Maschinenfabrik Reinhausen Gmbh

Albert Schmidbauer

Dieter Dohnal

Reinhold Baertl

Christian Hammer

Thomas M Huber

Dieter Geiger

Thomas Huber

The invention relates to a switching arrangement with two operational settings for switching over a winding during transformer operation, wherein during the switching-over a transient current commutates from one current path to another current path. In that case fixed contacts are arranged in several horizontal planes around a rotatable switching shaft and on an insulating-material frame and have upper and lower contact fingers that can be pressed apart and with which electrical connection can be made by an electrically conductive rail as movable switching contact.

Switching arrangement

A tap changer has an insulating housing and a plurality of annular arrays of contacts fixed in the housing. A vertical switching shaft in the housing carries contacts positioned to engage the fixed contacts of the respective array on rotation of the shaft. A tap-changer head closes an upper end of the housing, and a head flange above the tap-changer head is formed with threaded fastening bores. A geneva transmission on the tap-changer head has an output connected to the shaft and an input shaft projecting vertically upward from the head into the head flange. An upper transmission stage boltable to the bores on the head flange is connectable to the input shaft. A handwheel drive has a flange with an upper cover through which the input shaft extends and a handwheel or hex fitting on an upper end of the input shaft.

Tap changer

The invention relates to a tap changer having a switching monitoring device, which is arranged above the upper transmission stage in a housing. For monitoring purposes, two cam switches are provided which are actuated by a cam disk which is connected to the contact-bearing switch column of the tap changer. The cam disk has a horizontally split contour at its end face, wherein one of the two cam switches runs on each partial contour.

Tap changer having a switching monitoring device

A contact arrangement for use on an insulating rod having an upper fastening bore and a lower fastening bore has a U-shaped contact having a pair of limbs each formed with an upper bore and a lower bore. The contact is fittable around the rod with the limbs flanking the rod and the upper and lower bores of the limbs aligned with the respective upper and lower bores of the rod. Respective upper and lower contact holders each have a pair of mounts flanking the rod and respectively downwardly and upwardly engaging the limbs of the contact. The mounts of the contact holders are formed with bores aligned with the bores of the rod and with the bores of the respective limbs. Dielectric upper and lower pins extend through the bores of the mounts of the holders, the bores of the limbs, and the bores of the rod.

Contact arrangement

The invention relates to a multipoint switch for continuously switching different coil branches of a step-down transformer. According to said invention, at least one torque motor associated to various drive configurations carries out different driving functions for individual groups, thereby substituting a conventional motor.

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Roding, Germany

Albert Schmidbauer