Siemens Aktiengesellschaft

Michael Hahn

Werner Hartmann

Roman Renz

Klemens Fieberg

Detlev Schmidt

Kathrina Marek

Johannes-Gerh Banghard

Michael Bach

Erhard Deylitz

Harald Kurzmann

Klaus-Gunther Berndt

Johannes-Gerhard Banghard

Bernd Adam

Joerg Kusserow

Klaus Oberndoerfer

Jeffery C Mizener

Johannes Banghard

An electrical contact device for an arrangement includes two apparatuses, between which a relative movement takes place along a first movement path. In at least one embodiment, the electrical contact device includes a first contact, including a first contact surface, and includes a second contact including a first multiplicity of contact arms, each provided with a contact projection for making contact with the first contact surface. In at least one embodiment, in order to prevent excessive friction wear to the first contacts even when the contact projections of the associated second contacts are arranged successively in the same direction as the first movement path, at least one device is provided for controlling a relative movement between the two contacts along a second movement path, which runs parallel to the first contact surface of the first contact and obliquely with respect to the first movement path.

Electrical contact device

A device for detecting wear of switching contacts in an electric switch appliance is disclosed, the wear of the contacts being caused at least at a pair of switching contacts appliance. The device includes a lightwave guide and a detector. A light exiting from at least one light source is capable of being injected into the lightwave guide and guided by the lightwave guide up to the detector. The lightwave guide is arranged relative to the pair(s) of switching contacts, such that the intensity of the light injected in the lightwave guide, which is measured by the detector, decreases in the switching appliance as the number of wear particles of contacts generated by the wear of the contacts increases.

Device for detecting contact wear in switching appliances

A switch contact arrangement for a power switch is provided with a device for increasing the contact force acting between switch contacts. The device includes a cavity which is made in a stationary conductive element of the switch contact arrangement in such a manner that the direction of the current in the conductive element adjacent to the stationary switch contact runs essentially perpendicular to the longitudinal direction of the conductive element and therefore essentially parallel to the direction of current in an associated displaceable conductive element. The above-mentioned arrangement is suitable for low-voltage power switches with a selective form, whereby the switch contacts thereof allow a short-circuit current to be guided without premature opening.

Switch contact arrangement comprising a device for increasing a contact-force acting between switch contacts

The invention relates to a contact arrangement for a vacuum switch tube for low-voltage power switches. The aim of the invention is to reduce the contact force required to control short circuit currents. To this end, a twin-contact contact arrangement is used wherein every contact comprises a plurality of separate individual contacts having a defined spring rate. At least one of the contact bodies () is configured as a two-layer spiral contact with a lower layer consisting of a highly elastic material and an upper layer () consisting of a highly electroconductive material. A contact coat () consisting of a contact material is provided on the upper layer in the outer zone of every contact arm ().

Contact arrangement for a vacuum switch tube

A new vacuum switching chamber is intended for power breakers in the low-voltage range and is distinguished by a compact form with a small physical height and a high switching capacity. Its enclosure includes a plate-like power current connection, a cylindrical wall part which surrounds flat spiral contacts, an annular insulator and a membrane disk with a centrally arranged power current supply bolt.

Vacuum interrupter chamber with ring-shaped insulator

A remote service system for a circuit breaker fixed in a remote allocation. Remote service is provided by any station that can be accessed through a communication network. The system is provided, on one side, with a diagnostic hand-held apparatus which is dedicated to a switch service and should be connected, if necessary, to a circuit breaker, through a connecting unit provided to that end, and on the other side, with a telecommunication interface for exchanging a data through a telecommunication network.

Circuit breaker remote service system

In a vacuum interrupter for circuit breakers, the aim is to reduce the contact pressure force. The contacts of the vacuum interrupter are configured for this purpose such that there is arranged inside an outer contact region, serving the purpose of arc quenching, an inner contact region which includes a plurality of resilient contact tongues arranged next to one another on a divided circle.

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Berlin, Germany

Michael Hahn