordneten Halteelement (16, 18, 62) verbunden ist, von denen wenigstens eines längs des säulenartiges Elementes (14, 72, 96) bewegbar und von diesem lösbar ist. Zwischen den beiden Halteelementen (16, 18, 62) ist ein Positionierbereich (22) zur Anordnung der hohlzylindrischen Hochspannungswicklung (12, 98) gebildet innerhalb dessen längs des säulenartigen Elementes (14, 72, 96) axial (20, 112) bewegliche Distanzelemente (24, 26, 28, 30, 92, 118, 120, 122) vorgesehen sind. Hierdurch ist eine radiale Fixierung der hohlzylindrischen Hochspannungswicklung (12, 98) in ihrem Innenraum ermöglicht. Es sind weiterhin Mittel (32, 34, 36, 38) vorhanden, um das wenigstens eine bewegbare Halteelement (16, 18, 62) gegenüber dem anderen Halteelement (16, 18, 62) mit einer Zugkraft (40 ⇔ 42) zu beaufschlagen, so dass eine Fixierung der hohlzylindrischen Hochspannungswicklung (12, 98) an ihren axialen Enden ermöglicht ist.
Abstract:
The present invention relates to a device including a high voltage apparatus (2') comprising a housing (3') enclosing a fluid for providing cooling and/or electrical insulation of the apparatus, and a detector equipment (5') adapted to detect one or more physical properties of the fluid and positioned spaced apart from the housing, and the device comprises a pipe assembly (6') for housing a fluid, whereby the pipe assembly is arranged between the detector equipment and the housing such that the fluid is extended without interruption in the pipe assembly, the fluid in the pipe assembly is in communication with the fluid in the housing, and the detector equipment is in direct communication with the fluid in the pipe assembly. The detector equipment is positioned below a top level (20) of the housing and at a safe distance from the housing of the apparatus, which makes it possible to carry out inspection, testing, maintenance, and calibration of the detector equipment without taking the high voltage apparatus out of operation.
Abstract:
A method replaces a saturable core reactor (SCRs) in a rectifier power transformer disposed in a transformer vault at its field location. The transformer has an oil-filled tank housing the SCRs. The tank has a manhole opening therein. A busbar structure is associated with each SCR. The method drains the oil from the tank. A busbar structure is disconnected from an associated SCR. The disconnected busbar structure is moved away from the transformer. The SCR is removed from the tank through the manhole opening and is lowered. The SCR is then conveyed from the transformer vault. A replacement SCR is moved to be adjacent the manhole opening and is then slid through the manhole opening and into the tank to a certain location. The busbar structure is moved so as to be associated with a replacement SCR and is connected to the replacement SCR.
Abstract:
A tunable inductor arrangement arrangable on a chip or substrate is disclosed. The tunable inductor comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged to tune the tunable inductor arrangement. Tuning is performed by selectively provide any of a circuit comprising the first and third winding parts in series between the first and second inputs, or a circuit comprising the first, second, fourth and third winding parts in series between the first and second inputs. The first and third winding parts are arranged on the chip or substrate such that magnetic fields of the first and third windings are essentially common, and the second and fourth winding parts are arranged to cancel electro-magnetic coupling with the first and third winding parts. A receiver, transceiver, communication device, method and computer program are also disclosed.
Abstract:
A tunable inductor arrangement arrangable on a chip or substrate is disclosed. The tunable inductor comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged to tune the tunable inductor arrangement. Tuning is performed by selectively provide any of a circuit comprising the first and third winding parts in series between the first and second inputs, or a circuit comprising the first, second, fourth and third winding parts in series between the first and second inputs. The first and third winding parts are arranged on the chip or substrate such that magnetic fields of the first and third windings are essentially common, and the second and fourth winding parts are arranged to cancel electro-magnetic coupling with the first and third winding parts. A receiver, transceiver, communication device, method and computer program are also disclosed.