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AssigneeMaschinenfabrik Reinhausen GmbH
InventorsDieter Dohnal, Jochen Ermisch
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The invention relates to an arrangement for automatically influencing a mains supply. A voltage transformer is provided as a pilot transformer which detects the real value of the voltage which is to be adjusted and which transmits said value to a motor drive via an individual electric measuring circuit in which means are provided for comparing said real value to a set point value and for producing an adjustment command which is dependent upon said comparison. The invention also relates to a correspondingly equipped motor drive provided with an additional control module which directly actuates an electric motor independently from the direction of rotation when required. Said electric motor drives a step-switching mechanism on the variable-voltage transformer, whereby the voltage is adjusted, thereby influencing the mains supply.
Arrangement for automatic mains influencing with a tapped transformer, the regulating winding of which is provided with different winding taps which are connectible without interruption by a tap changer having a motor drive mechanically coupled therewith, wherein a measurement transducer for detection of the actual value of the respective voltage to be regulated is arranged at the tapped transformer, wherein means are provided for comparison of the actual value measured in such a manner with a previously established target value and for generating, in dependence on the comparison, a setting command for actuation of the motor drive and thus of the tap changer in dependence on rotational direction, characterised in that the motor drive (13) also comprises means for comparison of the measured actual value with the previously established target value and for generation of the setting command dependent on the comparison and that a single electrical measurement line (12) leads directly from the measurement transducer to the motor drive (13).
Motor drive for automatic mains influencing, wherein an electric motor is provided in a common housing and actuates by way of an interposed transmission, a drive shaft which in turn drives a tap changer for uninterrupted switching over between different winding taps of a tapped transformer, characterised in that a control subassembly (17) is provided in the common housing and is disposed in connection by way of an interface subassembly (18) with a measurement line (12) of a measurement transducer disposed outside the housing, and that the control subassembly (17) comprises means in order to compare a measurement signal, which is generated by the measurement transducer and arrives by way of the measurement line (12), with a previously stored target value and to generate a regulating signal in dependence on the comparison and that the electric motor (16) is directly actuable by the control subassembly (17) in dependence on rotational direction.
Dependencies are inferred from the claim text.