Maschinenfabrik Reinhausen Gmbh

Ansgar Hinz

Karsten Viereck

Dieter Dohnal

Reiner Brill

Frank Micksch

Helmut Proelss

The invention relates to a method for regulating the voltage of a transformer () having different winding taps (). The problem addressed by the invention is that of providing a method with which different load flow directions can be regulated with conventional transformers () and voltage regulators () in order to ensure a safe and reliable supply of voltage. The general inventive concept consists in determining, using a method in which a quadrant system () is used, the phase angle of the conduction current (I) and thus the load flow direction, thereby preventing deviation from the voltage range as a result of power input that is too high, by controlling the load tap changer ().

Method for regulating the voltage of a transformer

The invention relates to a high voltage transformer () having a sensor system () for monitoring physical characteristic variables. In particular, said sensor system has at least one sensor () that comprises a glass fiber () with a sensor head (). Said sensor head supports a plurality of Bragg gratings (). An evaluation unit () is associated with the sensor system and is connected to the at least one sensor head via said glass fiber. The invention is based on the general inventive concept of arranging the sensors of the sensor system between successive windings () of the high voltage transformer using spacers. In addition, the use of a plurality of Bragg gratings in the sensor head ensures that at least one of the Bragg gratings determines the actual physical characteristic variables such as temperature or contact force (A).

High voltage transformer having a sensor system, method for monitoring physical characteristic variables of a high voltage transformer and sensor system for monitoring physical characteristic variables

The invention relates to a method for dehumidifying air and to an air dehumidifier. To this end, a filter element is provided that is filled with granular material that can be regenerated by baking out. For effecting this baking out, a heating device is provided that is only actuated when both a humidity sensor indicates that a humidity limit value has been exceeded as well as a relative pressure sensor or a comparable technical means indicates that, at the moment, no flow toward the oil expansion tank is recorded.

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Leichlingen, Germany

Ansgar Hinz