Abstract: A method for electrically predrying a moist blank of a ceramic raw mixture is provided, the blank being connected into a circuit and an alternating current being passed through the blank. In this case, the alternating current is passed through the blank at an increased frequency in comparison with the mains frequency. Significantly less electrical energy is required to achieve an identical drying result.

Abstract: Disclosed is a composite insulator (1) having a core (2), in particular made of a fiber-reinforced duromer, and a protective layer (8) which surrounds the core (2) and is made in particular of an insulating elastomer. In some sections, especially on the bottom side of screens (4), the protective layer (8) specifically includes particles (7) that influence the field of the insulator (1).

Abstract: A method for electrically predrying a moist blank of a ceramic raw mixture is provided, the blank being connected into a circuit and an alternating current being passed through the blank. In this case, the alternating current is passed through the blank at an increased frequency in comparison with the mains frequency. Significantly less electrical energy is required to achieve an identical drying result.

Abstract: The invention relates to a long-distance line for high voltage, having an outer jacket pipe extending in a longitudinal direction, having an inner conductor led in the interior of the jacket pipe in parallel to the longitudinal direction, and having a number of mounting insulators, by means of which the inner conductor is held on the jacket pipe at a distance therefrom transverse to the longitudinal direction, and a correspondingly embodied mounting insulator. The mounting insulators serve for adjusting the distance between the inner conductor and the jacket pipe. The long-distance transmission line is particularly air insulated in design. The mounting insulators allow simple assembly and installation of the inner conductor.

Abstract: A field-controlled composite insulator uses materials which are greatly stressed by an inhomogeneous distribution of an electrical field across a surface thereof. One of the causes thereof is the structural configuration of the insulator. The field strength changes particularly in a region of fittings due to a transition from insulating materials of sheds and an insulator core to a metal material, due to a transition from ground potential at cross members or to a conductor potential at that location, where conductor cables are attached. A further cause is deposits of dirt, which stress an insulator overall. A field control layer is therefore disposed between the core and the protective layer in at least one section of the insulator. The control layer includes particles as a filler, which influence the electrical field of the insulator. A method for producing the composite insulator is also provided.

Abstract: A holding device has a supporting frame with at least two carrying legs at the respective ends of which is arranged a holding element for accommodating a conductor wire. A holding insulator extends in a longitudinal direction which is mounted between the carrying legs of the supporting frame and which has a free end for fixing to a mast crossbeam. The supporting frame is sized in such a way that the carrying legs extend in the longitudinal direction beyond the free end of the holding insulator. Furthermore, an overhead line configuration has such a specified holding device. With this device, masts which are configured for low rated voltages to be made accessible for carrying conductor wires at high rated voltages.

Abstract: Disclosed is a composite insulator (1) having a core (2), in particular made of a fiber-reinforced duromer, and a protective layer (8) which surrounds the core (2) and is made in particular of an insulating elastomer. In some sections, especially on the bottom side of screens (4), the protective layer (8) specifically includes particles (7) that influence the field of the insulator (1).

Abstract: The invention relates to a long-distance line for high voltage, having an outer jacket pipe extending in a longitudinal direction, having an inner conductor led in the interior of the jacket pipe in parallel to the longitudinal direction, and having a number of mounting insulators, by means of which the inner conductor is held on the jacket pipe at a distance therefrom transverse to the longitudinal direction, and a correspondingly embodied mounting insulator. The mounting insulators serve for adjusting the distance between the inner conductor and the jacket pipe. The long-distance transmission line is particularly air insulated in design. The mounting insulators allow simple assembly and installation of the inner conductor.

Abstract: A field-controlled composite insulator uses materials which are greatly stressed by an inhomogeneous distribution of an electrical field across a surface thereof. One of the causes thereof is the structural configuration of the insulator. The field strength changes particularly in a region of fittings due to a transition from insulating materials of sheds and an insulator core to a metal material, due to a transition from ground potential at cross members or to a conductor potential at that location, where conductor cables are attached. A further cause is deposits of dirt, which stress an insulator overall. A field control layer is therefore disposed between the core and the protective layer in at least one section of the insulator. The control layer includes particles as a filler, which influence the electrical field of the insulator. A method for producing the composite insulator is also provided.

Abstract: A holding device has a supporting frame with at least two carrying legs at the respective ends of which is arranged a holding element for accommodating a conductor wire. A holding insulator extends in a longitudinal direction which is mounted between the carrying legs of the supporting frame and which has a free end for fixing to a mast crossbeam. The supporting frame is sized in such a way that the carrying legs extend in the longitudinal direction beyond the free end of the holding insulator. Furthermore, an overhead line configuration has such a specified holding device. With this device, masts which are configured for low rated voltages to be made accessible for carrying conductor wires at high rated voltages.

Abstract: The invention relates to the production of composite insulators consisting of a shank in the form of a bar or a tube, which is provided with a covering and which comprises plate-like screens which are distanced from each other. The covering and the screens are made of an elastomer material with high insulating qualities. As a result, the number, distance, form and size of the screens can vary from insulator to insulator. According to the invention, at least one injection mould (10a, 10b, 11a, 11b, 12a, 12b, 13a, 13b) for injecting a screen (2, 3, 4, 5, 19, 20, 21, 22) is arranged downstream from a device which is used to provide the shank (1) with a covering. The injection mould can be advanced in order to inject a screen upon the shank and opened in order to unmould said screen. An advancing device is also provided in order to displace (16) the shank (1) or the screen mould.