Abstract: A busbar element for electrical installations, particularly placed in buildings or the like or for incorporation in wall elements of buildings or the like, consisting of a substantially U-shaped profiled section (1) whose lateral limbs (2) are optionally provided with fixing devices for a cover (5) for said busbar (S) element, optionally comprising a retaining profiled section which can be attached on the rear side thereof with an additional U-shaped profiled (K) section, also comprising connecting chambers, connecting recesses and/or connecting ribs for connection to busbar elements or intermediate parts.

Abstract: Apparatus and method for regulating electric voltage in at least one of electric supply networks and consumer units. The apparatus utilizes a regulating transformer, conducting a nominal current and positioned between a generator and at least one end consumer, including a regulating winding with a plurality of switchable partial windings. A transfer switch is arranged to contact tappings of the switchable partial windings. The regulating transformer includes a leakage gap such that, in the event of a short circuit between adjacent tappings of the switchable partial windings, the regulating winding has a high leakage impedance that limits a resultant ring current to an order of magnitude of the nominal current. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.