An isolator includes a first fluid-carrying member and a second fluid-carrying member spaced apart from the first fluid-carrying member; and a resistive, semi-conductive or non-conductive component located between the first and the second fluid-carrying member. The component is adapted to convey fluid flowing from the first fluid-carrying member to the second fluid-carrying member. The isolator further comprises a reinforcing composite encircling the first fluid-carrying member, the second fluid-carrying member and the component. The reinforcing composite comprises: first fibres extending at an angle of between 30 degrees and +30 degrees to a longitudinal axis (A-A) of the resistive, semi-conductive or non-conductive component; second fibres interwoven with the first fibres and extending around the first fluid-carrying member, the second fluid-carrying member and the component at an angle of between +60 degrees and +90 degrees and/or between 60 degrees and 90 degrees to the longitudinal axis (A-A); and a resin.

An isolator includes a first fluid-carrying member and a second fluid-carrying member spaced apart from the first fluid-carrying member; and a resistive, semi-conductive or non-conductive component located between the first and the second fluid-carrying member. The component is adapted to convey fluid flowing from the first fluid-carrying member to the second fluid-carrying member. The isolator further comprises a reinforcing composite encircling the first fluid-carrying member, the second fluid-carrying member and the component. The reinforcing composite comprises: first fibres extending at an angle of between 30 degrees and +30 degrees to a longitudinal axis (A-A) of the resistive, semi-conductive or non-conductive component; second fibres interwoven with the first fibres and extending around the first fluid-carrying member, the second fluid-carrying member and the component at an angle of between +60 degrees and +90 degrees and/or between 60 degrees and 90 degrees to the longitudinal axis (A-A); and a resin.

An electric generator including: a main generator, including a rotating portion having main field windings; a stationary portion having generator armature windings; and a woven insulator at least partially enclosing the main field windings of the rotating portion, the woven insulator being included of strips or fibers of a material woven together, wherein the woven insulator is permeable to a coolant in a liquid form.

The present disclosure relates to insulation. Teachings thereof may be embodied in a solid insulation material, especially in tape form, the use thereof in a vacuum impregnation process and to an insulation system produced therewith, and also an electrical machine comprising the insulation system, especially for the medium- and high-voltage sector, namely for medium- and high-voltage machines, especially rotating electrical machines in the medium- and high-voltage sector, and to semifinished products for electrical switchgear. For example a solid insulation material with an anhydride-free impregnating agent may include: a carrier; a barrier material; a curing catalyst; and a tape adhesive. The curing catalyst and the tape adhesive are inert toward one another but react under the conditions of a vacuum impregnation process if combined with an anhydride-free impregnating agent having gelation times of 1 h to 15 h at impregnation temperature. The tape adhesive is free of oxirane groups and includes at least two free hydroxyl groups.

Various embodiments may include a solid insulation material, e.g. in tape form, the use thereof in a vacuum impregnation process, and/or an insulation system produced therewith and also an electrical machine having the insulation system, for the medium- and high-voltage sector. Some examples include rotating electrical machines in the medium- and high-voltage sector and also semifinished products for electrical switchgear. The solid insulation material and the insulation system produced therewith are characterized in that it can be produced in an anhydride-free manner, wherein the curing catalyst is, for example, an adduct of a 1H-imidazole and/or 1H-imidazole derivative with a compound containing oxirane groups.

The present invention is a combination of a shape-memory alloy (SMA) element and a fiber sleeve. The SMA connects at each end to a support element, the support elements being moveable relative to each other. The fiber sleeve comprises an electrically insulating sleeve made of flexible fiber material, and is sized so that the sleeve surrounds at least a portion of the SMA element. When the SMA element is deformed upon heating or cooling, causing the support elements to move relative to each other, the fiber sleeve also deforms and continues to surround the portion of the SMA element, inhibiting the flow of electric current from the SMA element to its surroundings.

A bite-resistant cable includes at least one core cable and a cover layer surrounding the at least one core cable. The cover layer contains a peppery agent and an algefacient. The content of the peppery agent is between 0.5 wt % and 5 wt % of the total weight of the cover layer. The content of the algefacient is between 0.5 wt % and 5 wt % of the total weight of the cover layer. Therefore, the service life of the cable can be extended and a stable power supply can be provided.

A bite-resistant cable includes at least one core cable and a cover layer surrounding the at least one core cable. The cover layer contains a peppery agent and an algefacient. The content of the peppery agent is between 0.5 wt % and 5 wt % of the total weight of the cover layer. The content of the algefacient is between 0.5 wt % and 5 wt % of the total weight of the cover layer. Therefore, the service life of the cable can be extended and a stable power supply can be provided.

An electrical insulation tape for a high-voltage electrical machine, having a particle composite that can be impregnated, which has a plurality of platelet-shaped electrical insulation particles, and having first spacing particles, which are applied to the surface of the electrical insulation tape such that the porosity of the electrical insulation tape is higher in the region of the first spacing particles than in the region of the particle composite that can be impregnated.

An electrical insulation tape for a high-voltage electrical machine, having a particle composite that can be impregnated, which has a plurality of platelet-shaped electrical insulation particles, and having first spacing particles, which are applied to the surface of the electrical insulation tape such that the porosity of the electrical insulation tape is higher in the region of the first spacing particles than in the region of the particle composite that can be impregnated.