Abstract:
An electrical switching device. which comprising at least one ingoing (51) conductor and at least a first (2) and a second (3) outgoing conductor, and an arrangement for connecting and disconnecting the conductors by means of an axial movement. The arrangement comprises an axially movable element (58), which is movable between a first and a second position. The device is arranged such that when the axially movable element (58) is in the first position, the ingoing conductor (51) and the first outgoing conductor (2) are electrically connected, and the ingoing conductor (51) and the second outgoing conductor (3) are disconnected. When the axially movable element (58) is on the second position, the ingoing conductor (51) and the first outgoing conductor (2) are disconnected, and the ingoing conductor (51) and the second outgoing conductor (3) are electrically connected.
Abstract:
Electrical high voltage lead-in comprising an insulating member (3) and at least one conductor member (4) extending through the insulating member (3), and an annular restraining member (2) peripherally encompassing the insulating member (3), wherein the members (2, 3, 4) are separately prefabricated. The members (2, 3, 4) are assembled by reciprocal shrinkage fit between the conductor member (4) and the insulating member (3) respectively on the one hand, and between the insulating member (3) and the retraining member (2) on the other hand. The conductor member(s) consists mainly of El-copper.
Abstract:
The invention concerns a system for operating an electric machine and a method for protecting an operation control unit in such a system. The system comprises an operation control unit (20), an alternating current cable (16) connecting the machine (30) with the operation control unit and an electric short-circuiting arrangement (26). This arrangement is connected to terminals of the operation control unit facing the cable and short circuits these terminals based on a detected overvoltage.
Abstract:
The invention refers to an explosion protection system for electrical apparatuses and machineries, such as manipulators or industrial robots, located in hazardous environments, i.e. environments containing explosive concentrations of inflammable gases, dusts or vapours, comprising means for applying internal pressurized air into an explosion proof enclosure and that has a purging system and electrical components, such as motors, relays, IC-boards, cables etc. The invention is achieved by, that a flow-and pressure sensor is arranged as an integrated unit and designed to stand high dynamic forces by having low inertia, balanced arrangement of moving parts and a movement guide, e.g. an axle with a support guide, with low friction.
Abstract:
The invention is a method, controller and control system for controlling a robot that is used in concert with at least one other robot to perform an operation on one or more work objects. Each robot controller checks whether a common reference value is not acceptable, and if so, provides a signal for the robot to wait before proceeding to the next task. Each robot controller also checks whether the target object is in the correct position or not; and also checks whether or not another robot has stopped. If either another robot has stopped and/or if the work object is not in the right position, the robot waits. The invention is particularly advantageous for automated painting whereby a production line may be re-started more quickly again after a stoppage or production delay.
Abstract:
An electrostatic separator intended for separation of liquid phase systems, made up of mixtures of liquids of various electrical permittivity. In particular, the separator is intended for separation of an oil-and-water emulsion. The electrostatic separator contains a vessel, inside which there is suspended a system of electrodes energised from an external voltage source. The electrode system comprises at least one pair of conducting plates (8), which is attached to a supporting frame (7) and electrically connected with the high voltage winding of a feeding transformer (9), which is placed in the supporting frame (7). The supporting frame (7) is preferably a casting of an insulating material. The conducting plates (8) of the electrode system are preferably connected to the winding of the feeding transformer (9) through a capacitive electrical connection.
Abstract:
The invention generally relates to energy metering for billing purposes, low voltage cable protection against by-pass coupling and communication possibilities for collecting energy meter values. More particularly, the invention relates to a system for electric energy distribution and for remote electricity metering, comprising a low voltage distribution grid having at least one splitting site, wherein at least one splitting site has a distribution unit. The distribution unit comprises connection means (18) and energy metering means (20) for each consumer site and a data communication unit (24) arranged to receive metering values from said energy means (20) and transmits the collected metering values from said distribution unit (14).
Abstract:
Pipe system for subsea installations for offshore production or processing of hydrocarbons, for interconnection of or internal connections in functional units, such as Xmas trees (1) and manifold modules (2), where a pipe connection comprises communicating pipe branches (5,7,8) which run with mutual angle deviation or parallel to each other. A pipe branch (5) is provided with a bellows device (11) for obtaining a certain possibility of movement of the pipe branch, and a second pipe branch (7) is also provided with bellows device (12) for obtaining a certain possibility of movement of the second pipe branch (7).
Abstract:
The present invention relates to a valve positioner (1) comprising: a valve operation information unit adapted to obtain operational information about a valve (14); a processing unit adapted to prepare a communication message comprising the operational information about the valve (14); a wireless transmitter adapted for transmission of a wireless communication signal comprising the communication message to a central valve monitoring unit (6); and an antenna adapted to transmit the wireless communication signal. The invention also relates to a central valve monitoring unit (6), a valve monitoring system (10), as well as to a method of using a valve positioner (1) for upgrading a valve monitoring system (10). (Fig 3)
Abstract:
The invention relates to a method for localizing a node in a wireless network, the method comprising: receiving location signals transmitted by beacons, the location signals comprising information about the locations of the respective beacons; detecting the respective received signal strengths of the received location signals; obtaining information about the different signal levels at which the beacons can transmit; studying the received location signals; determining the signal levels used by each of the beacons for the transmission of the location signals, based on the studying of the received signals; calculating a distance to each of the beacons based on the detected signal strengths and the determined signal levels; and localizing the node by means of the received location information and the calculated distances. The invention also relates to a node ant to a wireless network.