Siemens Aktiengesellschaft

Innomotics Gmbh

Siemens Energy Global Gmbh & Co. Kg

Michael Nagel

Jürgen Huber

Steffen Lang

Dieter Schirm

Peter Gröppel

Matthias Übler

Friedhelm Pohlmann

Mario Brockschmidt

Roland Röding

Torsten Rossow

Regina Mühlberg

Manuel Weil

Various embodiments of the teachings herein include a corona shielding tape for further processing to give an insulation system comprising an impregnated winding with potential control via outer corona shielding 'AGS' and/or internal potential controller “IPS” and/or terminal corona shielding “EGS”, the insulation system being producible by impregnating the winding with an anhydride-free and resin-based impregnating agent at 45-85° C. and under reduced pressure. The corona shielding tape may include: a carrier tape; an electrically conductive and/or partly conductive filler in a polymer matrix; and a tape accelerator suitable for curing and/or gelation of the impregnating agent. The polymer matrix contains at least one polyvinylalcohol and/or a polyvinylalcohol copolymer. The accelerator is selected from the group consisting of: superacids and superacid salts suitable for acceleration of a cationic homopolymerization of the resin-based anhydride-free impregnating agent.

Corona shielding strip for a high-voltage rotating electrical machine

An anhydride-free impregnating resin for an electrical insulation body, the impregnating resin has an epoxy resin, a curing agent and nanoscale and/or microscale inorganic particles. An impregnable electrical insulating tape for an electrical insulation body has a curing agent applied to the electrical insulating tape. A method includes producing an electrical insulation body An electrical insulation body includes an anhydride-free impregnating resin, where the impregnating resin has an epoxy resin, a curing agent and nanoscale and/or microscale inorganic particles.

Storage-stable impregnating resins and electrical insulating tapes

Growing community of inventors

Gremsdorf, Germany

Michael Nagel