Abstract: A blade for a fan that can be arranged on a rotor shaft of a rotor of a rotating electric machine, in particular a generator, wherein the blade is at least partially formed from a fiber composite material that has a polymer matrix with mineral fibers embedded therein. A method for producing a blade for a fan arrangeable on a rotor shaft of a rotor of a rotating electrical machine, in particular a generator, wherein the blade is produced using an injection molding method, and wherein a fiber composite material of a polymer matrix with mineral fibers embedded therein is used as injection molding material.

Abstract: Fewer insulation layers can be used by virtue of using hydrophobic electrically conductive materials around a main insulation around a conductive bar. There are several more layers of conductive and/or non-conductive material.

Abstract: An external corona shielding for a conductor bar of an electric machine, a main insulating layer sheath on the conductor bar. The shielding has a first ply, which sheaths the main insulating layer, and a second ply, which sheaths the first ply. Each ply is a conductive, impregnatable layer with a sliding layer, wherein the sliding layers of the two plies (20, 21) face one another. Each sliding layer has at least one cutout, wherein the two conductive layers are connected to one another through these cutouts with the aid of a permanently elastic, electrically conductive connection.

Abstract: An insulation system of an electrical conductive element of an electrical machine, having a number of insulation system layers including an inner potential control layer, a main insulation layer, an outer corona shielding layer, and an end corona shielding layer, each of the insulation system layers having a resin-impregnated tape material strip that is wound, with a plurality of windings, around the electrical conductive element in such a way that the windings are arranged with overlapping regions half overlapping long side regions of each tape material strip, wherein, at least one of the tape material strips is flattened at the long side regions thereof, in relation to the mid-region thereof.

Abstract: A compound having the structural formula R1CO2? R2CO2? Zn2+ used as a reaction accelerator for the copolymerisation of a mixture of a carboxylic acid anhydride and an oxirane, wherein R1 and R2 are a straight-chained or branched alkyl group independently of each other.

Abstract: An impregnating resin for an electrical insulation body includes a base resin, a filler having nanoscale particles, and a radically polymerizing reactive diluent. The impregnating resin includes a crosslinker for crosslinking the base resin and the reactive diluents. The base resin is an epoxy resin. An electrical insulation body includes the impregnating resin and a method produces the electrical insulation body by production of an impregnating resin having a base resin, a filler having nanosize particles and a free-radically polymerizing reactive diluent.

Abstract: Fewer insulation layers can be used by virtue of using hydrophobic electrically conductive materials around a main insulation around a conductive bar. There are several more layers of conductive and/or non-conductive material.

Abstract: High-voltage insulation systems are simplified and can have a thinner design by the use of an electrically conductive PTFE fabric, wherein the thermal conductivity is also improved.

Abstract: By using an electrically conductive PTFE fabric, high-voltage insulation systems are simplified and can be made thinner, also improving the thermal conductivity. The insulation material is in two layers, each with a hydrophobic and a hydrophobic region, and the hydrophobic regions of the layers are opposed.

Abstract: A corona shield material (22) for producing a corona shield protective layer (16, 17) for an electric machine (1). The corona shield material (22) contains an initially flowable matrix material (22) which can be cured in a curing reaction to form a solid. The corona shield material (22) further contains a photosensitive initiator (24) which can be transformed by electromagnetic radiation (25) into a reactive state triggering the curing reaction. The corona shield material (22) further contains at least one electrically conductive filler (25) in particulate form.

Abstract: The corona shield can be applied in electric machines in a faster manner by using radiation-cured materials.

Abstract: An external corona shielding for a conductor bar of an electric machine, a main insulating layer sheath on the conductor bar. The shielding has a first ply, which sheaths the main insulating layer, and a second ply, which sheaths the first ply. Each ply is a conductive, impregnatable layer with a sliding layer, wherein the sliding layers of the two plies (20, 21) face one another. Each sliding layer has at least one cutout, wherein the two conductive layers are connected to one another through these cutouts with the aid of a permanently elastic, electrically conductive connection.

Abstract: An electrical insulation material for a high-voltage rotary machine includes a base resin and a filler powder distributed as the sole filler in the base resin, the powder being formed of disc-like particles of aluminum oxide. An insulation paper for a high-voltage rotary machine includes the electrical insulation material. An insulation tape for a high-voltage rotary machine includes a carrier strip and a strip of insulation paper that is applied and attached to the carrier strip.

Abstract: Printed circuit boards are coated with nanoparticulate inorganic oxides. The coatings have increased partial discharge resistance.

Abstract: A composite is formed from at least one base material and at least one filler powder mixture dispersed in the base material. The filler powder mixture has a filler powder fraction and at least one further filler powder fraction. The filler powder fraction has an average powder particle diameter (D50) selected from the range from 1 ?m to 100 ?m and the total proportion of the filler powder mixture in the composite (degree of fill) is above 50% by weight. The further filler powder fraction has a further average powder particle diameter selected from the range from 1 nm to 50 nm and the proportion of the further filler powder fraction in the filler powder mixture is selected from the range from 0.1% by weight to 50% by weight. A high degree of fill can be achieved at a low viscosity in the presence of nanosize filler particles. The composite is particularly suitable as embedding composition (pourable resin system).