Abstract:
Sistema de aislamiento eléctrico de alta tensión, útil como un aislamiento para alta tensión para uso en exterior, que contiene un material de carga o una mezcla de materiales de carga y opcionalmente aditivos adicionales, caracterizado por que dicho sistema de aislamiento eléctrico comprende poli(diciclopentadieno) como el componente principal y en el que dicho material de carga mineral o dicha mezcla de materiales de carga tiene un tamaño de grano medio (al menos el 50% de los granos) en el intervalo de 1,0 µm a 200 µm y está presente en una cantidad dentro del intervalo del 5% al 85% en peso, calculado respecto al peso total del sistema de aislamiento.
Abstract:
Electrical insulation system, which optionally contains a filler material and/or further additives, wherein said electrical insulation system comprises poly(dicyclopentadiene) as the main component, and method of making said electrical insulation system.
Abstract:
The invention relates to a nonlinear field control tape containing ZnO microvaristor particles. The doped ZnO particles are produced by crushing a sintered ZnO block, by desagglomeration or crushing of calcinated granulated particles, or by crushing of a calcined or sintered tape (tape casting). Embodiments, among other things, relate to: hollow ZnO microvaristor particles produced by granulation technique, having reduced average density and having diameters in a range well below 90 µm; and compounding the ZnO filler in binders that are used to impregnate tapes. Compared to nonlinear field control tapes with conventional embedded nonlinear filler particles, a stronger and more reliable nonlinear resistivity is achieved and the ZnO filler is simpler to produce and to compound in the binder. The resulting tapes are flexible, preferably self-adhesive and have a strong nonlinear electrical resistivity. The tapes are useful to protect high field-stress regions in electrical components.