Siemens Aktiengesellschaft

Bardo Koppmann

Norbert Mitlmeier

Norbert Zimmermann

Markus Meier

Ludwig Niebler

Alf Wabner

Fritz Pohl

Johann Bauer

Peter Hartinger

Robert Adunka

Stephan Faber

Johann Drexler

Bernhard Streich

Josef Graf

Siegfried Neumann

Georg Bollinger

Wolfgang Brandl

Manuela Lüftl

Reinhard Zinner

Berthold Heldmann

Peter Schlegl

Andreas Krätzschmar

Reinhard Herbst

Eugen Mayer

Wilfried Kliemt

Markus Kropp

Manuela Lueftl

Roland Nagel

Christian Gogeissl

Alf c/o Siemens Ltd A&D Division Wsgr-Pd Wabner

A network monitoring device for a supply network and a method for actuating a switch unit are disclosed, wherein the switch unit can control the energy supply of a consumer connected to a supply network. In order to prevent an overload of the supply network or of parts thereof, according to an embodiment of the invention, the network monitoring device includes a communication device, wherein the network monitoring device can receive a switch command for a switch unit via the communication device and transmit same to the switch unit, wherein the network monitoring device is designed to determine a network utilization of the supply network by way of a measurement device and, in dependence on the determined network utilization,; to influence a received switch command for the switch unit, which would lead to increased energy consumption on the supply network.

Network monitoring device

An embodiment of the present invention discloses an electromagnetic switching device including a housing including a mounting side and a connector side opposite the mounting side. The connector side includes one first and second main connection area for connecting first and second main lines to first and second fixed main contacts disposed in the interior of the housing. In the interior of the housing, movable main contact bridges are disposed via which one main current path each main current path includes one of the first fixed main contacts, one of the second fixed main contacts, and one of the main contact bridges. The main connection areas are located opposite one another. One first and one second central area are disposed between the main connection areas. The central areas each extend from the first to the second main connection area. The central areas are elevated relative to the main connection areas and disposed next to one another viewed from the first to the second main connection area. The first central area is more elevated relative to the main connection areas than the second central area.

Electromagnetic switching device having a plurality of areas graduated relative to one another

A protective device is disclosed for combination with an electrical switching device including a main current line or for integration in such a switching device. In at least one embodiment, the protective device includes a switching element and a switching apparatus, which is provided for the actuation of the switching element and is influenced by a current flow through the main current line. In at least one embodiment, in order to influence the switching apparatus, a current transformer is integrated in the main current line and an electrical resistance of a secondary winding surrounded by the current transformer can be measured. A method for operating a protective device is also disclosed wherein the switching apparatus is triggered so as to actuate the switching element if the measured resistance reaches or exceeds a predetermined or predeterminable threshold value.

Protective device and method for its operation

A method and a device are disclosed for the secure operation of a switching device including at least one main contact which can be switched on and off and which includes contact pieces and a displaceable contact bridge, and at least one control magnet which includes a displaceable anchor. The anchor and the contact bridge are actively connected to each other such that the corresponding main contact can be opened or closed when switched on and off. In at least one embodiment, the method includes the following: a) the path difference, which returns the anchor after switching on and off, is recognised, b) devices which are used to open welded main contacts are released by a release device when the recognised path difference exceeds a predetermined value and a specific time duration of time has run out after switching off.

Method and device for the secure operation of a switching device

A method and a device for the secure operation of a switching device are disclosed, including at least one main contact which can be switched on and off and which includes contact pieces and a displaceable contact bridge, and also at least one control magnet which includes a displaceable anchor. The anchor acts upon the contact bridge when it is switched on or off such that the corresponding main contact is opened and closed. In at least one embodiment, the method includes: a) the displaceable contact bridge of the at least one main contact recognizes when an opening point has been exceeded after being switched off, and b) the additional operation of the switching device is interrupted, according to a predetermined duration of time, when the opening point is not exceeded.

A method and a device are disclosed for the secure operation of a switching device including at least two main contacts which can be switched on and off and which includes respectively, contact pieces and a displaceable contact bridge, and at least one control magnet which includes a displaceable anchor. The anchor acts upon the contact bridge when it is switched on and off such that the corresponding main contact is opened or closed. At least one embodiment of the inventive method includes the following steps: a) release device for a force element remains in a first state in order to interrupt the main contact as long as the main contacts are closed when switched on and open when switched off, and b) the release device are transferred into a second state if at least the main contact is welded after switching off.

The invention relates to an electromagnetic switching device, in particular a contactor, comprising a switching device housing () and a plug-in module which can be inserted into the latter and which contains a coil form () for a coil. A tripping element () is mounted on a housing section () of the plug-in module (). Said element is designed to mechanically actuate the contact unit () of an electric switch () for producing an economy connection. The switch () is mounted on a support structure (printed-circuit board ()) that is located in the plug-in module (), with a supporting contour () of said switch adjoining a bearing contour () of the housing section ().

Electromagnetic switching device, in particular a contactor

An electromagnetic switching device, especially a contactor, includes a base, an arc chamber removable from the base, a contact bridge support and a spring-loaded locking element. The contact bridge support projects into the arc chamber and can be displaced in a direction of actuation. The contact bridge support can be locked by the locking element when the arc chamber is taken off. The locking element is configured as a lever that is swiveled about a swiveling axis which extends in perpendicular to the direction of actuation.

Electromagnetic switching device, especially contractor, with a contact bridge support lock

In a vacuum contactor, the armature is initially deflected from an armature rest position through an initial movement distance, and then through a driving movement distance to an armature operating position when a pull-in current is applied to a drive coil. An operating element is deflected from an element rest position to an element operating position by the armature only while the latter is passing through the driving movement distance. This makes it possible to achieve a good tripping characteristic of the vacuum contractor.

Vacuum contactor

An electromagnetic switching device includes a housing and a plug-in module which can be inserted into the housing at an insertion point in a direction of insertion. The plug-in module holds a magnetic yoke, attached to which is a coil unit. Two extensions, which point respectively to the front and to the rear in relation to the direction of insertion, are formed on the magnetic yoke. In order to retain the magnetic yoke, a retaining bracket extending transversally in relation to the direction of insertion, overlaps one of the fixing extensions and engages two retaining tongues from below, said tongues being formed as one-piece with the plug-in module.

Electromagnetic switching device, for example, contactor

An armature for a magnetic system of a switchgear, produced in the form of a one-piece sintered part, whose free design makes it possible to easily optimize the flux and mass and reduce production costs. The armature an H-shaped profile with lateral, plate-shaped pole faces which are interconnected by a central segment that guides the flux above and beneath a through-hole.

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Kaltenbrunn, Germany

Bardo Koppmann